Stopwatch
A precise online stopwatch with lap times.
00:00.00
Keyboard: Space start/pause · L lap · R reset
Laps
- No laps yet.
Continue your work
- Countdown Timer — Count down to a fixed duration instead.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Stopwatch
Measure elapsed time and record lap intervals in the browser.
- 1 Click Start, or use Space when the timer controls have focus as intended.
- 2 Use Lap or L to record a split while the stopwatch runs.
- 3 Pause to inspect times and use Reset or R when you are ready to clear the session.
Example and practical tips
Record a lap at the end of each practice run to compare intervals.
Frequently asked questions
Will it behave like a dedicated timing device in the background?
Browser scheduling, sleeping devices and tab lifecycle can affect timing or display updates. Do not use it for precision-critical measurement.
Does Reset preserve laps?
Reset clears the current timing session. Copy any values you need before resetting or leaving the page.