Backoff & Retry Delay Calculator

Plan the delay schedule for an exponential-backoff retry loop — the kind every resilient HTTP client, queue consumer and circuit breaker uses. Enter the base delay, backoff factor, maximum cap and number of attempts, pick a jitter strategy (none, full, equal, or decorrelated), and the tool lists the deterministic delay envelope and jitter range per attempt, plus the worst-case cumulative wait. Jitter is shown as a range rather than a single random draw, which is what you actually need for capacity and timeout planning. Pure arithmetic, in your browser.