Stopwatch
A simple stopwatch for timing tasks, workouts, and events.
Ready
00:00:00.000
In-depth explanation
Start, pause, and reset elapsed time. Record laps to compare splits — useful for workouts, cooking, or timing work blocks. Everything runs locally in your browser — your inputs are not uploaded to produce the result.
It displays down to milliseconds using your device clock. Each lap records the split since the previous lap and the total time from the start.
Elapsed time is based on wall-clock timestamps, so background tabs stay accurate. Tweak the inputs above to compare options, then copy or note the result you need.
Laps are splits from the previous lap plus total from start — useful for intervals. Accuracy follows the device clock; it is fine for kitchen and gym use, not for officiating a race.
Leaving the tab in the background should still accumulate correctly because start time is stored. Reset clears laps. If you need a countdown rather than elapsed time, use the Countdown Timer.
Frequently asked questions
How precise is the stopwatch?
It displays down to milliseconds using your device clock.
What is a lap?
Each lap records the split since the previous lap and the total time from the start.
Does it keep running in the background?
Yes. Elapsed time is based on wall-clock timestamps, so background tabs stay accurate.
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