How accurate is this online stopwatch?
It uses the high-resolution browser performance timer (`performance.now()`), accurate to fractions of a millisecond.
Timers & Utilities
Online Stopwatch — High-Precision Millisecond Lap Timer
Accurate millisecond stopwatch with split laps, lap comparison, and exportable timing logs.
00:00:00.000
Lap History
| # Lap | Split Time | Total Elapsed |
|---|
How It Works
1
Click "Start" to begin timing.
2
Press "Lap" to record interval split times.
3
Click "Pause" or "Reset" when your event is complete.
Frequently Asked Questions
Can I record and export lap splits?
Yes, hit "Lap" during timing to log each split, then export or copy the lap summary table.