23 Minute Timer

About this twenty-three minute timer

This twenty-three-minute countdown runs entirely in your browser. A solid block for deep work, a full workout circuit, or a longer meditation. There is nothing to install, nothing to sign up for, and no data is uploaded when you start, pause, or reset.

A twenty-three-minute timer covers most single-task work sessions. It is long enough for real progress on a piece of work but short enough that your brain does not start wandering on the way through. It also maps neatly onto common workout intervals, household tasks, and mid-length meditations.

Before starting, write down in one sentence what you plan to achieve in the block. When the alarm sounds, pause and compare the result with what you wrote — it is a fast, honest way to learn how long your tasks actually take.

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 23:00.
• 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: 15 minute timer or 30 minute 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.