Online stopwatch

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A stopwatch answers the opposite question to a timer: not how long is left, but how long something took. Press start and the display climbs from zero through minutes, seconds and hundredths, ready to be stopped, read and reset with no setting up first.

The winter months give it plenty to do. From November to March the running community here moves outdoors en masse — Kite Beach at first light, the Al Qudra cycle track before the sun is properly up, the loop around Dubai Creek Park — and a good deal of that training is self-timed. The Dubai Fitness Challenge in the autumn turns thirty minutes a day into a national habit, and thirty minutes is exactly the sort of thing people want to measure rather than estimate.

What it does

  • Start, stop and reset from one control
  • Lap splits recorded without interrupting the running total
  • Hundredths of a second for short efforts
  • Long sessions held without needing a restart

On accuracy the honest position is this: a browser reads time from the clock the operating system hands it, and background tabs are deliberately throttled to save battery, so a stopwatch left behind a dozen other tabs may update its display in jumps. Across a five-minute effort that difference is far smaller than the delay in your own thumb on the button. For anything official — a race result, a laboratory measurement, a record attempt — dedicated timing equipment exists for good reason and this is not a replacement for it.

Nothing is stored anywhere except your own device and nothing is sent away to be recorded. Close the tab and the reading goes with it, so write down whatever you want to keep before you navigate away. There is no history, no leaderboard and no export, which suits the way a stopwatch is actually used: once, for one thing, and then not thought about again.

Common questions

How accurate is a stopwatch running in a browser?

Accurate enough for training, cooking and everyday timing, where your own reaction on the button matters more than anything in the software. It is not suitable for official race results or laboratory work.

Can I record lap times?

Yes. Saving a lap records the split and leaves the main clock running, so several intervals can be collected within one continuous session.

Are my times saved anywhere?

No. Everything stays in the page on your own device and closing the tab clears it, so note down anything you want to keep beforehand.

Will it keep counting if I change tabs?

The count carries on, though the visible display may refresh less often until you come back, because browsers throttle pages you are not looking at.