Online Stopwatch
Centisecond-precision stopwatch with lap split tracking. Start, stop, record laps, and reset โ runs entirely in your browser.
How to Use the Stopwatch
Click Start to begin timing. The display updates smoothly to the centisecond (hundredths of a second). Use Lap to record split times without stopping the clock โ each lap shows both the split duration and total elapsed time in a table below.
Click Stop to freeze the display. You can then Resume to continue from the same point, or Reset to clear everything and start fresh.
Common Uses for Stopwatches
Sports & Athletics
Track sprint times, swim splits, mile paces, and race results. The lap feature lets coaches record each athlete's individual splits for analysis.
Workouts & HIIT
Time your intervals, rest periods, and total workout duration. Use lap splits to ensure consistency across sets โ if your 5th rep takes 50% longer than your 1st, it's time to reduce weight.
Cooking
Time recipes that need precise timing โ soft-boiled eggs (6 minutes), searing steaks (3 minutes per side), or reducing sauces ("cook for 8โ10 minutes, stirring occasionally").
Games & Competitions
Time board game turns, trivia rounds, debate speeches, or speed-solving puzzles. The digital display eliminates disputes over timing.
Stopwatch vs. Timer vs. Countdown
| Tool | Direction | Best For |
|---|---|---|
| Stopwatch (this page) | Counts UP from 0 | Measuring elapsed time / laps |
| Timer | Counts DOWN from duration | Cooking, workouts, exams |
| Countdown Timer | Counts DOWN to date/time | Events, holidays, deadlines |
Related Tools
- Timer โ Count down from hours, minutes, and seconds.
- Countdown Timer โ Count down to any future date.
- Time Duration Calculator โ Calculate duration between two times.
- Time Card Calculator โ Track work hours and payroll time.