Online Stopwatch

Accurate, distraction-free timing

This stopwatch measures elapsed time from the system clock rather than counting intervals, so it stays accurate even when the browser tab is throttled in the background — stop it after ten real minutes and it will read ten minutes. Lap times record split moments without interrupting the count, and the display is sized to be readable from across a room or sports field.

Useful for timed reading fluency checks, science experiments, PE sprints and debate rebuttals. For counting down to zero instead, switch to the countdown timer.

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