Stopwatch & Pomodoro Timer

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Quick Summary

A precise, drift-free stopwatch with laps plus a configurable Pomodoro focus timer with work/break cycles and an end-of-phase chime.

Interactive Client Prototype Sandbox

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How to use the Stopwatch & Pomodoro Timer

Step-by-Step Guide

Use the Stopwatch tab to start/lap/reset. On the Pomodoro tab, set your durations and cycles, then Start — it cycles focus and breaks automatically and chimes at each switch.

ExamplePomodoro 25/5/15 over 4 cycles ➔ focus 25:00 counts down, chimes, then a 5:00 break, and so on.

Who it's for

Students, remote workers, athletes, and anyone using focus or interval timing.

Core Features

Drift-free stopwatch (timestamp-based, not interval accumulation) with multiple laps.
Configurable Pomodoro: focus, short-break, and long-break lengths plus cycles-to-long.
Automatic phase cycling with an optional end-of-phase chime.
Centisecond precision; cleans up timers when you leave the page.

🛡️ No tracking — your inputs, keys, and details never leave this client sandbox.