Networking Calculators
IP addressing, subnets, bandwidth, wireless, fiber, security and cloud networking tools.
552 of 552 available now
Cloud Networking
Cloud Networking hub →- AWS VPC CIDRPlan AWS VPC and subnet CIDR blocks accounting for AWS-reserved addresses.
- Azure VNetPlan Azure virtual network and subnet address ranges accounting for Azure-reserved addresses.
- GCP VPCPlan Google Cloud VPC subnet ranges and calculate usable IP addresses per subnet.
- Load Balancer DistributionCalculate how traffic is distributed across backend targets by a load balancer.
- NAT Gateway CapacityEstimate NAT gateway connection and bandwidth capacity for outbound cloud traffic.
- Public IP PlannerPlan and allocate public IP address requirements across cloud resources.
- Private IP PlannerPlan private IP address space allocation across VPCs and subnets.
- VPN Tunnel CapacityCalculate throughput capacity and tunnel count limits for site-to-site VPN connections.
- Transit Gateway PlannerPlan transit gateway attachments, routing and bandwidth across connected VPCs.
- Cloud Network CostEstimate cloud networking costs from data transfer, NAT gateway and load balancer usage.
DNS & Network Services
All 17 DNS & Network Services calculators →- DNS Cache CalculatorSize a resolver cache and predict its hit ratio from query rate, unique names and record TTL.
- DNS Zone Size CalculatorEstimate zone file size, server memory and zone transfer time from your record counts and DNSSEC state.
- DNS Query Rate CalculatorTurn user population into average and peak DNS query rates and the number of resolvers required.
- DHCP Lease CalculatorWork out DHCP T1 and T2 renewal timers and the renewal load a client population puts on the server.
- DHCP Pool Capacity CalculatorCheck whether a DHCP pool has enough addresses once lease overhang and growth headroom are included.
- NTP Drift CalculatorConvert clock drift in ppm into error per poll interval, per day and across a holdover window.
- SNMP Polling CalculatorSize SNMP polling load: varbinds per second, PDUs per cycle, bandwidth and daily data points.
- Syslog Growth CalculatorProject syslog volume and retained storage from device count, message rate, size and compression.
- NetFlow Storage CalculatorSize NetFlow collector storage and export bandwidth from flow rate, sampling and retention.
- IPFIX Storage CalculatorSize IPFIX collector storage from template field counts, flow rate, retention and compression.
- RADIUS Capacity CalculatorSize RADIUS servers from authentication rate, interim accounting load and peak-to-average factor.
- TACACS+ Session CalculatorEstimate TACACS+ request volume from device count, admin sessions and per-command authorisation.
Data Center
All 34 Data Center calculators →- Rack CapacityCalculate available rack unit space and equipment capacity for a server rack.
- Rack PowerCalculate total power draw and headroom for equipment installed in a server rack.
- Rack CoolingCalculate cooling capacity required to dissipate heat load from a server rack.
- Cable Length DCCalculate structured cabling length requirements between racks in a data center.
- UPS RuntimeCalculate how long a UPS battery will sustain a given load before depletion.
- PDU LoadCalculate power distribution unit load and remaining capacity across connected circuits.
- Power Usage EffectivenessCalculate PUE, the ratio of total facility power to IT equipment power, for a data center.
- CRAC CapacityCalculate required CRAC unit cooling capacity for a data center's total heat load.
- Generator RuntimeCalculate how long a backup generator will run on available fuel at a given load.
- Data Center EfficiencyCalculate overall data center energy efficiency combining power, cooling and IT load metrics.
- Leaf-Spine Capacity CalculatorSize a leaf-spine fabric: total fabric bandwidth, per-leaf uplink capacity and the resulting oversubscription.
- Oversubscription Ratio CalculatorCompare access bandwidth with uplink bandwidth to get the oversubscription ratio and the uplinks a target needs.
Data Transfer
Data Transfer hub →- File Transfer TimeEstimate how long a file transfer will take at a given connection speed.
- Download TimeCalculate how long a download will take based on file size and internet speed.
- Upload TimeCalculate how long an upload will take based on file size and upload speed.
- Internet Speed CalculatorConvert internet speed between Mbps, MB/s and GB/hour and estimate transfer times.
