Cloud Load Balancer Calculator
Price a Google Cloud load balancer from forwarding rules, data processed and egress, and size it against peak traffic.
About Cloud Load Balancer Calculator
A Google Cloud load balancer has two very different cost components: a small fixed hourly charge per forwarding rule, and a per-GiB data processing charge that scales with traffic. Internet egress is billed on top and is usually several times the processing rate, which is why the egress share of the bill is called out separately. Teams optimise the hourly rule charge and ignore the per-GiB lines, when for any real traffic volume egress and processing dominate — compressing responses or serving them from cache moves the bill far more than consolidating rules. Confirm processing and egress rates for your region and destination in the Google Cloud pricing calculator.
Formula
Cloud Load Balancer
monthly = (base rule charge + extra rules × per-rule charge) × hours + processed GiB × processing price + egress GiB × egress price, where processed GiB = requests × response size.
- forwarding rule
- The billable front-end of a load balancer — the first five share one hourly charge
- processed GiB
- Bytes the load balancer handles, billed separately from internet egress
- egress share
- Portion of responses that leave Google's network and attract internet egress rates
Worked example
With the default values below, Cloud Load Balancer Calculator returns Monthly Cost of $824.10. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Forwarding rulesaccepts 1–500 rules
- 3 rules
- Rules covered by the base chargeaccepts 0–50 rules
- 5 rules
- Base charge for the included rulesaccepts 0–100 USD/hour
- 0.025 USD/hour
- Charge per additional ruleaccepts 0–100 USD/hour
- 0.01 USD/hour
- Requests per monthaccepts 0–10,000,000 millions
- 500 millions
- Average response sizeaccepts 0.1–102,400 KB
- 20 KB
- Data processing price per GiBaccepts 0–10 USD/GiB
- 0.008 USD/GiB
- Share of responses leaving Google's networkaccepts 0–100 %
- 90 %
- Internet egress price per GiBaccepts 0–10 USD/GiB
- 0.085 USD/GiB
- Hours in the billing monthaccepts 1–744 hours
- 730 hours
- Peak requests per secondaccepts 0–10,000,000 RPS
- 4,000 RPS
Results
- Monthly Cost
- $824.10
- Forwarding Rule Charge
- $18.25
- Data Processing Charge
- $76.29
- Internet Egress Charge
- $729.56
- Data Processed
- 9 TiB
- Peak Throughput
- 655.4 Mbps
- Cost per Million Requests
- $1.6482
- Egress Share of the Bill
- 88.5%
Step by step
- 1Values used
- 2Cloud Load Balancer
- 3Monthly Cost= 824.10
- 4Forwarding Rule Charge= 18.25
- 5Data Processing Charge= 76.29
- 6Internet Egress Charge= 729.56
- 7Data Processed= 10,240,000,000,000
- 8Peak Throughput= 655.4 Mbps
Assumptions and limits
- The result is derived only from the 11 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax or compounding frequency into account.
- Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Cloud Load Balancer calculated?
monthly = (base rule charge + extra rules × per-rule charge) × hours + processed GiB × processing price + egress GiB × egress price, where processed GiB = requests × response size. A Google Cloud load balancer has two very different cost components: a small fixed hourly charge per forwarding rule, and a per-GiB data processing charge that scales with traffic. Internet egress is billed on top and is usually several times the processing rate, which is why the egress share of the bill is called out separately.
Why does Cloud Load Balancer matter?
Teams optimise the hourly rule charge and ignore the per-GiB lines, when for any real traffic volume egress and processing dominate — compressing responses or serving them from cache moves the bill far more than consolidating rules. Confirm processing and egress rates for your region and destination in the Google Cloud pricing calculator.
What values do I need to enter?
This calculator takes 11 inputs: Forwarding rules, Rules covered by the base charge, Base charge for the included rules, Charge per additional rule, Requests per month, Average response size, Data processing price per GiB, Share of responses leaving Google's network, Internet egress price per GiB, Hours in the billing month, Peak requests per second. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.
Do health checks and backend services cost extra?
Health checks are not billed separately. Backend services and URL maps are configuration objects rather than billable resources — the meters that matter are forwarding rules, data processed and egress.