About the online stopwatch
A simple, accurate stopwatch in your browser. Press Start (or the space bar), record laps with L, and stop when you're done. Your fastest lap turns green and the slowest turns pink.
The start time is saved in your browser, so a refresh or accidental tab close won't lose your time.
How to use the online stopwatch
- Press Start or the space bar.
- Press Lap (or L) to record a split without stopping.
- Press Stop to pause, Start to resume, Reset to clear.
Keyboard shortcuts
- Space start / stop
- L lap
- R reset
- F full screen
Frequently asked questions
Is this stopwatch accurate?
It uses your device clock, so it stays accurate even if the tab is in the background or the screen dims. The display updates every frame and shows hundredths of a second.
Will the stopwatch keep going if I close the tab?
Yes. The start time is stored in your browser; when you reopen the page it shows the correct elapsed time.
Is it free, and do I need an app?
It is completely free with no sign-up or download. It works in any modern browser on phones, tablets and computers.