- Data Usage CalculatorEstimate data consumption for browsing, streaming and downloads over a period.
- Monthly Bandwidth UsageProject total monthly bandwidth consumption from daily usage patterns.
- Peak Bandwidth CalculatorEstimate peak bandwidth demand from concurrent users and per-user usage.
- Average ThroughputCalculate the average data throughput over a transfer session or time window.
- Compression RatioCalculate the compression ratio and space savings between original and compressed data sizes.
- Network UtilizationCalculate the percentage of available link capacity currently in use.
Enterprise Networking
All 36 Enterprise Networking calculators →- Switch Port CapacityCalculate switch port capacity requirements and oversubscription ratios.
- Core Network CapacityCalculate aggregate bandwidth requirements for a network core given distribution layer demand.
- Branch BandwidthCalculate required WAN bandwidth for a branch office based on users and application mix.
- WAN OptimizationEstimate effective WAN throughput gains from compression, caching and deduplication.
- MPLS CostEstimate MPLS circuit costs across sites based on bandwidth and location count.
- SDN CapacityCalculate flow table and controller capacity requirements for a software-defined network.
- VXLAN CalculatorCalculate VXLAN encapsulation overhead and VNI address space.
- GRE TunnelCalculate GRE tunnel encapsulation overhead and effective payload MTU.
- IPsec TunnelCalculate IPsec tunnel overhead and effective throughput for encrypted traffic.
- Network AvailabilityCalculate network uptime percentage and allowed downtime from SLA availability targets.
- Autoscaling CapacityFree Autoscaling Capacity calculator with clear step-by-step results.
- Backup RetentionFree Backup Retention calculator with clear step-by-step results.
Ethernet & Switching
All 26 Ethernet & Switching calculators →- VLAN CalculatorPlan VLAN IDs, subnets and trunking assignments across switches.
- Trunk BandwidthCalculate the aggregate and per-VLAN bandwidth carried on an Ethernet trunk link.
- STP CostCalculate Spanning Tree Protocol port cost based on link speed and STP version.
- MAC Address ConverterConvert MAC addresses between colon, hyphen, dot and raw hex notations.
- MAC Vendor LookupIdentify the hardware vendor associated with a MAC address OUI prefix.
- Jumbo Frame CalculatorCalculate throughput and overhead gains from enabling jumbo frames on a link.
- MTU CalculatorCalculate the optimal maximum transmission unit for a network path.
- MSS CalculatorCalculate TCP maximum segment size from MTU and header overhead.
- Ethernet OverheadCalculate Ethernet framing overhead and its impact on effective throughput.
- Frame Size CalculatorCalculate total Ethernet frame size including headers, payload and trailer.
- Frame Check Sequence CalculatorSize the 4-byte Ethernet FCS, count the bits it protects and estimate how many corrupt frames slip past CRC-32.
- Ethernet Throughput CalculatorTurn a line rate into real frame rate, Layer 2 throughput and TCP goodput after preamble, IFG, headers and FCS.
Fiber & Telecom
Fiber & Telecom hub →- Fiber Loss BudgetCalculate total optical fiber loss budget from distance, splices and connectors.
- Optical BudgetCalculate the available optical power budget between transmitter and receiver.
- dBm to WattConvert optical or RF power between dBm and watts (or milliwatts).
- Optical PowerCalculate received optical power at a fiber receiver given transmit power and losses.
- Cable LengthCalculate maximum cable run length for a given medium and signal loss tolerance.
- OTDR DistanceCalculate fiber fault distance from OTDR trace timing and the fiber's refractive index.
- RF Link BudgetCalculate the complete radio frequency link budget including all gains and losses.
- Microwave LinkCalculate microwave point-to-point link feasibility from frequency, distance and antenna specs.
- Tower CoverageEstimate cell tower coverage radius from antenna height, power and terrain factors.
- Antenna GainCalculate antenna gain in dBi from aperture size, frequency and efficiency.
Home Networking & Smart Home
All 54 Home Networking & Smart Home calculators →- Router Power Cost CalculatorWork out what leaving a router, modem and switch powered around the clock adds to your electricity bill each month and year.
- Smart Plug Energy Cost CalculatorTurn a smart plug power reading into daily energy use and the monthly and annual cost of whatever is plugged into it.
