Online Timer
Set a countdown in hours, minutes and seconds with quick presets, a loud alarm and a full-screen display. Keeps accurate time even in a background tab. Includes a stopwatch and pomodoro timer.
How it works
- 1
Set the time
Type hours, minutes and seconds, or tap a preset.
- 2
Start
The countdown shows in large digits — go full screen for a classroom or meeting.
- 3
Keep working
It keeps accurate time in a background tab and shows what's left in the tab title.
- 4
Hear the alarm
An alarm sounds when time is up; turn on notifications to see it from other tabs.
Common uses
- Time tests, activities and breaks in a classroom.
- Keep meetings, presentations and speeches on schedule.
- Set a cooking, workout or study timer without installing an app.
About the Online Timer
Set a countdown in hours, minutes and seconds with quick presets, a loud alarm and a full-screen display. Keeps accurate time even in a background tab. Includes a stopwatch and pomodoro timer.
Instead of counting seconds, the timer compares against the system clock, so it stays accurate even when a background tab is slowed down. The alarm is scheduled on the Web Audio clock the moment you press Start.
Online Timer is part of a free, privacy-first toolkit. It opens instantly and saves to your browser's own storage, so there's no account to create and nothing is sent to a server.
Because online timer works without any sign-up or installation, you can use it as often as you like and it's always available — on desktop or mobile, and even offline.
Explore more productivity tools, or try Online Stopwatch · Pomodoro Timer.
One-click presets: Online Stopwatch · Pomodoro Timer.
Related tools
Related guides
Online Timer — FAQ
Yes. Time is tracked against the clock rather than by counting ticks, and the alarm is scheduled with the browser's audio system so it still sounds on time. Keep the tab open.