Секундомер
Бесплатный онлайн-секундомер с полноэкранным режимом, замером кругов и точностью до миллисекунды для спорта, кулинарии, экспериментов и не только.
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How accurate is the online stopwatch?
It reads your device's clock rather than counting timer ticks, so displayed time stays in step with the system clock. For study sessions, workouts, cooking and sports timing this is more than precise enough; for laboratory-grade measurement, use dedicated hardware timers.
What is the difference between a lap and a split?
A lap is the time for one individual segment (each press of the lap button starts a new segment), while the split is the running total since you started the stopwatch. Runners usually track laps per circuit; coaches watch splits for cumulative pace.
Does the stopwatch keep running if I switch tabs or lock my phone?
In most modern browsers, yes — the elapsed time is calculated from the device clock, so backgrounding the tab does not lose time, though display updates pause while the tab is hidden. Very aggressive battery savers can still interfere, so for long timings keep the device awake.
Is my timing data uploaded anywhere?
No. The stopwatch runs entirely in your browser, and lap history stays on your device until you close or reset it.
