Countdown Timer
Last updated: June 16, 2026Set a timer with an alarm.
Countdown Timer is a free online tool to set a timer with an alarm. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
How to use Countdown Timer
The Countdown Timer counts down from any duration and sounds an alarm when it reaches zero, with one-tap presets for common times. Perfect for cooking, workouts, study and focus. Free and runs entirely in your browser.
Read the full guide: How to Set an Online Timer with Alarm (Free)
- 1Set hours, minutes and seconds (or tap a preset).
- 2Press Start.
- 3An alarm sounds when the timer hits zero.
Alarm at zero
A clear beep tells you when time's up.
Quick presets
One-tap 1, 3, 5, 10, 15 and 25-minute timers.
Free & private
Runs on your device with no sign-up.
Set a kitchen timer for cooking
Need to boil eggs, steep tea or check the oven? Tap a 1, 3, 5, 10 or 15-minute preset and press Start, or type an exact time like 8 minutes 30 seconds and hit Set. A clear beep sounds the moment it reaches zero and the display turns green, so you can step away from the stove without watching the clock.
Time workout intervals and rest
Run HIIT rounds, hold a plank or track rest between sets straight from your phone's browser. Enter seconds directly for short bursts, or use the 1, 3 and 5-minute presets for circuits. Pause holds the exact remaining time when you need a breather, and the alarm beeps at zero to start your next interval, hands-free.
Run a fixed exam or focus sprint
Practising a timed test or doing a deep-work block? Set custom hours, minutes and seconds, like 1:30:00 for a mock exam, then press Start. It tracks the real end time, so the countdown stays accurate even in a background tab, and beeps when time is up. For repeating focus and break cycles, try the Pomodoro Timer instead.
Countdown Timer — frequently asked questions
Will the alarm sound if the tab is in the background?
In most browsers, yes — keep the tab open. Some mobile browsers throttle background audio, so leaving the tab visible is most reliable.
Can I set a 5 or 10 minute timer quickly?
Yes — tap the preset buttons for instant 1, 3, 5, 10, 15 or 25-minute timers.
Is it free?
Yes, completely free.
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