Stopwatch
Start, pause, and record lap times.
Stopwatch times an activity with start, pause, and reset controls, plus a lap button to record split times along the way — a simple tool for timing anything from a workout to a task duration.
00:00.00
How to use
- Click "Start" to begin timing.
- Click "Lap" any time to record a split.
- Click "Pause" then "Reset" to clear.
Common use scenarios
- Timing a workout, run, or exercise interval.
- Recording lap or split times during a practice session.
- Timing how long a task actually takes for productivity tracking.
- Timing a speech or presentation rehearsal.
✓Content & verification reviewed: 2026-08-25
How we verify Stopwatch
How to confirm the elapsed time and lap records are accurate.
Lap records a split without stopping the clock
Clicking Lap records the current elapsed time as a split and adds it to the list, but the stopwatch keeps running continuously — it doesn't pause or reset the main timer, so you can record as many laps as you need during one continuous run.
Pause stops the clock, Reset clears everything
Pause freezes the elapsed time so you can resume from exactly where you left off — Reset, by contrast, clears the elapsed time back to zero and empties the lap list entirely, so use Pause if you just need a temporary stop.
Precision depends on the tab staying active
Timing accuracy relies on the browser tab remaining open and active — if the tab is backgrounded for a long time or the device sleeps, timing may not stay perfectly precise, so keep the tab active for tasks where exact precision matters.
Before you rely on the result
- You've used Pause (not Reset) if you need a temporary stop without losing your elapsed time.
- You understand Lap records a split without interrupting the running clock.
- You've kept the tab active and open for tasks where precise timing matters.
- You've noted or exported lap times before resetting, if you need to keep a record.
Who this is for
- Anyone timing a workout, run, or exercise interval.
- Coaches or athletes recording lap or split times during practice.
- Anyone timing how long a task actually takes for productivity tracking.
- Speakers or performers timing a rehearsal.
Real-world examples
Timing interval training
Someone doing a workout with multiple timed intervals uses Lap to record each interval's duration without stopping the overall stopwatch between sets.
Recording practice lap times
A runner practicing on a track uses Lap at the end of each loop to build up a list of individual lap times for later review.
Tracking actual task duration
Someone curious how long a recurring task really takes starts the stopwatch when they begin, letting them see an honest elapsed time rather than guessing.
Limitations
- Precision depends on the browser tab staying active and in the foreground.
Frequently asked questions
Does clicking Lap stop the stopwatch?
No — Lap just records the current elapsed time as a split and adds it to the list; the main clock keeps running continuously in the background.
What's the difference between Pause and Reset?
Pause freezes the elapsed time so you can resume from where you left off; Reset clears everything back to zero, including the lap list, so you can't resume from a reset state.
How accurate is the timing?
It's accurate as long as the browser tab stays open and active — if the tab is backgrounded for a long stretch or the device sleeps, precision may be affected.
Can I export or save my lap times?
The lap list stays visible on screen during your session, but there's no built-in export — note down or screenshot the times before resetting if you need to keep a permanent record.
🔒 Runs in your browser — nothing is uploaded. Results are for reference only; see the disclaimer. Last updated: 2026-08-25
Subscribe for updates
New tools and tips, straight to your inbox. No spam, unsubscribe anytime.