20 Minute Timer
Use this 20 minute timer to mark the interval between eye breaks. Start a countdown, pause it when needed and reset it for the next interval.
Time remaining
20:00
Ready when you are.
· Free
Track it in Eye Rest Reminder.
Keep your timer and eye-break schedule private on your device.
How the 20 minute timer supports eye breaks
This 20 minute timer marks the interval between breaks. The 20-20-20 rule says that every 20 minutes, you look at something 20 feet (6 m) away for 20 seconds.
This tool is the 20-minute interval between breaks; a sibling 20-second timer is available at /tools/20-second-timer. It also supports 25, 45 and 60 minute presets, or a custom duration.
Remaining time = duration − (current timestamp − start timestamp) American Academy of Ophthalmology ↗American Optometric Association ↗
20 minute timer FAQ
What is the 20-20-20 rule?
Every 20 minutes, look at something 20 feet (6 m) away for 20 seconds.
Is this a 20-second timer?
No. This tool measures the 20-minute interval between breaks. A sibling 20-second timer is available at /tools/20-second-timer.
Can I use a different duration?
Yes. Choose 25, 45 or 60 minutes, or enter a custom number greater than zero.
Does the timer keep counting in a background tab?
Yes. It derives remaining time from timestamps and refreshes when the page becomes visible again.
Are my settings saved?
No. The timer runs in your browser and does not use accounts or network calls.