Utilz
Online Stopwatch
Precise timing with lap tracking
00:00.00
Why Use This Tool?
- Millisecond-accurate timing using performance.now() API.
- Record unlimited lap times with best/worst highlighting.
- Clean, distraction-free interface — works on any device.
How It Works
Uses the browser's high-resolution performance.now() timer for sub-millisecond accuracy. Lap times show both the individual lap duration and cumulative total time.
How to Use
- Click Start to begin timing
- Click Lap to record split times
- Click Stop to pause the stopwatch
- Click Reset to clear all times
FAQ
How accurate is this stopwatch?
It uses performance.now() which provides microsecond-level precision. Display shows centisecond (1/100s) accuracy, which is more than sufficient for most timing needs.
What do the green and red lap colors mean?
When you have 2 or more laps, the fastest lap is highlighted in green and the slowest lap in red, making it easy to identify your best and worst splits.
Can I record multiple laps?
Yes, you can record unlimited laps. Each lap shows both the individual lap duration and the cumulative total time, making it easy to track your progress.