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Free AWS Lambda pricing calculator for developers and cloud teams. Estimate monthly and annual serverless costs from requests, function duration, memory allocation, and free-tier usage using our programming calculators.
Last updated: April 14, 2026
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Monthly Cost
$23.13
Annual Cost
$277.60
Request Cost
$4.80
Compute Cost
$18.33
Unit pricing
Per 1M requests
Calculates billable requests after optional free-tier subtraction.
Core metric
GB-seconds
Computes billable execution volume from invocation characteristics.
Optimization path
Rate-aware
Helps evaluate savings when migrating to Graviton architecture.
Planning horizon
Month + Year
Provides monthly and annualized projections for finance planning.
KPI
$ / 1M
Useful for comparing different function configurations over time.
Ops value
Actionable
Great for rough planning before deeper CloudWatch-based optimization.
For 25M requests, 120ms duration, 512MB memory:
Estimated Monthly
$25-$40 range
Main Cost Driver
Compute time
This calculator models Lambda billing by combining request volume with compute usage (GB-seconds). It then applies architecture-specific pricing and optional free-tier credits to estimate billable monthly spend.
gb-seconds = requests × duration-sec × memory-gbrequest-cost = billable-requests / 1,000,000 × ratecompute-cost = billable-gb-seconds × gb-second-ratetotal = request-cost + compute-costFree-tier credits reduce billable requests and billable GB-seconds before pricing is applied.
From invocation profile to monthly serverless cost estimate
Lambda cost modeling depends on execution duration distribution, memory profile, and invocation frequency. This estimator is best used for baseline forecasting, then refined with production metrics and regional AWS price checks.
Pair this with our cloud cost estimator and scaling cost calculator for full cloud budget planning.
Get Custom Developer Tool for Your PlatformResult: Duration optimization is frequently the biggest Lambda cost lever.
Profile and benchmark functions before finalizing memory architecture choices.
Share it with cloud and serverless engineering teams
Suggested hashtags: #AWS #Lambda #Serverless #CloudCost #DevOps #Calculator