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?
The one-hour timer is already set — this page is a fixed 60-minute 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 — the 1 hour timer stays wall-clock accurate in a background tab. 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 the figure on screen is always correct. When you return to the tab the display instantly shows the true time left. The alarm tone is generated with the Web Audio API and plays when the countdown reaches zero with the page on screen, so keep the tab visible if you need the sound at the exact second.
Will it make a sound when it finishes? Is it free?
Yes to both — the 1 hour timer rings at zero and is completely free. When the countdown reaches zero it plays three short rising tones 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 runs entirely in your browser, needs no sign-up, and nothing is uploaded.
What happens if I reload or close the page mid-countdown?
Reloading or closing the page ends the one-hour countdown — this preset timer stores nothing, so a fresh load starts again at 1:00:00. Pausing and resuming inside the same tab is safe, and the +1 min button extends a running countdown by 60 seconds without restarting it. Pressing R on the keyboard resets the clock to a full hour at any point. The full timer on the main timer page is the one that saves a running countdown across a refresh.