Study Time Calculator: How Many Hours a Day Do You Need?

Enter the pages or topics to cover, your reading speed, the days left and the revision time you want. The calculator gives the daily study time and the weekly total.

FreeNo sign-upRuns in your browserUpdated 2 Nov 2026
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Estimates only. Check important results before you rely on them.

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How to use this calculator

  1. Enter the total pages or topics in your syllabus.
  2. Enter how many you can finish in an hour.
  3. Enter the days left and any days you will not study.
  4. Add the percentage of extra time you want for revision.

The formula

First reading = Pages ÷ Speed. Revision = First reading × Revision %. Total hours = First reading + Revision. Hours per day = Total hours ÷ (Days left − Days off).

Worked example

450 pages at 6 per hour is 75 hours. Adding 25% revision gives 93.75 hours. Over 26 study days (30 days minus 4 off) you need about 3 h 36 min a day.

Understanding your result

If the daily number is more than you can handle, either start earlier, cut the revision share, or study the high-scoring topics first. The chart shows how your time splits between reading and revision.

When to use it

  • Build a realistic revision plan.
  • See if your syllabus is achievable in the time left.
  • Share the workload across a study group.

Assumptions and limits

Your speed varies by subject, so estimate it from a recent chapter. Breaks within a day are not subtracted.

Frequently asked questions

How do I plan study hours for exams?

Estimate the total hours needed, add revision time, and divide by the number of study days left.

What is a good revision percentage?

Many students plan 20% to 40% of the first-reading time. Adjust for how difficult the subject is.

How do I find my reading speed?

Time yourself on one chapter and divide the pages by the hours taken.

Should I count days off?

Yes, enter days you will not study so the daily load is realistic.

Can I use topics instead of pages?

Yes, as long as the number of topics and your speed in topics per hour match.