Cronometro
A precise online stopwatch with lap and split timing — no install, no sign-up.
This is a plain, reliable stopwatch that runs in your browser. Press the middle button to start and stop, tap the timer button to record a lap while it's running, and use the reset button to clear everything back to zero. It counts in minutes, seconds and hundredths, so it's fine for timing a workout interval, a cooking step, a speech rehearsal, or anything else where you need to know exactly how long something took.
Recording laps and splits
Each time you press the lap button, the current elapsed time is saved to the list and numbered, while the main clock keeps running uninterrupted. This lets you capture a series of moments — the end of each lap on a track, each round of an exercise, or each stage of a task — without stopping the timer. The most recent lap appears at the top of the list so you don't have to scroll during fast repetitions, and the counter shows how many you've logged so far.
How accurate is a browser stopwatch?
The display refreshes about every hundredth of a second, but the elapsed time itself is measured against your device's system clock rather than by counting those refreshes, so the total stays accurate even if a frame is skipped. That makes it dependable for everyday timing down to fractions of a second. One thing worth knowing: if you switch to another browser tab, most browsers slow background timers to save power, so the on-screen digits may pause. When you return, the stopwatch reads the real elapsed time again and the total is still correct — only the live animation was throttled.
Timing without distractions
Non c'è nessun account da creare né niente da installare: la pagina è pronta nel momento in cui viene caricata. Poiché tutti i tempi vengono eseguiti sul tuo dispositivo, continua a funzionare anche se la tua connessione si interrompe a metà sessione, il che è utile in pista, in palestra o ovunque il segnale sia debole. Niente dei tuoi tempi lascia il browser.
Domande Frequenti
What is the difference between a lap and a split?
A lap is the time for one segment on its own, while a split is the total elapsed time at the moment you press the button. This stopwatch records the running total each time you tap lap, so you can read the splits directly and subtract to find individual lap times.
How accurate is the stopwatch?
Timing is based on your device clock and the display updates roughly every hundredth of a second, so it is reliable to fractions of a second for everyday use. It is not a substitute for certified timing equipment in official competition.
Does it keep timing if I switch tabs?
The total stays correct because elapsed time is calculated from the system clock, not by counting screen updates. However, the live digits may appear to pause in a background tab, because browsers throttle timers to save power. They catch up as soon as the tab is active again.
Are my times saved anywhere?
No. The stopwatch and any laps you record exist only in the current page. Refreshing or closing the tab clears them, and nothing is sent to a server.