Stopwatch

00:00.00

SPACE = Start/Stop | L = Lap | R = Reset

About This Tool

A precise online stopwatch with lap timing and split recording. Start, stop, and record laps with millisecond accuracy for sports timing, cooking, experiments, or any time measurement need.

How to Use

  1. Click Start to begin timing.
  2. Click Lap to record split times without stopping the clock.
  3. Click Stop to pause and Reset to clear.

Frequently Asked Questions

How accurate is an online stopwatch?

Browser-based stopwatches are accurate to within a few milliseconds, which is sufficient for nearly all practical purposes. Professional competitions use dedicated hardware.

What is the difference between split time and lap time?

Split time is the total elapsed time at each checkpoint. Lap time is the duration of each individual segment between checkpoints.