Stopwatch with Lap Times
Start, record laps and compare splits. Works on your phone or computer with nothing to install.
How to use the stopwatch
- Press Start to time to 1/100 of a second.
- Press Lap while running to save a split. Up to 99 laps are kept.
- Stop pauses, Resume continues without the paused time, and Reset clears everything.
Split vs total
The split is the time since the previous lap; the total is the time since you started. The fastest split is shown in green and the slowest in red.
| Lap | Split | Total | |
|---|---|---|---|
| Lap 1 | 01:32.48 | 01:32.48 | |
| Lap 2 | 01:34.67 | 03:07.15 | |
| Lap 3 | 01:36.75 | 04:43.90 | Slowest |
| Lap 4 | 01:32.32 | 06:16.22 | Fastest |
Does it keep time in the background?
Yes. It saves the moment you pressed Start and subtracts it from the current time, so switching tabs, locking the phone or reloading the page does not lose time. The start time and laps are stored in this browser only.
FAQ
What is a lap time?
The time recorded when you press Lap. This stopwatch shows the split since the previous lap and the total since you started.
Does it keep running in another tab?
Yes. Time is calculated from the moment you pressed Start, so switching tabs or reloading does not lose time.