- Smart Home Energy Savings CalculatorCheck whether smart thermostats, plugs and lighting pay for themselves, and how long the payback period actually is.
- Home Network Power CalculatorAdd up the continuous power draw of every always-on network device in the house and price the annual electricity it uses.
- Home Network Bandwidth CalculatorSize the internet connection a household needs from the number of simultaneous activities and the bitrate each one consumes.
- Streaming Bandwidth CalculatorCalculate the bandwidth and monthly data a set of concurrent video streams needs at a given quality level.
- 4K Streaming Bandwidth CalculatorSize a connection for 4K UHD streaming, which needs roughly 25 Mbps per stream once protocol overhead is included.
- 8K Streaming Bandwidth CalculatorWork out the bandwidth and data volume 8K streaming demands, typically 80 to 100 Mbps for a single stream.
- Gaming Bandwidth CalculatorEstimate the upload and download bandwidth online gaming consumes, and the monthly data a regular gaming habit uses.
- Video Call Bandwidth CalculatorSize bandwidth for simultaneous video calls, allowing for the symmetric upload that conferencing needs.
- Zoom Bandwidth CalculatorCalculate the bandwidth a set of concurrent Zoom-style HD meetings requires, plus the monthly data it consumes.
- Home Server Bandwidth CalculatorSize the upstream bandwidth a home server or self-hosted service needs to serve its expected concurrent clients.
IP Addressing
All 25 IP Addressing calculators →- IPv4 CalculatorCalculate network address, broadcast address, host range and subnet mask for any IPv4 address.
- IPv6 CalculatorExpand, compress and analyze IPv6 addresses including prefix and interface identifier breakdown.
- CIDR CalculatorConvert CIDR notation into network address, subnet mask, broadcast address and usable host count.
- Subnet CalculatorDivide an IP network into subnets and view addressing details for each resulting subnet.
- VLSM CalculatorAllocate variable-length subnets efficiently across a network based on per-subnet host requirements.
- FLSM CalculatorSplit a network into equal-sized fixed-length subnets and list each subnet's address range.
- Supernet CalculatorAggregate multiple contiguous networks into a single supernet with the smallest matching prefix.
- Broadcast Address CalculatorFind the broadcast address of a network from its IP address and subnet mask.
- Network Address CalculatorDetermine the network address of a subnet from an IP address and mask or prefix length.
- First Host CalculatorFind the first usable host address in an IP subnet.
- Last Host CalculatorFind the last usable host address in an IP subnet.
- Host Count CalculatorCalculate the number of usable host addresses available in a subnet.
IP Addressing & Subnetting
All 29 IP Addressing & Subnetting calculators →- Usable Hosts In A Subnet CalculatorWork out usable hosts in a subnet instantly with clear inputs, formula shown and shareable results.
- Network And Broadcast Address CalculatorWork out network and broadcast address instantly with clear inputs, formula shown and shareable results.
- First And Last Usable IP CalculatorWork out first and last usable ip instantly with clear inputs, formula shown and shareable results.
- Subnet Split (VLSM) CalculatorWork out subnet split (vlsm) instantly with clear inputs, formula shown and shareable results.
- Supernet Aggregation CalculatorWork out supernet aggregation instantly with clear inputs, formula shown and shareable results.
- Route Summarisation CalculatorWork out route summarisation instantly with clear inputs, formula shown and shareable results.
- IP Range To CIDR CalculatorWork out ip range to cidr instantly with clear inputs, formula shown and shareable results.
- IP Address Class CalculatorWork out ip address class instantly with clear inputs, formula shown and shareable results.
- Private vs Public IP CalculatorWork out private vs public ip instantly with clear inputs, formula shown and shareable results.
- Reserved IP Range Checker CalculatorWork out reserved ip range checker instantly with clear inputs, formula shown and shareable results.
- IP To Hexadecimal CalculatorWork out ip to hexadecimal instantly with clear inputs, formula shown and shareable results.
- IPv6 EUI 64 CalculatorWork out ipv6 eui 64 instantly with clear inputs, formula shown and shareable results.
- IPv6 Prefix CalculatorBreak an IPv6 prefix into its network portion, available subnet count and address capacity.
