Tan Phat Digital

Stopwatch Online Free

Precise stopwatch with lap recording

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Stopwatch Online Free - Precise Timer with Lap Recording

Free online stopwatch accurate to 1/100th of a second. Start, pause, reset, and record lap times. Shows split time (time since last lap) and cumulative time for each lap. Works entirely in your browser — no install needed. The timer continues running even when you switch to other browser tabs. Perfect for timing workouts, sports events, cooking, presentations, and any activity that needs precise timing.

Key Features

Accurate to 1/100th of a second (10ms intervals)
Lap recording with split and cumulative times
Start, pause, and reset controls
Continues running when switching tabs
Unlimited lap recording
Clean, large display for easy reading
Works offline after page load
100% free, no registration required

When to Use an Online Stopwatch?

An online stopwatch is always available — no app download, no battery drain, no searching for a physical stopwatch. Use it for timing workout intervals and rest periods, recording lap times for running or swimming, timing cooking steps, measuring presentation or speech duration, timing game rounds, or any activity where you need to know exactly how long something takes. The lap feature is especially useful for tracking splits in running or swimming.

Benefits

  • Precise timing for sports and workouts
  • Track lap times for running, swimming, or cycling
  • Time presentations and speeches accurately
  • No app download or installation needed
  • Works on any device with a browser
  • Continues timing even when switching tabs

How to Use the Stopwatch

  1. 1Click 'Start' to begin timing
  2. 2Click 'Lap' to record a lap time while the timer continues
  3. 3Click 'Pause' to pause the timer
  4. 4Click 'Start' again to resume from where you paused
  5. 5View lap times below — each shows split time and cumulative time
  6. 6Click 'Reset' to clear the timer and all lap times

Understanding Split Time vs Cumulative Time

Each lap shows two times: split time (time since the previous lap) and cumulative time (total time elapsed). For example, if Lap 1 is at 1:30 and Lap 2 is at 3:00, the split time for Lap 2 is 1:30 (time for that lap) and the cumulative time is 3:00 (total elapsed). Split times help you compare individual lap performance, while cumulative times show your overall progress.

Frequently Asked Questions

How accurate is this stopwatch?

The stopwatch updates every 10ms (1/100th of a second), which is accurate enough for most timing needs.

Does it work offline?

Yes, once the page is loaded, the stopwatch works entirely in your browser without an internet connection.

Can I record unlimited laps?

Yes, there is no limit on the number of laps you can record. All laps are displayed with their split time and cumulative time.

Will the timer stop if I switch tabs?

No, the timer continues running even if you switch to another tab. The browser keeps the interval running in the background.

Can I save my lap times?

Currently the tool does not have an export feature. You can manually copy the lap times from the screen. A copy/export feature may be added in a future update.

Related Keywords

stopwatch onlineonline timerlap timerfree stopwatchcountdown timerinterval timer onlinesports stopwatchprecision timer online

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