A free online stopwatch with lap times
This online stopwatch measures time to one hundredth of a second. Press Start to begin, Stop to pause and Start again to continue. While it is running, press Lap to save a split time. Each lap shows the time of that lap and the total time so far, with the newest lap at the top. It works in any browser and needs no download.
Keyboard shortcuts
- Space: start or stop
- L: record a lap
- R: reset
What a stopwatch is useful for
- Running and cycling: record split times for each lap or kilometre.
- Swimming and gym training: time sets, rest and intervals.
- Cooking and experiments: measure how long a step really takes.
- Speeches and presentations: practise and check how long each part lasts.
- Games and quizzes: time players fairly, with lap times for each round.
Stopwatch or timer?
A stopwatch counts up from zero and shows how much time has passed. A timer counts down from a time you choose and alerts you at zero. If you want to be told when time is up, use the online timer. If you want to measure how long something takes, use this stopwatch.
Frequently asked questions
How do I use the online stopwatch?
Press Start to begin timing, Lap to save a split time, Stop to pause and Reset to clear everything. You can also use the Space, L and R keys.
How accurate is the stopwatch?
It shows hundredths of a second and uses your device clock, so it stays accurate even if the page is busy.
Can I record lap times?
Yes. Press Lap while the stopwatch is running. Each lap shows its own time and the total time, and the newest lap appears first.
What is the difference between a stopwatch and a timer?
A stopwatch counts up to measure elapsed time. A timer counts down and alerts you when it reaches zero.
Is the stopwatch free?
Yes. It is free, has no ads and does not need a sign-up.
More free tools
Digital clock with seconds · Online countdown timer · World clock