20-20-20 Rule Timer — Free Online Eye Break Reminder for Digital Eye Strain

What is the 20-20-20 rule?

The 20-20-20 rule is the eye-care habit eye doctors recommend for anyone who works on screens: every 20 minutes, look at something about 20 feet (~6 meters) away for at least 20 seconds. Staring at a monitor locks your eye's focusing muscle at close range and cuts your blink rate by more than half — the two biggest drivers of digital eye strain (also called computer vision syndrome). A short distance break relaxes that muscle and lets your eyes re-moisten. This free 20-20-20 timer automates the whole thing: work for 20 minutes while the tomato's energy drains, then rest your eyes for 20 seconds when the window opens. Repeat, and your eyes make it to the end of the day.

Does the 20-20-20 rule really help with eye strain?

Yes — it's the standard advice for tired, dry, or blurry screen eyes. Symptoms of computer vision syndrome (dry eyes, headaches, blurred vision, neck tension) build up quietly over long focus sessions, and regular 20-second distance breaks are the simplest proven counter. This eye break timer makes the habit stick: the mascot wilts as your eyes tire, the window break forces a real pause, and the whole thing loops forever with nothing to configure. No accounts, no stats, no tracking — just open the page and rest your eyes.

How to use this 20-20-20 eye timer

⌨️ Keyboard shortcuts: Space — play / pause  ·  → — skip to the break.

Press play and work. The tomato's energy bar drains over 20 minutes — when the window opens, look at the farthest point you can see until the ring finishes, blink slowly, drop your shoulders. Snooze once if you're mid-thought; skip if you must, but your eyes keep the tired. Need a different rhythm? The Custom Timer button lets you set your own work, break, and snooze lengths. Pair it with the to-do list above to give each 20-minute push a target, or add background sound from the Ambience Studio.