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Free online stopwatch

Online stopwatch
with laps.

Hundredths, lap splits and full screen. It keeps time in a background tab and through a sleeping laptop, which is where most of them go wrong.

0 seconds elapsed

Counting down instead? Set a timer.

✦ The part that usually breaks

Most online stopwatches lose time.

The obvious way to build one is to add a few milliseconds to a number on every tick. It works perfectly on a visible tab and fails everywhere else: browsers throttle intervals in the background to save battery, and stop them altogether when a laptop sleeps. A stopwatch left running through lunch comes back minutes short and never tells you.

This one records the instant you pressed start and subtracts it from now. Nothing is counted, so nothing can be missed — the tab being asleep just means nobody was looking.

✦ What it is for

What people time with a stopwatch.

Intervals and sets

Laps are the point: each split lands next to the last one, so a set that is drifting is visible while you can still do something about it.

Running and swimming

Hundredths, a big readable clock, and full screen for a phone propped at the end of a lane.

Finding out how long things take

The honest cure for a bad estimate. Time the task once and the guess stops being a guess.

Cooking and experiments

When you need elapsed time rather than a deadline, and want to mark the moments along the way.

Speaking practice

Run it through a rehearsal, lap each section, and see which part is eating the talk.

Games and turns

Elapsed time everyone can see, without an app or a phone passed around.

✦ After you stop it

A stopwatch measures.
It does not remember.

The number on the clock is gone the moment you close the tab, and with it the only evidence of how long that thing really took. Which is a shame, because that is the number that fixes estimates.

EvyOS runs the same clock attached to a task or a skill, so the time lands on the record instead of evaporating. After a month you can answer “how long does this actually take me” with data rather than a feeling.

Questions

The stopwatch, answered.

Yes, and this is where most online stopwatches quietly fail. A stopwatch built by adding up intervals loses time as soon as the browser throttles a background tab, and loses all of it while a machine sleeps. This one records the instant it started and subtracts, so a sleeping laptop simply is not watched, and the number is correct the moment you come back.
Press Lap while it runs and the current time is recorded along with the split since the previous lap. Laps are listed newest first, because the one you just took is the one you want to read, and once there are at least two the fastest and slowest are marked.
Yes. Stop banks the time already run, and Start picks up from there rather than beginning again. Reset is the only thing that clears it, and it clears the laps too.
Yes, one button. The digits scale to the screen, which is what makes it readable from a poolside, a track, or the back of a room.
Completely. No account, no card, no download and no ads. EvyOS is a productivity app and this is one of its free tools; signing in only matters if you want the time to be recorded against something.

You timed it once.
Now find out if it is getting faster.

EvyOS keeps the minutes against the task, the skill and the habit they belonged to.

Start for free