Online Timer - Free timer with custom sound alerts
This online timer sets precise durations, alarm sounds, and multiple countdowns in your browser — no download, no account. Works on desktop and mobile for work, workouts, cooking, and study. Need elapsed time instead? Use the online stopwatch.
Run several timers at once
Each timer keeps its own name, sound, and progress ring. Enable browser notifications, watch the soonest countdown in the tab title, or float one with Picture-in-Picture.
Saved on this device
Settings and running timers autosave in local storage — refresh or return later and they pick up where you left off. Nothing is uploaded.
How to use this online timer
1Set a duration
Choose hours, minutes, and seconds, or tap a preset such as 1 minute or 25 minutes.
2Start the countdown
Press Start or Space. Pause, go fullscreen, or float Picture-in-Picture while it runs.
3Hear the alert
When time is up, stop the sound with one tap. Notifications and the tab title show remaining time if you leave the page.
What’s included
Multiple simultaneous timers
Custom alarm sounds
Fullscreen mode
Picture-in-Picture
Browser notifications
Shareable timer links
Automatic autosave (local storage)
Presets for 5, 10, 30 minutes and a built-in 25-minute Pomodoro
An online timer is a browser-based tool that counts down from a set time in hours, minutes, and seconds without requiring installation or registration.
Yes, you can choose from multiple alarm sounds and set how long the sound plays when the timer finishes.
Yes. Your time, sound, and title settings are saved automatically, and any timer you have running or paused is saved too — refresh or come back later and it keeps counting down exactly where it left off.
Yes. Set a duration and click Start to add it to your list — each timer runs independently with its own name, sound, and progress ring, so you can time several things at once (for example, dinner in the oven and a load of laundry).
Yes. Click the bell icon to enable browser notifications — you'll only be asked for permission once, and you can turn it off again at any time. You can also float any timer in a small always-on-top window using the Picture-in-Picture button (supported in Chromium-based browsers).
Yes, the online timer works smoothly on both desktop and mobile browsers.
A timer counts down from a set duration, while a stopwatch measures elapsed time from zero.
Yes. Click the fullscreen icon on any running timer to switch to a distraction-free, full-screen view — click again or press Escape to exit.
Yes. Use the built-in 25-minute Pomodoro preset under Quick Start, or set any custom duration to fit your own focus-and-break routine.
Yes. Save any duration, title, sound, and ring-length combination as a named preset — it appears as a one-click chip below the form, so a routine like "Tea steep — 4 min" doesn't need to be re-entered every time. Presets can be renamed or removed at any point.
Yes. Each timer card has a share button that copies a link pre-loaded with that exact duration, title, and sound — opening it on another device starts the same timer immediately, no setup needed.