Online Stopwatch
About the Online Stopwatch
When you need elapsed time without installing another app, an online stopwatch should feel as immediate as glancing at a wristwatch. This page is built for that everyday timing: press Start once and the display advances with high-resolution browser timing suitable for coaching cues, lab handoffs, ticket queues, and backyard sprint drills. Unlike a phone timer locked to countdown mode, a stopwatch measures how long something has been running, which is the right model when the finish line is unknown. Coaches call laps at each cone, reception desks stamp how long a caller waited, and students time how long a reaction needs to bubble.
How to use it
- Open the online stopwatch and place the browser window where you can see the digits while working.
- Press Start or the Space key to begin measuring elapsed time from zero.
- Tap Lap or press L at each milestone to record split and cumulative times.
- Use Stop or Space to pause without losing prior laps when you need a break.
- Press Reset or R to clear the session after copying any lap values you need to keep.
Good to know
The stopwatch counts while this tab is open. A slept tab can pause or jump. For a race result you may need to keep the phone unlocked in your hand.
Frequently asked questions
Is the Online Stopwatch free?
Yes. You can use it in your browser with no account and no download.
How accurate is the online stopwatch?
It uses the browser performance clock, typically updating every ten milliseconds - suitable for training and workflow timing.
Can I record multiple laps?
Yes. Press Lap or L while running to capture split and total elapsed time for each mark.
What keyboard shortcuts are supported?
Space toggles start and stop, L records a lap, and R resets the session.
Does it work on phones?
Yes. The layout is responsive and touch-friendly on modern mobile browsers.
Related
Saved settings stay in this browser. Read the privacy policy and terms.