What is this online stopwatch for?
This is a free, browser-based stopwatch built for anything that needs accurate timing — workouts, interval training, cooking, studying, presentations, or timing tasks at work. It measures elapsed time to the hundredth of a second and lets you record lap splits as you go, all without installing an app or creating an account.
How to use the online stopwatch
Click Start to begin timing. Click Lap at any point to record a split — each lap shows its own duration alongside the total elapsed time, with the fastest and slowest laps highlighted once you have three or more. Click Start again (now labeled Pause) to pause, and Reset to clear everything and start over. The circular dial fills as time passes so you always have a quick visual sense of pace.
Common uses
- Timing workout intervals, runs, or rest periods
- Tracking lap splits for swimming, cycling, or track training
- Keeping presentations, speeches, or exam sections on schedule
- Timing cooking steps or study sessions
- Measuring how long a task actually takes for productivity tracking
Frequently asked questions
How accurate is this online stopwatch?
It measures time in hundredths of a second using your browser's high-resolution clock — accurate enough for workouts, cooking, studying, and most everyday timing.
Can I record lap times?
Yes. While running, click Lap to record the current split. Each lap lists its split time and total elapsed time, most recent at the top.
Does the stopwatch keep running if I switch tabs?
Yes. Timing is based on the system clock rather than a simple counter, so elapsed time stays accurate even in a background tab.
Do I need to download anything?
No — it runs entirely in your browser, with no installation, signup, or account required.