1 Hour Timer

About this one hour timer

This one-hour countdown runs entirely in your browser. A full hour for deep work sessions, long meditations, or extended practice. There is nothing to install, nothing to sign up for, and no data is uploaded when you start, pause, or reset.

How long is 1 hour? 60 minutes, or 3,600 seconds. The hour is the standard unit of a calendar, which makes a 1 hr timer a natural fit for a meeting-length work block, a practice session, or a slow-cooked dish.

A one-hour timer is a useful anchor for a deep work block, a long study session, or an extended meditation. Many knowledge workers run two or three of these back to back with short breaks in between.

Treat the end-of-timer beep as a forced checkpoint: step away from the screen, drink water, move your body, and then decide whether to start another hour. The productivity guide covers several ways to structure a multi-hour day.

How to use this timer

• Press Start (or the spacebar) to begin the countdown.
• Press Pause (or the spacebar again) to hold the current time.
• Press Reset (or the R key) to return to 1:00.
• When the timer ends, a short tone plays. Click, tap, or press any key to stop it.
• Use the sound toggle to mute the alert — your preference is remembered on this device.

Tips for accurate timing

• Keep this tab visible. Modern browsers slow down background tabs to save power, which can delay the end alert.
• On mobile, keep the screen awake or plug the device in for long sessions.
• For anything safety-critical, use your device's built-in system timer rather than a web page.

Related timers: 30 minute timer, 100 minute timer for a longer stretch, or 2 hour timer.

Looking for a different duration? Browse the TimerZen home page or type any whole-number duration into the URL (for example, /45-minute-timer/, /90-second-timer/, or /2-hour-timer/).

Last reviewed on April 24, 2026.