Calculate API rate limits. A must-have tool for API development and testing.
Set up your API request or data.
Run or process the request.
See the formatted response.
Use the Rate Limit Calculator when designing API rate limiting strategies, estimating capacity requirements for high-traffic endpoints, or configuring rate limiting middleware. It is essential for API architects planning throttling policies that balance security with user experience. DevOps teams use it to plan infrastructure scaling based on expected request volumes.
Yes, the Rate Limit Calculator is completely free with no restrictions. Calculate and plan rate limiting strategies for your APIs without any premium features or usage limits. All calculation modes and algorithms are available to all users.
No, the Rate Limit Calculator performs all calculations locally in your browser. It helps you plan rate limiting strategies by calculating requests per second, minute, or hour based on your requirements. No actual API requests are sent — it is a planning and calculation tool.
The calculator supports common rate limiting algorithms including fixed window, sliding window, token bucket, and leaky bucket. It calculates limits in various time units (per second, minute, hour, day) and helps you determine appropriate X-RateLimit header values for your API responses.
