Smart Calcs
All Calculators

Stopwatch

Track elapsed time and record lap splits for runs, lifts, and intervals.

Elapsed

00:00.00

Laps

Press Lap after Start to record splits here.

Lap Split Total

How to use

Press Start to run, Lap to mark a split, Pause to freeze the clock, and Reset to clear. Lap table shows each split and cumulative time.

FAQ

  • Does it run in the background? Keep the tab open for accurate timing; background tabs may throttle on some devices.
  • Millisecond precision? Display shows centiseconds; suitable for training, not lab timing.
  • Save lap data? Copy the lap table manually if you need a log.
  • Pair with other tools? Use with pace and calorie calculators to plan sessions.