Question 1

How do I use the online stopwatch?

Accepted Answer

Press the big Start button (or hit Space on your keyboard) to begin timing. Press Lap while the stopwatch is running to record a split time. Press Stop to pause, then Start again to resume from the same elapsed time. Press Reset to clear everything.

Question 2

What are lap times vs split times?

Accepted Answer

Lap time is the duration of a single segment (e.g. one mile of a multi-mile run). Split time (also called cumulative time) is the total elapsed from the very start. The fastest lap and slowest lap are highlighted automatically so you can pace yourself.

Question 3

How accurate is the stopwatch?

Accepted Answer

The stopwatch uses the browser's high-resolution performance API and is accurate to a few milliseconds. That is more than enough for sports, study sessions, cooking, and most timing needs. For laboratory-grade timing, you would need a dedicated hardware device.

Question 4

Can I copy or share my results?

Accepted Answer

Yes. After recording laps, click the Copy button to copy a table of lap, split, and total times to your clipboard, formatted for easy pasting into spreadsheets, chat apps, or notes.

📋 Laps fastest in green, slowest in red