Stopwatch
A clean stopwatch with start, stop, lap and reset — runs in your browser.
Inputs
Tip: keep this tab in focus for best timing accuracy.
Result
Elapsed
00:00:00.00
Next useful calculators
Formula
Elapsed time = now − start time, accumulated across pauses.
Example
Press Start, then Lap to record split times. Reset clears everything.
Common examples
Workout intervals
Lap each set; review splits after.
Cooking timer
Quick browser-based timing.
Practice runs
Compare lap times session-to-session.
Frequently asked
Does it run in the background?
Browsers throttle inactive tabs. Keep the tab visible for the smoothest updates.
How precise is it?
Display shows centiseconds (0.01s). The underlying clock is millisecond-accurate.
Will my laps be saved?
Laps live in this tab only — Reset clears them and closing the tab discards them.