Online Stopwatch
Start a stopwatch, record laps and keep a large time display in focus view.
How to use it
Press Start to begin, Pause to stop temporarily and Start again to continue. Lap records the total elapsed time at that moment. Reset clears the time and laps.
Useful example
For three practice rounds, record a lap after each round. Each entry is cumulative; subtract consecutive readings to find an individual round.
Tips
The display uses hours, minutes, seconds and hundredths. It uses the browser's monotonic clock rather than counting timer callbacks. Keep the tab open; it is not a certified sports timer.
Frequently asked questions
Does this tool upload my inputs?
No. The calculation or conversion happens on your device. You do not need an account.
Can I use it on a phone?
Yes. The controls adapt to smaller screens and work with touch and keyboard input.
What should I know about the result?
The display uses hours, minutes, seconds and hundredths. It uses the browser's monotonic clock rather than counting timer callbacks. Keep the tab open; it is not a certified sports timer.
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