Boiling an egg
Enter 0 hours, 9 minutes, 0 seconds for a hard-boiled egg, or choose the 3 min preset for a soft one.
Countdown Timer
Count down from any time up to 99 hours, with quick presets and a beep when time is up.
Time remaining
05:00
Runs in your browser — nothing you enter is sent to a server.
How the Countdown Timer works
Enter hours, minutes and seconds — or pick a preset from 1 minute to 1 hour — and select Start countdown. You can pause and resume at any time; changing the length starts the countdown over. When it reaches 00:00 the timer beeps three times and shows a message, and while it runs the remaining time also appears in the browser tab's title.
The timer measures time from your device's clock rather than counting ticks, so it stays accurate even if the page is slowed down in a background tab. The longest countdown is 99 hours, 59 minutes and 59 seconds.
Examples
A 90-minute exam practice
Enter 1 hour 30 minutes. The display shows 1:30:00 and counts down to 00:00, with the time left in the tab title while you work in another tab.
Frequently asked questions
Will the alarm sound if the tab is in the background?
Yes, as long as the tab stays open and your device isn't muted. Browsers slow down timers in tabs that have been hidden for several minutes, so the beep can come a little late there — up to about a minute in Chrome — but the time shown is always correct when you return.
Why don't I hear a beep?
Check that Beep when time is up is ticked and that your device volume is on. Phones in silent mode may mute web audio.
Does the timer keep running if I close the page?
No. Everything runs in this page, and nothing is saved or sent anywhere, so closing or reloading the page stops the timer.
Related tools
Stopwatch
Time anything to a tenth of a second and record laps, with the fastest and slowest marked.
Productivity Tools
Pomodoro Timer
Work in focused 25-minute sessions with short breaks and a longer break every fourth session.
Productivity Tools
Time Calculator
Add or subtract hours, minutes and seconds, and convert the result to total hours, minutes or seconds.
Calculators