Study Time Calculator

Q: How many hours should I study per day?

3–6 focused hours a day is sustainable for most students.

Q: How long before an exam should I start studying?

4–8 weeks for major exams; 1–2 weeks of spaced practice for a single test.

Q: Is the Pomodoro technique effective?

Many students find short timed sessions with breaks help focus and avoid burnout.

Turn “I have a month until exams” into a real plan. Enter the days you have, how long you can study each day, your rest days and the number of subjects, and get the total study hours, the time for each subject and a revision block before the exam.

Hours per subjectRevision bufferPomodoro sessionsLast updated: November 3, 2026

Plan your study time

Days until the exam

days

Study hours per day

hours

Rest days per week

days

Number of subjects

Time kept for final revision

Reserved for the last stretch before the exam

How the plan is worked out

Study days and hours

Study days = days × (7 − rest days) ÷ 7 · Total hours = study days × hours per day

Learning vs revision

Revision = total × revision% · Per subject = (total − revision) ÷ subjects

Give harder or higher-credit subjects a bigger share by counting them twice in the number of subjects.

Pomodoro sessions

Sessions per day = hours per day × 60 ÷ 30

A classic Pomodoro is 25 minutes of focus plus a 5-minute break.

Worked example: 30 days, 4 hours a day, 1 rest day, 5 subjects

Study days = 30 × 6 ÷ 7 ≈ 26
Total = 26 × 4 = 104 hours
Revision (20%) = 20.8 hours, about the last 5 study days
Per subject = 83.2 ÷ 5 = 16.6 hours

Study techniques that work

Active recall: test yourself with questions and flashcards instead of re-reading.
Spaced repetition: revisit each topic after 1 day, 3 days, a week and two weeks.
Interleaving: mix subjects within a day rather than one subject all week.
Past papers: do them under timed conditions in your revision block.
Sleep: 7–9 hours a night helps you remember what you studied.

Frequently asked questions

How many hours should I study per day?

For most students, 3–6 focused hours a day is sustainable during exam preparation. Quality and regular breaks matter more than long sessions.

How long before an exam should I start studying?

For major exams, start 4–8 weeks ahead. For a single test, 1–2 weeks of spaced practice is usually better than cramming.

Is the Pomodoro technique effective?

Many students find short, timed sessions with breaks help them focus and avoid burnout, especially for subjects they find hard to start.

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A plan is a guide; adjust it to your syllabus and how quickly you learn each subject.