Online Timer
A simple, full-screen countdown timer with quick presets, a custom duration and an alarm when time is up. Free and runs in your browser.
A clean, accurate countdown timer that runs entirely in your browser, nothing is uploaded.
About Online Timer
The online timer counts down any duration right in your browser, no app or install. Start from a quick preset or set a custom time in hours, minutes and seconds, add a label like “Tea break”, and hit Start. A full-screen mode makes it readable across a room.
Timing is anchored to a timestamp rather than counting ticks, so the countdown stays accurate even if the tab is in the background. When time is up, an alarm sounds, optionally repeating until you stop it, and the browser tab title flashes “Time’s up!” so you notice from another tab.
Pause, resume and reset controls cover interruptions, making it a free everyday timer for cooking, workouts, study sprints, meetings and classroom activities.
How to use Online Timer
- Pick a quick preset or enter a custom duration in hours, minutes and seconds.
- Optionally add a label and enable “Repeat the beep until I stop it”.
- Press Start: pause, resume or reset whenever you need.
- Switch to fullscreen for a large, glanceable display.
- When the alarm rings, hit Stop alarm to silence it.