- IPv6 Address Compression CalculatorCompress a full IPv6 address to its shortest RFC 5952 form and see exactly how many characters are saved.
- IPv6 Expansion CalculatorExpand a compressed IPv6 address into all eight 16-bit groups with leading zeros restored.
- IPv6 Network CalculatorDerive the IPv6 network address, prefix boundary and subnet identifier for any address and prefix length.
- IPv6 Host Range CalculatorShow the first and last address inside an IPv6 prefix along with the size of the address space it covers.
- IPv6 Prefix Length CalculatorChoose the right IPv6 prefix length for a required number of subnets and see how much headroom is left.
- IPv6 Interface ID CalculatorSplit an IPv6 address into its network prefix and 64-bit interface identifier, with the identifier type flagged.
- EUI-64 CalculatorConvert a 48-bit MAC address into its modified EUI-64 interface identifier and the resulting IPv6 address.
- IPv6 Binary ConverterConvert an IPv6 address into its full 128-bit binary form, group by group, with the prefix boundary marked.
- IPv6 Hex ConverterTurn an IPv6 address into a bare 32-digit hex string, 0x literal and reverse-DNS nibble format.
- IPv6 Multicast CalculatorBuild an IPv6 multicast address from a scope and group ID, and decode what the flag and scope fields mean.
- IPv6 Anycast CalculatorPlan IPv6 anycast service addresses across sites and estimate the routing spread each instance serves.
Load Balancing & ADC
All 20 Load Balancing & ADC calculators →- Load Balancer Capacity CalculatorSize a load balancer pair from connection arrival rate and hold time, and check the state table against the per-node limit.
- Round Robin Distribution CalculatorShow exactly how round-robin splits requests across a pool, including the remainder servers and the resulting per-server load.
- Least Connections CalculatorModel how least-connections balancing shifts new requests away from slow servers, and the arrival rate each member ends up with.
- Weighted Load Distribution CalculatorTurn pool member weights into request shares, per-pool request counts and the weighted round-robin cycle length.
- Session Persistence CalculatorSize the persistence table for sticky sessions: concurrent sessions, memory footprint and how long a node takes to drain.
- SSL Offload Capacity CalculatorSize SSL/TLS offload cores separately for asymmetric handshakes and symmetric bulk encryption, including session resumption.
- TLS Handshake Rate CalculatorCalculate sustainable TLS handshake rate from core count, key algorithm and resumption rate, plus the round trips setup costs.
- Reverse Proxy Throughput CalculatorEstimate reverse-proxy throughput, worker CPU utilisation and maximum request rate, with the TLS termination penalty included.
- NGINX Capacity CalculatorDerive NGINX connection capacity from worker processes and worker_connections, and the proxy buffer memory it commits.
- HAProxy Capacity CalculatorFind whether HAProxy is limited by frontend maxconn or backend server maxconn, and how long sessions wait in the queue.
- Application Gateway CalculatorSize a cloud application gateway in capacity units from throughput, new connections and persistent connections, with a WAF uplift.
- WebSocket Capacity CalculatorSize WebSocket fan-out: servers required, message rate, bandwidth and the memory each long-lived connection pins.
Miscellaneous
Miscellaneous hub →- DHCP ScopePlan a DHCP address pool scope and calculate available leases within a subnet.
- DNS TTLCalculate DNS record cache expiration and propagation timing from TTL values.
- DNS PropagationEstimate how long a DNS change will take to fully propagate based on TTL and resolver caching.
- Port RangeCalculate the number of ports and validate ranges within TCP/UDP port allocations.
- Socket CalculatorCalculate maximum concurrent socket connections a server can support.
- QoS QueueCalculate queue depth and bandwidth allocation for QoS traffic classes.
- MPLS LabelCalculate MPLS label stack overhead and effective MTU for labeled traffic.
- SD-WAN CapacityCalculate aggregate SD-WAN throughput capacity across multiple underlay links.
- CDN CapacityEstimate CDN edge server capacity needed to serve peak content delivery traffic.
- Proxy CapacityEstimate the number of concurrent connections a proxy server can handle.
Network Operations
All 24 Network Operations calculators →- IP Address Capacity PlannerPlan an IP allocation: addresses needed today and after growth, the CIDR prefix that fits and the waste it leaves.
