An hour is a full block of focused work, a long workout, or a slow-cooked meal. This free 1-hour timer counts down in your browser with a clear display and an alarm, and it stays wall-clock accurate even if the tab is hidden or your laptop sleeps and wakes.
What is a 1 hour timer good for?
- An hour of deep, uninterrupted focus
- Cooking, roasting or baking on a one-hour timer
- A workout, long walk or training session
- Timing an exam, a meeting or a study block
How this 1 hour timer works
Press Start and the countdown runs full-screen in your browser; press it again to pause and resume, hit Reset to return to 1 hour, or +1 min to extend. You can also press the spacebar to start or pause. It is wall-clock accurate, so it stays correct even in a background tab, and it rings when it reaches zero. Need a different length or a stopwatch and date countdown? Open the full timer.
Frequently asked questions
How do I set a one-hour timer?
It is already set — this page is a one-hour countdown, so you only need to press Start. The timer shows hours, minutes and seconds and rings when it reaches zero, and because it tracks the real end time rather than counting ticks, it stays exact even if you switch tabs, minimise the window, or your computer briefly sleeps. If you need a slightly different length, use the +1 min button, or pick another preset below. There is nothing to install and no sign-up.
Does the timer keep accurate time if I switch tabs?
Yes. Instead of counting ticks (which browsers throttle in background tabs), it records the exact end time and works out the remaining time from your clock on every update, so it is always correct. When you return to the tab the display instantly shows the true time left, and the alarm is scheduled through the Web Audio API so it still rings on time even while the tab is hidden.
Will it make a sound when it finishes? Is it free?
Yes to both. When the countdown reaches zero the timer plays an alarm tone and the card flashes with a “Time’s up” message, so you are notified even with the sound off — use the speaker button to mute or unmute. The first time you press Start the browser unlocks audio from that tap, which is why a timer you start yourself can ring later. It is completely free, runs entirely in your browser, needs no sign-up, and nothing is uploaded.