What is Online Stopwatch?
Online Stopwatch measures elapsed time to the hundredth of a second, with lap and split times. Start, stop and record laps with a click or your keyboard, and see your fastest and slowest laps highlighted automatically.
It keeps counting correctly in a background tab and even survives a page reload, so a long timing session won’t be lost by accident. Laps can be copied as text for spreadsheets or training logs.
How to use Online Stopwatch
Get it done in 4 simple steps — no installation or account needed.
- Press Start (or Space) to begin timing.
- Press Lap (or L) to record a lap without stopping.
- Press Stop (or Space) to pause; Start again to continue.
- Press Reset (or R) to clear, or copy your laps first.
Who needs Online Stopwatch?
From students to professionals, here’s who gets the most out of Online Stopwatch — and why.
Runners & athletes
Record lap and split times during training.
Coaches & teachers
Time races, drills and classroom experiments.
Speakers
Practise talks and presentations to time.
Everyone
Time anything from tasks to boiled eggs.
Is Online Stopwatch safe to use?
Yes. Online Stopwatch runs entirely in your web browser using JavaScript. Your files and data are processed on your own device and are never uploaded to AppsOcean or any third-party server. There’s nothing to install, no account to create, and it’s completely free.Read our privacy policy.
Online Stopwatch — frequently asked questions
What’s the difference between lap and split time?
Lap time is the duration of one lap. Split time is the total time elapsed since the start when that lap was recorded.
Does it work offline?
Yes. Once the page has loaded, the stopwatch works without an internet connection.
How accurate is the stopwatch?
It uses your device’s high-resolution clock and shows hundredths of a second. It keeps counting correctly in background tabs and survives a page reload.
Last updated