- Network Growth Forecast CalculatorCompound current traffic by a growth rate to forecast future load and the year the link runs out of capacity.
- Fiber Utilization CalculatorMeasure how much of a fiber plant is lit: strands in use, wavelengths per pair, spare capacity and dark-fiber headroom.
- Redundancy Calculator (N+1, N+2)Size an N+1 or N+2 cluster: units required, spare capacity, per-unit load after a failure and the cost of redundancy.
- Network MTBF CalculatorCompute mean time between failures for a device or a serial chain of devices, with the failure rate and annual failure count.
- Network MTTR CalculatorBreak mean time to repair into detect, dispatch, travel, diagnose and fix phases, and see which phase dominates.
- SLA Availability CalculatorConvert MTBF and MTTR into availability, the nines it earns and the downtime allowed per year, month and week.
- Network SLO Compliance CalculatorCompare measured availability against an SLO and see the compliance margin plus how much downtime is left in the period.
- Network Error Budget CalculatorTurn an SLO into a concrete error budget in minutes and failed requests, and track the burn rate against it.
- Maintenance Window CalculatorPlan a change window: task time, rollback reserve, verification and whether it fits before the impact deadline.
- Network Upgrade Time CalculatorEstimate a fleet software upgrade: image transfer, reload time, per-device duration and total elapsed campaign time.
- Change Impact CalculatorScore a network change's risk from blast radius, rollback feasibility, testing and timing, then get a recommended approval path.
Network Performance
Network Performance hub →- Bandwidth CalculatorCalculate required or available network bandwidth from data size and time.
- Throughput CalculatorMeasure effective network throughput after accounting for overhead and loss.
- Packet Loss CalculatorCalculate the packet loss percentage from sent and received packet counts.
- Latency CalculatorEstimate one-way network latency from distance, medium and processing delay.
- RTT CalculatorCalculate round-trip time between two network endpoints.
- Jitter CalculatorCalculate network jitter as the variation in packet delay across a sample.
- Network Delay CalculatorBreak down total network delay into propagation, transmission, processing and queuing delay.
- Congestion CalculatorEstimate network congestion level from link utilization and traffic load.
- Network Efficiency CalculatorCalculate the ratio of useful data throughput to total bandwidth consumed.
- Goodput CalculatorCalculate goodput — the application-level useful data rate excluding retransmissions and overhead.
- Network Performance Health Score CalculatorScore latency, jitter, loss, utilisation and availability into one weighted network health grade.
Network Performance & Design
All 75 Network Performance & Design calculators →- Bandwidth For Users CalculatorWork out bandwidth for users instantly with clear inputs, formula shown and shareable results.
- TCP Throughput From Latency CalculatorWork out tcp throughput from latency instantly with clear inputs, formula shown and shareable results.
- Round Trip Time Estimate CalculatorWork out round trip time estimate instantly with clear inputs, formula shown and shareable results.
- Jitter Budget CalculatorWork out jitter budget instantly with clear inputs, formula shown and shareable results.
- MTU And MSS CalculatorWork out mtu and mss instantly with clear inputs, formula shown and shareable results.
- Fragmentation Overhead CalculatorWork out fragmentation overhead instantly with clear inputs, formula shown and shareable results.
- Protocol Overhead CalculatorWork out protocol overhead instantly with clear inputs, formula shown and shareable results.
- Header Overhead Percentage CalculatorWork out header overhead percentage instantly with clear inputs, formula shown and shareable results.
- Backup Window Bandwidth CalculatorWork out backup window bandwidth instantly with clear inputs, formula shown and shareable results.
- Video Streaming Bandwidth CalculatorWork out video streaming bandwidth instantly with clear inputs, formula shown and shareable results.
- Video Bitrate CalculatorWork out video bitrate instantly with clear inputs, formula shown and shareable results.
- Audio Bitrate And Size CalculatorWork out audio bitrate and size instantly with clear inputs, formula shown and shareable results.
Network Storage
Network Storage hub →- SAN CapacityCalculate usable storage area network capacity after RAID overhead and reserved space.
- NAS CapacityCalculate usable network-attached storage capacity across drives and RAID configuration.
