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API Gateway Rate Calculator

Calculate rate limits, burst capacities, and throttling thresholds for API gateway configurations. Plan your traffic management strategy. Code never leaves your device — formatting and validation run locally in your browser.

100% Local Browser Native

How to Use the API Gateway Rate Calculator

1. Fill the inputs

Enter requests with rate tier.

2. Read estimated cost

Check estimated cost with tier math.

3. Compare scenarios

Save both outputs before deciding — side-by-side numbers beat memory.

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Frequently Asked Questions

Requests per second math?

Quota divided by window — 1000/day means ~0.7 sustained RPS with burst headroom.

Burst vs sustained?

Buckets absorb bursts; sustained rate must stay under refill, or 429s start.

Per-key or global?

Calculate both — per-key protects neighbors, global protects the service.

Are my gateway numbers uploaded anywhere?

No — calculation runs locally in your browser, free with no signup.

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Last updated October 2026