45 minute timer
One click on start counts down 45 minutes and sounds an alarm at zero.
Forty-five minutes: a school lesson, one half of football or a long focus block.
45:00
⏰ Time's up — the alarm stops by itself.
More timers
A free countdown timer that just works
This timer runs entirely in your browser — nothing to install, no account, no ads blocking the screen. Start it, switch tabs, and the remaining time keeps counting in the tab title; when it reaches zero you hear a clear alarm tone. A running timer even survives an accidental reload.
Use the quick presets below for common durations, or type any combination of hours, minutes and seconds. On a phone, add this page to your home screen to keep a full-screen timer one tap away.