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Free Online Stopwatch

Accurate timing with lap counter

00:00:00.000
Keyboard Shortcuts
Start / Pause Space
Record Lap L
Reset R
00:00:00.000

How to Use This Stopwatch

Our free online stopwatch is simple and intuitive to use. Click the Start button to begin timing, the Lap button to record split times, and the Reset button to start over. You can also use keyboard shortcuts for hands-free operation.

Features of Our Online Stopwatch

Our stopwatch comes with professional features for accurate time tracking:

  • Millisecond Precision: Accurate timing down to milliseconds (00:00:00.000).
  • Lap Timer: Record unlimited lap times while the stopwatch continues running.
  • Split Times: View both lap times and total elapsed time simultaneously.
  • Fullscreen Mode: Expand to fullscreen for easy viewing from a distance.
  • Keyboard Shortcuts: Use spacebar to start/stop and 'L' for lap times.
  • Export Lap Data: Copy or export all recorded lap times.
  • 100% Free: No ads, no signup, works offline after first load.

Stopwatch vs Timer - What's the Difference?

Feature Stopwatch Timer
Direction Counts UP from zero Counts DOWN to zero
Best For Measuring duration Setting time limits
Example Uses Races, workouts, experiments Cooking, presentations, breaks

Common Uses for a Stopwatch

  • Sports Timing: Track lap times for running, swimming, cycling
  • Cooking: Monitor cooking and resting times precisely
  • Productivity: Time work sessions and breaks
  • Science Experiments: Record precise reaction times
  • Gaming: Speedrun timing and practice
  • Presentations: Keep speeches within time limits

Keyboard Shortcuts

For convenience, you can control the stopwatch using your keyboard:

  • Space: Start or pause the stopwatch
  • L: Record a lap time
  • R: Reset the stopwatch

These shortcuts work even when the stopwatch is in fullscreen mode, making it perfect for presentations or when you need to control timing from a distance.

Frequently Asked Questions

How accurate is this stopwatch?

Our stopwatch is accurate to milliseconds (1/1000th of a second). It uses your device's system clock for timing, which is highly accurate for most purposes including sports timing and cooking.

What's the difference between a stopwatch and a timer?

A stopwatch counts up from zero, measuring elapsed time. A timer counts down to zero from a set time. Use a stopwatch to see how long something takes; use a timer to be alerted when time is up.

Can I use keyboard shortcuts?

Yes! Press Space to start/pause the stopwatch, 'L' to record a lap time, and 'R' to reset. These shortcuts work even when the stopwatch is in fullscreen mode.

Can I export my lap times?

Yes! After recording laps, click the 'Export CSV' button to download your lap times as a CSV file. This is perfect for tracking workout times, race results, or experiment data.

Does the stopwatch work offline?

Once loaded, the stopwatch continues working even if you lose internet connection. However, you'll need to be online to initially load the page.