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Stopwatch & Timer

Use a precision stopwatch with lap tracking or set a countdown timer — all in your browser with no downloads needed.

00:00:00.000
Stopwatch
LapLap TimeTotal

No laps recorded

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How to use Stopwatch & Timer

  1. Choose Stopwatch or Timer mode.
  2. For stopwatch: click Start, then Lap to record splits.
  3. For timer: set the duration and click Start.
  4. Use Reset to clear and start over.

Stopwatch & Timer అంటే ఏమిటి?

This tool provides two timing modes: a stopwatch that counts up with lap tracking, and a countdown timer that alerts when time runs out. Both offer millisecond precision.

The stopwatch records lap times so you can track intervals. The countdown timer plays an audible alert when it reaches zero.

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FAQ

How accurate is the stopwatch?
The stopwatch uses performance.now() for sub-millisecond precision. Display shows centiseconds (hundredths of a second).
Does the timer work if I switch tabs?
Yes — the timer continues running even if you switch browser tabs. It uses the page's background timing to stay accurate.

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Author

OH
Omar Hassan"The Number Cruncher"

Engineer & Unit Conversion Specialist

Omar is a mechanical engineer by training and a unit-conversion enthusiast by passion. He has built calibration systems for aerospace and automotive manufacturers and knows firsthand how a single decimal error can cost millions in rework. His mission is to make every conversion instant, accurate, and accessible to everyone, whether they are a student, tradesperson, or practicing engineer, with no advanced degree required.

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