How to use the 20-20-20 eye break schedule
Enter a work start time and total work hours. The page lists one break after each completed 20 minutes of work, with the break count, the total rest time at 20 seconds a break, and the work end time. Clock times use a 24-hour format with two digits, and anything past midnight carries a day marker. The list runs to 48 breaks and a longer entry returns a message instead.
What 20-20-20 means
The recommendation is to look at something about 20 feet (6 m) away for 20 seconds every 20 minutes. The three twenties are the interval, the distance and the duration. This page turns the interval and the duration into a schedule; the distance is something you have to find in your own workspace.
How much this reduces eye strain could not be confirmed in an authoritative source, so no effect size is quoted here. The schedule only makes the recommendation easier to follow; it guarantees nothing. Blurred vision, pain, a sudden increase in floaters, or flashes of light need an eye examination regardless of your break schedule (as of October 2026).
Frequently Asked Questions
Every 20 minutes, look at something about 20 feet (6 m) away, for 20 seconds. This page schedules the interval and the duration and leaves the distance to your workspace.
No authoritative figure for the effect size could be confirmed, so the page quotes no percentage and only builds the schedule.
Yes. Break times after midnight carry a day marker. The list holds up to 48 breaks, which covers 16 hours.