VPN & SD-WAN Calculators

19 free vpn & sd-wan calculators in Networking.

Deduplication Savings CalculatorCalculate the data reduction, bandwidth saved and transfer time cut by WAN deduplication and compression.
Encapsulation Overhead CalculatorStack VLAN tags, GRE, VXLAN and IPsec to see total per-packet overhead, goodput and remaining MTU.
Geneve Overhead CalculatorWork out Geneve encapsulation bytes, the resulting inner MTU and the goodput lost to option TLVs.
Internet Breakout CalculatorCompare local internet breakout with hub backhaul to see the bandwidth saved at the data centre edge.
Multi-WAN Capacity CalculatorAggregate up to three WAN circuits and check the capacity that survives the loss of the largest link.
OpenVPN Performance CalculatorEstimate OpenVPN tunnel throughput and MTU from cipher choice, transport protocol and instance count.
Overlay Network CalculatorCount tunnels in a mesh or hub-and-spoke overlay and work out the goodput left after encapsulation.
Packet Scheduling CalculatorTurn scheduler weights into a real bandwidth share and estimate serialisation and queueing delay per class.
Path Health Score CalculatorScore a WAN path out of 100 from latency, jitter, loss and delivered throughput, with an estimated MOS.
QoS Bandwidth Allocation CalculatorSplit a link into voice, video, business and best-effort classes and check the 33% low-latency queue guideline.
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.
Traffic Policing CalculatorSplit offered traffic into conforming, exceeding and violating rates for a two-rate three-colour policer.
Traffic Shaping CalculatorCompute token-bucket shaper parameters — committed burst, excess burst and interval — from CIR and Tc.
Tunnel MTU CalculatorDerive the inner MTU and TCP MSS clamp for any tunnel type from the underlay path MTU.
VPN Bandwidth CalculatorSize the WAN circuit a remote-access or site-to-site VPN needs once encryption and encapsulation overhead is added.
VPN Health Score CalculatorGrade a VPN tunnel out of 100 using uptime, rekey failures, latency, loss and delivered throughput.
WAN Failover CalculatorAdd up BFD detection, routing convergence and application recovery to get real WAN failover time and downtime.
WireGuard Throughput CalculatorEstimate WireGuard tunnel throughput from link rate, packet size and per-core crypto performance.