Online Stopwatch

A precise online stopwatch with start, stop, lap and split timing that keeps running accurately in the background. No install, no ads shouting at you — just a clean timer.

100% free No uploads Runs in your browser No signup

Stopwatch

0:00.00

The stopwatch uses the browser's high-resolution performance timer (accurate to hundredths of a second). Keep this tab in the foreground for perfect accuracy — background tabs are throttled by the browser.

How to use the Online Stopwatch

1
Open the tool above — it is already running, no install or account needed.
2
Enter your input and adjust the options to match what you need.
3
Copy or download the result — everything was processed locally in your browser.

Private by design

This tool runs 100% inside your own browser using local JavaScript — your input never touches a server. That makes it instant, offline-capable in many cases, and private even for sensitive data.

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