Does it keep running if I switch tabs?

Yes. The elapsed time is based on the clock, so it stays accurate even if the tab is in the background, and catches up when you return.

The stopwatch runs entirely in your browser and nothing is uploaded or stored.

What is the difference between lap and split time?

Lap time measures only the latest segment, while split time is the total elapsed time from the start.

Productivity & Time

Online Stopwatch

A free online stopwatch with lap times, accurate to a hundredth of a second.

Free browser toolRuns in your browserNo sign-up

00:00.00

About the Online Stopwatch

A simple, accurate stopwatch you can use straight from your browser, with no app to install. Start and pause it as often as you like and it keeps counting to a hundredth of a second.

Record lap times to measure splits during workouts, experiments, cooking or games. Each lap shows both the split since the last lap and the total elapsed time.

Everything runs on your device, so it keeps ticking accurately as long as the tab is open.

Key features

Accurate to a hundredth of a second
Lap times with splits
Start, pause, resume and reset
No download, runs in your browser

How to use

1Select Start to begin timing.
2Use Lap to record split times.
3Pause or Reset when you are done.

Examples

Time several laps

Input: Start, record three laps, then pause

Output: Total elapsed time plus lap and split times

Pause and resume without losing the current elapsed time.

Frequently asked questions

Does it keep running if I switch tabs?: Yes. The elapsed time is based on the clock, so it stays accurate even if the tab is in the background, and catches up when you return.
Is my data saved?: The stopwatch runs entirely in your browser and nothing is uploaded or stored.
What is the difference between lap and split time?: Lap time measures only the latest segment, while split time is the total elapsed time from the start.

Open a related tool to prepare your files or refine the finished result.