Online stopwatch
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Syncing • Using device time Note: the value above does not include device-clock drift accumulated after calibration. This is generally no more than ±1 ms per minute, but the actual rate varies by device. The lowest round-trip latency measured between your browser and the current time-service node. It is typically affected by physical distance, network routing, access quality, and current congestion. Network latency describes the measured connection. The time-error range is calculated separately; it is not half the latency. This error does not show whether your device clock is fast or slow.
Measure elapsed time, pause and resume, and record individual laps with their cumulative times.
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Ready
00:00:00.00
Space · Start / Pause · L · Lap · R · Reset
Lap records 0
No laps recorded yet.
Keep this page open and your device awake. Sleep may interrupt elapsed-time measurement. Refreshing or leaving clears the stopwatch and laps.