- RAID CapacityCalculate usable capacity across RAID 0, 1, 5, 6 and 10 configurations.
- RAID PerformanceEstimate read/write performance for different RAID levels and drive counts.
- IOPS CalculatorCalculate storage IOPS from throughput, block size and access pattern.
- Disk ThroughputCalculate sequential disk throughput from IOPS and block size.
- Backup WindowCalculate how long a backup job will take given data size and transfer rate.
- Replication TimeCalculate the time required to replicate data across storage nodes or sites.
- Snapshot SizeEstimate storage snapshot size based on change rate and retention period.
- Storage GrowthProject future storage capacity needs based on current usage and growth rate.
Routing
All 30 Routing calculators →- BGP Prefix CalculatorCalculate the number of BGP prefixes and routing table impact for an address block.
- Route SummarizationSummarize multiple contiguous routes into the smallest covering supernet.
- OSPF CostCalculate OSPF interface cost from link bandwidth using the reference bandwidth formula.
- RIP MetricCalculate the RIP hop-count metric for a route and check it against the maximum hop limit.
- EIGRP MetricCalculate the composite EIGRP metric from bandwidth, delay, reliability and load.
- ECMP DistributionCalculate how traffic is load-balanced across equal-cost multi-path routes.
- Next Hop CalculatorDetermine the next-hop gateway for a destination based on the routing table entries.
- Routing Table SizeEstimate memory and entry requirements for a routing table given prefix counts.
- Administrative DistanceCompare administrative distances across routing protocols to determine the preferred route.
- Longest Prefix MatchDetermine which routing table entry wins for a destination using longest prefix match.
- Static Route CalculatorBuild a static route from a destination and prefix, and see whether its administrative distance beats the dynamic protocol.
- Route Lookup CalculatorRun longest prefix match over four candidate routes and see exactly which one forwards a given destination.
Security
Security hub →- Password EntropyCalculate password entropy in bits based on length and character set.
- Password StrengthEvaluate password strength and estimated crack time based on complexity.
- Hash RateCalculate hashing throughput and time required to compute a given number of hashes.
- Encryption OverheadCalculate the bandwidth and latency overhead added by encrypting network traffic.
- VPN OverheadCalculate the effective throughput loss caused by VPN tunneling and encryption overhead.
- Firewall Rule EstimatorEstimate the number of firewall rules needed to cover a matrix of sources, destinations and services.
- TLS OverheadCalculate the latency and bandwidth overhead introduced by TLS handshakes and encryption.
- SSL Certificate ExpiryCalculate the days remaining until an SSL/TLS certificate expires.
- Key Length ComparisonCompare cryptographic key lengths across algorithms for equivalent security strength.
- Brute Force TimeEstimate the time required to brute-force a password or key given attempt speed.
TCP & Transport
All 16 TCP & Transport calculators →- TCP Window Size CalculatorSize the TCP receive window for a given bandwidth and RTT, and find the window scale factor it needs.
- TCP Retransmission CalculatorApply the Mathis equation to see the throughput ceiling packet loss imposes on a single TCP stream.
- TCP Slow Start CalculatorTrack how the congestion window doubles each round trip during slow start and when it reaches ssthresh.
- Congestion Window CalculatorModel the AIMD sawtooth: how far cwnd drops on loss and how many round trips recovery takes.
- Bandwidth Delay Product CalculatorCompute the bandwidth-delay product: how many bytes are in flight on a link at any instant.
- Socket Buffer CalculatorSize per-socket send and receive buffers from the BDP, and total the kernel memory a server needs.
- Connection Capacity CalculatorFind how many TCP connections a host can hold and whether memory, ports or the table is the limit.
- Session Capacity CalculatorUse Little's law to turn a new-session rate and session lifetime into a firewall session table size.
- Connection Timeout CalculatorDerive the RFC 6298 retransmission timeout and the total time TCP spends retrying before it gives up.
- SYN Flood Capacity CalculatorSee how fast a SYN flood exhausts the backlog queue and whether SYN cookies are required.
- Packets Per Second CalculatorConvert a bit rate into packets per second for a given frame size, including preamble and interframe gap.
- Flow Count CalculatorEstimate active flows and flow-cache utilisation from host count, flow rate and average flow duration.
