20 Minute Study Timer — Free Online Tool

What this one is for

Good for problem sets
Five minute break afterwards
Two blocks make a solid session

Twenty minutes suits problem sets, where the work comes in discrete pieces. You can finish two or three questions and stop cleanly, rather than abandoning something halfway. It opens at 20:00; change that with the chips under the dial.

Worth knowing

Twenty minutes is roughly two past-paper questions at exam pace.
Long enough for a problem set, short enough to hold full attention.
Younger students usually hold twenty better than twenty-five.

Getting the most from the 20 minute study timer

Choose the length before you open the bookDeciding mid-session is how study time leaks away. Pick it now and the only remaining question is which topic.
Close everything that is not the subjectOne tab, one book, phone in another room. The block is short enough that nothing needs answering inside it.
Recall before you re-readSay or write what you remember first, then check. Re-reading feels productive and is the weakest way to revise.

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Questions people ask

Is 20 minutes better than 25 for studying?

For younger students and harder material, often yes. Attention is easier to sustain, and two twenty minute blocks with a break usually beat one forty minute sitting.

Should I study in one block or several?

Several, with breaks. Spacing the same total time across a week produces better recall than one long sitting.

Is the 20 minute study timer free to use?

Yes, with no account and no limit. Nothing about your session is stored on a server.