Free 20 Minute Timer — 1200 Second Countdown

Twenty minutes is the minimum effective meditation duration according to Harvard research, and the interval recommended by eye doctors for the 20-20-20 rule. Start this countdown and the timer handles everything from progress tracking to the alarm.

Why 20 Minutes Matters

Harvard Medical School researchers found that participants who meditated for 20 minutes daily over eight weeks showed measurable increases in gray matter density in brain regions associated with memory, empathy, and stress regulation. Shorter sessions did not produce the same structural changes, making 20 minutes a threshold worth targeting if meditation is part of your routine.

The 20-20-20 rule for eye strain prevention uses this exact interval: every 20 minutes of screen work, look at something 20 feet away for 20 seconds. Enable the Repeat toggle on this timer and it becomes a continuous eye break reminder that fires every 20 minutes throughout your workday.

For cooking, 20 minutes covers roasted broccoli florets at 220°C (crispy edges, tender stems), steamed basmati rice on the stovetop, or a quick one-pan chicken stir-fry from prep to plate.

Features

Progress bar, 15 alarm sounds, browser tab title countdown, fullscreen mode, repeat toggle, count-up past zero. Choose Meditation Bowl or Gentle Chime as your alarm for meditation sessions.

Other durations: 15 minute timer, 25 minute timer, 30 minute timer.