Telecom
All 30 Telecom calculators →- Erlang BCalculate call blocking probability and required trunk lines using the Erlang B formula.
- Erlang CCalculate call center agent staffing and wait probability using the Erlang C formula.
- Busy Hour TrafficCalculate busy hour call traffic in Erlangs from call volume and duration.
- Call BlockingCalculate the probability of call blocking for a given number of trunks and traffic load.
- Call CapacityCalculate maximum simultaneous call capacity for a given trunk or bandwidth allocation.
- SMS CapacityCalculate SMS throughput capacity for a messaging gateway or SMPP connection.
- Voice Codec BandwidthCalculate bandwidth consumption per call for common VoIP codecs including overhead.
- SIP ChannelCalculate the number of concurrent SIP channels supported by available bandwidth.
- SS7 Link CapacityCalculate signaling capacity of an SS7 link based on link speed and message size.
- Diameter CapacityCalculate Diameter signaling transaction capacity for a given link and message rate.
- SIP Trunk Capacity CalculatorSize a SIP trunk from busy-hour call attempts and hold time: Erlangs, concurrent channels and the bandwidth they consume.
- RTP Bandwidth CalculatorCompute true on-the-wire RTP bandwidth per call including RTP, UDP, IP and layer-2 framing overhead.
VPN & SD-WAN
All 19 VPN & SD-WAN calculators →- VPN Bandwidth CalculatorSize the WAN circuit a remote-access or site-to-site VPN needs once encryption and encapsulation overhead is added.
- Geneve Overhead CalculatorWork out Geneve encapsulation bytes, the resulting inner MTU and the goodput lost to option TLVs.
- WireGuard Throughput CalculatorEstimate WireGuard tunnel throughput from link rate, packet size and per-core crypto performance.
- OpenVPN Performance CalculatorEstimate OpenVPN tunnel throughput and MTU from cipher choice, transport protocol and instance count.
- SD-WAN Link CalculatorSize the SD-WAN circuit for a branch from user count, concurrency, growth and overlay overhead.
- SD-WAN Path Selection CalculatorScore two SD-WAN paths on latency, jitter and loss to see which one the policy engine should prefer.
- Deduplication Savings CalculatorCalculate the data reduction, bandwidth saved and transfer time cut by WAN deduplication and compression.
- QoS Bandwidth Allocation CalculatorSplit a link into voice, video, business and best-effort classes and check the 33% low-latency queue guideline.
- Traffic Shaping CalculatorCompute token-bucket shaper parameters — committed burst, excess burst and interval — from CIR and Tc.
- Traffic Policing CalculatorSplit offered traffic into conforming, exceeding and violating rates for a two-rate three-colour policer.
- Packet Scheduling CalculatorTurn scheduler weights into a real bandwidth share and estimate serialisation and queueing delay per class.
- WAN Failover CalculatorAdd up BFD detection, routing convergence and application recovery to get real WAN failover time and downtime.
Wireless
All 27 Wireless calculators →- WiFi CoverageEstimate WiFi access point coverage radius and area based on power and environment.
- WiFi CapacityCalculate the number of concurrent devices a WiFi network can support at target throughput.
- WiFi Channel CalculatorFind non-overlapping WiFi channels and center frequencies for 2.4GHz and 5GHz bands.
- Signal StrengthCalculate received wireless signal strength from transmit power, distance and path loss.
- RSSI CalculatorConvert between RSSI dBm values and signal quality percentage for wireless links.
- SNR CalculatorCalculate the signal-to-noise ratio from signal and noise power levels.
- Wireless Link BudgetCalculate the complete link budget for a wireless link including gains and losses.
- Access Point PlanningCalculate the number of access points needed to cover an area with target capacity.
- Frequency ConverterConvert radio frequencies between Hz, kHz, MHz and GHz and calculate wavelength.
- Fresnel ZoneCalculate the Fresnel zone radius and clearance needed for a line-of-sight wireless link.
- Access Point Density CalculatorSize an access point count from both coverage area and client capacity, and see which of the two actually drives the design.
- Channel Width CalculatorTrade Wi-Fi channel width against PHY rate, noise-floor penalty and how many non-overlapping channels remain for reuse.