Countdown Timer
Online timer with alarm, presets and Pomodoro mode. Free, no sign-up, works in your browser.
05:00
h min s
🔒 100% private — processing happens in your browser. Nothing is uploaded.
How to use the online countdown timer
- Set hours, minutes and seconds, or click a preset.
- Press Start — the time also shows in the browser tab.
- An alarm sounds when time is up. Turn on Pomodoro mode for focus sessions with automatic breaks.
Use it for cooking, exams, presentations, workouts or focused work. The timer is based on the clock rather than counting ticks, so it stays accurate even when the tab is in the background. Full-screen mode turns any screen into a big classroom or meeting timer.