Step by step
- iPhone or Android: Clock app › Stopwatch.
- Or open the stopwatch above in your browser.
- Use full screen for a big display.
At a glance
| Option | Runs when locked? | Best for |
|---|---|---|
| Clock › Stopwatch | Yes | Everyday timing |
| Browser stopwatch | Keep the screen on | Big display, same tool everywhere |
| Smartwatch | Yes | Running, gym |
Related questions
Does the iPhone stopwatch have laps?
Yes, tap Lap while it runs.
Why does the browser stopwatch show the right time after I return?
It calculates from the start time, so it catches up instantly.
Can I use it during a call?
Yes, in another app or tab.
More questions: online stopwatch
- How to use an online stopwatch (start, lap, stop, reset)
- Full-screen online stopwatch for classrooms and presentations
- Online stopwatch with lap times (splits)
- How to use a stopwatch to track study time
- How to time Rubik's Cube solves with an online stopwatch
- Stopwatch vs timer: can a stopwatch count down?
- What is a stopwatch and what is it used for?
- Can you put a stopwatch in PowerPoint?
- Is there a stopwatch on a Mac?
Open the full online stopwatch →
Updated November 14, 2026.