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Spacing calculator

The single highest-return change most students can make is not studying more. It is moving the studying they already do further apart.

Give this your exam date and it works out when to review, then hands you a calendar file. Each review is a closed-book attempt at recall, not a reread — that part matters more than the dates.

Spacing calculator

This works out when to review something so that it sticks, instead of leaving it to chance. About 30 seconds

  1. Enter your exam date, and the topic if you want it named.
  2. Get back a handful of review dates, spread out on purpose.
  3. Keep them: email them to yourself, tap a date to add it to your calendar, or copy them.

Studying the same material further apart beats studying it more. Each review is a closed-book recall, not a reread — put the material away first.

Cepeda and colleagues (2008) found the best gap between study and review is a proportion of the time until you are tested — around a quarter of it when the exam is days away, closer to a tenth when it is months away. This works that out for you, then widens each following gap.