What is the Study Time Calculator?
Starting revision without a plan usually means too much time on easy subjects and too little on hard ones. The study time calculator splits your available hours across subjects according to difficulty.
Enter your exam date, hours per day, rest days and revision days at the end. It shows total hours, hours per subject, minutes per day and the number of focused 50-minute sessions. Use the Online Timer to time each session.
How to use the Study Time Calculator
- Pick your exam date.
- Enter study hours per day and rest days per week.
- Set how many revision days to keep at the end.
- Add each subject and its difficulty.
- Follow the hours and sessions shown for each subject.
Example
30 days before exams, studying 4 hours a day with 1 rest day and 3 revision days gives about 92 hours. A hard subject gets about 31 hours, roughly 80 minutes a day.
Study techniques that work
The 50/10 rule
Study for 50 minutes, then take a 10-minute break. Short breaks keep focus high.
Interleaving
Mix hard and easy subjects on the same day instead of one subject all day.
Active recall
Test yourself with past papers instead of only re-reading notes.
You may also need
People who use the Study Time Calculator often need these related tools too:
- Grade Calculator: Enter each assessment with its weight and score to see your current weighted grade, letter grade and the score you need on the remaining work to hit your target.
- Attendance Calculator: See your attendance percentage and exactly how many classes you can still miss, or must attend in a row, to stay above 75% or 80%.
- Word Counter: Count words, characters, sentences and paragraphs as you type, and see reading time, speaking time and the most-used keywords.
Frequently asked questions
How many hours should I study per day for exams?
Many students manage 4–6 focused hours a day. Quality matters more than total hours.
How does difficulty change the plan?
Hard subjects get three times the weight of easy ones, medium subjects twice.
Why keep revision days?
The last few days are best for past papers and quick revision of every subject.
What is a 50-minute session?
A focused study block followed by a short break, a popular way to keep concentration.
Can I use it for board exams or CSS?
Yes. Add your subjects and exam date; it works for any exam.
Is the Study Time Calculator free to use?
Yes. The Study Time Calculator on Custom Converter is completely free, with no sign-up, no daily limit and no watermark.
Does the Study Time Calculator work on mobile phones?
Yes. It is built mobile-first and works on Android phones, iPhones, tablets and computers in any modern browser, with no app to install.