Online Stopwatch with Laps

Online stopwatch with laps — free precision timer with lap history for sports, study and cooking. Use the free Online Stopwatch with Laps below — enter your values and get instant results, right in your browser. Logic: elapsed time is measured with the browser high-resolution clock, displayed as MM:SS.cs (minutes, seconds, centiseconds). Each lap stores the split time since the previous lap plus the running total.

How to use the Online Stopwatch with Laps

Whether you are timing sprints, tracking study sessions, testing recipes or running a race, you need a stopwatch that records lap times without fumbling through phone menus. This online stopwatch with laps gives you a big, clear display with hundredths of a second, one-tap lap recording, and a numbered lap list showing each split. It runs entirely in your browser — free, no signup, no app.

  1. Open the Stopwatch tab to see the big 00:00.00 display.
  2. Click Start to begin timing.
  3. Click Lap each time you finish a lap — it is recorded with its number and split time.
  4. Click Pause to freeze the timer, Start again to resume.
  5. Click Reset to clear the display and the lap list for a new session.

Formula

Logic: elapsed time is measured with the browser high-resolution clock, displayed as MM:SS.cs (minutes, seconds, centiseconds). Each lap stores the split time since the previous lap plus the running total.

Worked example

Timing a 400 m run: click Start, click Lap at each 100 m mark. The lap list shows Lap 1: 15.20 s, Lap 2: 16.05 s, and so on, with the total at the bottom. Pause at the finish and Reset before the next runner.

Frequently asked questions

It uses the browser high-resolution timer, accurate to hundredths of a second — plenty for sports, study and cooking.

There is no practical limit; the lap list keeps growing and scrolls as you add more laps.

Browsers may slow background tabs. For critical timing, keep the stopwatch tab visible.

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