Online Stopwatch

Start, lap, stop – with big digits for the classroom or the gym.

00:00.00

Keyboard: Space = start/stop · L = lap · R = reset

A simple stopwatch that just works

Press Start and the stopwatch counts in hundredths of a second. Tap Lap to record split times: the list shows each lap and the total, with the fastest lap in green and the slowest in red. Copy all laps to paste into a spreadsheet.

The time is based on the system clock, so it stays accurate even if your phone locks the screen or you reload the page. Switch to fullscreen to show big digits on a projector, a TV or a tablet next to the track.

How to use

  1. Press Start (or the Space bar).
  2. Press Lap (or L) to save a split time.
  3. Press Stop to pause, Resume to continue.
  4. Press Reset (or R) to clear the time and laps.

Ideas for using it

  • Running laps. record every lap on the track and spot your fastest.
  • Classroom. time a quiz round or a science experiment on the board.
  • Kitchen. time how long the eggs or the pasta have been cooking.
  • Games. who can solve the puzzle fastest?

Frequently asked questions

Does it keep running if I close the tab?

Yes. The start time is saved, so when you come back the stopwatch shows the correct elapsed time.

How accurate is it?

It displays hundredths of a second and uses your device’s clock. For everyday timing it is very accurate; it is not meant for official sports timing.

Are there keyboard shortcuts?

Space starts and stops, L records a lap, R resets.

Can I export the laps?

Tap Copy to copy all laps as a table you can paste into a spreadsheet or a message.