# Stopwatch

> Stopwatch: precision online stopwatch with lap times, split recording, and hundredth-of-a-second accuracy for timing anything. Free, private, no signup.

- **Canonical URL:** https://boringtoolskit.com/stopwatch/
- **Category:** Time & Work
- **Evidence level:** authored-methodology
- **Reviewed:** July 26, 2026
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## Common questions

### How does the stopwatch work?

The stopwatch runs entirely in your browser using JavaScript ,  no signup, no installation, and no data is sent to any server.

### Can I use the stopwatch on my phone or tablet?

Yes, the stopwatch is a web-based tool that works on any device with a modern browser, including phones and tablets.

### Does the stopwatch save my timing data?

No, the stopwatch does not store or track any of your timing data. Everything stays on your device and is lost when you close the tab.

## Sources

- [Calculation methodology](/methodology/)
- [Quality evidence and verification standard](/quality-evidence/)

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