Specialty & Activity Timers

Contraction Timer (Stopwatch)

One-tap labor contraction stopwatch with lap history to track duration and frequency.

00:00.00

Press Space to start or pause · ? for shortcuts

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Keyboard shortcuts

Space
Start / pause
R
Reset
L
Lap
F
Fullscreen
M
Mute / unmute
Esc
Stop alarm / exit fullscreen
?
Show shortcuts

Free Online Contraction Timer (Stopwatch)

Time labor contractions easily on your phone. Tap Start when a contraction begins and Lap to log each duration.

Press Start and the contraction timer starts counting right away. It works in any browser on your phone, tablet or computer, and there is nothing to install.

Tap Lap whenever you want to save a split. Each lap shows your total time so far and the time for that lap alone, so you can see straight away whether you are getting faster or slower. Runners, swimmers, speedrunners and cubers use it to track every lap and solve.

The stopwatch works from your device's clock rather than counting ticks. If you switch tabs or your screen dims, it doesn't fall behind. Come back and the time is still right.

Precision
1/100 of a second
Laps
Unlimited, with split times
Price
Free, no sign-up

Frequently Asked Questions

Does the stopwatch keep running if I switch tabs?

Yes. It works out the elapsed time from your device's clock, so it stays accurate when the tab is in the background. Just don't close the tab or the browser.

How do lap times work?

Tap Lap while the stopwatch is running. A new row shows the lap number, your total time and how long that lap took on its own (shown as +MM:SS). The list keeps growing as you add laps.

How do I reset it to zero?

Press Pause first. The Lap button changes to Reset. Tap it once and the time and all your laps are cleared.

Can I save my lap times?

Yes. Under the lap list, tap Copy to paste your laps into a message or spreadsheet, or Download CSV to save them as a file. Your laps also stay on the page if you reload it.

Is it really free?

Yes. There is nothing to download, no account to create and no subscription.

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Free Online Contraction Timer (Stopwatch)

Time labor contractions easily on your phone. Tap Start when a contraction begins and Lap to log each duration.

Press Start and the contraction timer starts counting right away. It works in any browser on your phone, tablet or computer, and there is nothing to install.

Tap Lap whenever you want to save a split. Each lap shows your total time so far and the time for that lap alone, so you can see straight away whether you are getting faster or slower. Runners, swimmers, speedrunners and cubers use it to track every lap and solve.

The stopwatch works from your device's clock rather than counting ticks. If you switch tabs or your screen dims, it doesn't fall behind. Come back and the time is still right.

Precision
1/100 of a second
Laps
Unlimited, with split times
Price
Free, no sign-up

Frequently Asked Questions

Does the stopwatch keep running if I switch tabs?

Yes. It works out the elapsed time from your device's clock, so it stays accurate when the tab is in the background. Just don't close the tab or the browser.

How do lap times work?

Tap Lap while the stopwatch is running. A new row shows the lap number, your total time and how long that lap took on its own (shown as +MM:SS). The list keeps growing as you add laps.

How do I reset it to zero?

Press Pause first. The Lap button changes to Reset. Tap it once and the time and all your laps are cleared.

Can I save my lap times?

Yes. Under the lap list, tap Copy to paste your laps into a message or spreadsheet, or Download CSV to save them as a file. Your laps also stay on the page if you reload it.

Is it really free?

Yes. There is nothing to download, no account to create and no subscription.

All timers →
Online Timer 5 Minute Timer 30 Minute Timer 10 Minute Timer 1 Minute Timer 15 Minute Timer Pomodoro Timer Pomodoro Timer 20 Minute Timer 3 Minute Timer 2 Minute Timer 25 Minute Timer New Year Countdown 4 Minute Timer 40 Minute Timer 45 Minute Timer 6 Minute Timer 8 Minute Timer Christmas Countdown Christmas Countdown 2 Hour Timer 13 Minute Timer 30 Second Timer 12 Minute Timer