Online Timer & Stopwatch
A free countdown timer with alarm and a stopwatch with laps — works in any browser, no app needed.
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Runs entirely in your browser. Your files and text are never uploaded to our server.
- Instant results
- 100% free
- No sign-up
- Private
Online Timer & Stopwatch gives you two tools in one: a countdown timer that sounds an alarm when time is up, and a stopwatch that measures elapsed time to a hundredth of a second, with laps. Use the quick buttons for common times like 5, 10 or 25 minutes, or set any time up to 99 hours.
The remaining time also shows in the browser tab, so you can keep working in another tab and still see the countdown. Everything runs on your device with no sign-up. Pair it with the Typing Speed Test for timed practice, or use Spin the Wheel to pick who goes next.
More about Online Timer & StopwatchHow to use, good to know & FAQ
How to use Online Timer & Stopwatch
- Choose Timer or Stopwatch at the top.
- For the timer, set hours, minutes and seconds or tap a quick-start time; for the stopwatch, press Start.
- Use Pause, Reset or Lap as needed — the timer beeps when it reaches zero.
Good to know
- Press the Space bar to start or pause (when you are not typing in a box).
- The alarm uses your device’s sound. Turn up the volume and keep the tab open.
- Some phones pause web pages when the screen is locked, so keep the screen on for long timers.
- Timing uses your device clock, so it stays accurate even if the page is busy.
Frequently asked questions
Will the timer ring if I switch tabs?
Yes. The countdown keeps running in the background tab and the alarm plays when it ends. The tab title shows the remaining time.
Can I time laps?
Yes. In Stopwatch mode, press Lap to record split times. You can copy all lap times with one click.
Is there a 25-minute Pomodoro timer?
Yes. Tap “25 min” for a focus session, then “5 min” for a short break.
Does it work offline?
Once the page has loaded, the timer and stopwatch keep working without an internet connection.
When to use Online Timer & Stopwatch
- Study sessions and Pomodoro focus blocks
- Cooking, workouts and rest intervals
- Timing presentations, quizzes and classroom activities
- Measuring how long a task really takes