Online stopwatch

Measure elapsed time, record laps and download split and total times.

On your device · No account

Privacy details

Online stopwatch processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Ready

00:00:00.00

Keep this tab open and your device awake. Browser suspension can delay sound; this is not a reliable wake-up alarm.

Timer settings and sound

Play a sound at completion or phase change

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-20

Using Online stopwatch

Start the stopwatch, use Lap to record a split without stopping, and pause when you finish. Resume adds to the same elapsed time. Reset clears the elapsed time and the current lap list.

A worked example

If you record laps at 10 and 25 seconds, the splits are 10 and 15 seconds and the total is 25 seconds.

Before you use the result

Display precision is one hundredth of a second, not a claim of timing accuracy. Browser scheduling and device clock changes affect measurements. No times are stored after the page closes.

Next: Average time calculator

Next: Countdown timer

Cite this page

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ToolOctopus. “Online stopwatch.” Updated 2026-09-20. https://tooloctopus.com/stopwatch.

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