A full-screen online stopwatch with laps, and a countdown timer with an alarm.
Runs entirely in your browser — no sign-up, no ads in the way.
What is an online stopwatch and timer?
It is a free browser-based stopwatch and countdown timer needing no sign-up. The stopwatch counts up with hundredths of a second and stores laps as you record them, while the timer counts down and sounds a short beep when it reaches zero. Use the stopwatch to time events and laps, or switch to the timer to count down with an alarm.
Understanding your result
The stopwatch counts up with hundredths of a second and stores laps; the timer counts down and sounds a short beep when it reaches zero.
How to use this tool
- Choose Stopwatch or Timer at the top.
- For the timer, set minutes and seconds.
- Press Start; use Lap (stopwatch) or Reset any time.
About the Stopwatch & Timer
A simple, accurate online Stopwatch & Timer. Use the stopwatch to time events and record laps, or switch to the timer to count down with an alarm when time’s up.
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Frequently asked questions
Will the alarm sound if I switch tabs?
The countdown keeps running, and the beep plays when you return if the browser paused background audio. Keep the tab active for the most reliable alarm.