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Stopwatch Online

Start, pause, reset and record laps with the free online stopwatch. It shows minutes, seconds and centiseconds and runs accurately in your browser. The lap button records a split so you can compare intervals in a single run.

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What is Online Stopwatch?

A stopwatch is a timer you start, pause, reset and split into laps, and this one runs entirely in your browser. It displays elapsed time as minutes, seconds and centiseconds — hundredths of a second — so it is precise enough to time a workout, a task, a presentation or a cooking step. Its high-resolution clock measures the true elapsed time with far greater accuracy than a plain second counter. You press Start to begin, the button flips to Pause to hold the current time, Lap records a split so you can compare intervals, and Reset returns everything to 00:00.00. Each lap is labelled and timestamped, so you can track multiple segments of the same activity without losing the running time. It is a clean, no-frills timer that keeps running as long as you leave the page open, and nothing is uploaded anywhere. Because it shows hundredths of a second, it also works for quick experiments where you want to compare two timings almost side by side.

How to use Online Stopwatch

Click “Start” to begin timing.
Click “Pause” (the same button) to hold the time, then Start again to resume.
Click “Lap” to record a split while the clock is running.
Click “Reset” to return the stopwatch to 00:00.00.

Example

Start → wait 45 seconds and 30 hundredths → Lap → Pause Lap 1 displays 00:45.30 while the main display holds the same time. Press Start again to run from where you paused.

Common use cases

Timing a workout, run or interval to track your pace.
Measuring how long a task, meeting or presentation actually takes.
Timing a cooking recipe or a process that needs a precise split.
Recording lap times for a race, drill or practice session.

Pro tips

Use Lap, not Pause, when you want to keep the clock running and only note a split.
The count continues while the tab stays open, so keep the page visible for long timings.
For a countdown to a deadline, use a countdown timer rather than a stopwatch.

FAQ

How does this online stopwatch work?

Click Start to begin timing, Pause to hold the current time, Reset to return to zero, and Lap to record a split.

Is it accurate?

Yes. It uses the high-resolution browser clock to measure elapsed time, so pauses and laps are precise.

Is this stopwatch free?

Yes. It runs entirely in your browser and no data is uploaded anywhere.

What is the precision?

It displays centiseconds — hundredths of a second — not just whole seconds.

How do I record a lap?

Click Lap while the clock is running; each lap is labelled and timestamped.

Does the time keep running if I leave the page?

It runs while the page stays open. Refreshing or closing the tab resets it.

What is the difference between Pause and Lap?

Pause holds the clock; Lap records a split and keeps the clock running.

Can I use it for a workout?

Yes. Lap is ideal for timing intervals and comparing splits.