Online Timer

Presets cover the durations people set most often — 1, 3, 5, 10, 15, 25, 30 and 60 minutes — so a single press starts a timer for tea, a short break, a focus block or a class exercise. For anything else, type hours, minutes and seconds directly; the field accepts a plain duration rather than forcing you through a picker.

While the timer runs, the remaining time appears in the page title as well as on the page, so a pinned tab is still readable from across the room. Pause and resume leave the remaining duration intact, and reset returns to the duration you set rather than to zero.

At zero the timer plays a chime synthesized in the browser with the Web Audio API. There is no audio file to download and no request to a server, which is why the sound is instant and works offline. If you have granted notification permission, a system notification appears as well, so the alert reaches you even when the tab is in the background.

Because the remaining time is computed from the system clock rather than from accumulated ticks, a timer that spent its last ten minutes in a throttled background tab still ends at the right moment instead of finishing late.

A timer can be described entirely by its duration, so the duration lives in the URL: adding a parameter such as a 25-minute value to the address produces a link that opens pre-set and ready to start. That is the practical way to hand a class, a team or a workout partner the same timer without explaining the settings.

The timer is free with no limit on how many you run. Your last duration is remembered in your browser's local storage so the tool opens where you left it; nothing is sent anywhere. When you need to turn time into hours worked rather than count it down, the hours calculator and the timesheet are the tools for that.