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Minutes per mark: how to plan your time in an exam

6 min read
A student writing on a paper with a pencil at a wooden desk
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The short answer

Minutes per mark is the time you have for writing divided by the total marks. Take the exam length, subtract the time you want at the end for checking, and divide by the marks. On a CBSE 3-hour, 80-mark paper, keeping 15 minutes for checking leaves 165 minutes: 2.06 minutes a mark, so about 2 minutes for a 1-mark question and 10 minutes 19 seconds for a 5-mark one. Multiply any question's marks by that figure to get its time.

Work out your minutes per mark

An exam paper tells you two things that matter for pacing: how long you have and how many marks there are. Put them together and you get a single number you can use for every question on the paper — minutes per mark.

The formula

Minutes per mark = (exam length − checking time) ÷ total marks

The checking time is the few minutes you keep back at the end to read your answers again. It comes off first, because it is not time for earning marks. Everything that is left is shared out by marks.

Then, for any question:

Time for a question = its marks × minutes per mark

That is the whole method. The exam time calculator does both steps, and with sections added it turns them into clock times.

Worked examples

Each row keeps the checking time shown back from the end. Times per question are rounded to the second.

Paper Marks Kept for checking Minutes per mark 1-mark question 5-mark question
1 hour 40 5 min 1.38 1 min 23 s 6 min 53 s
1½ hours 60 10 min 1.33 1 min 20 s 6 min 40 s
2 hours 80 10 min 1.38 1 min 23 s 6 min 53 s
3 hours (CBSE) 70 15 min 2.36 2 min 21 s 11 min 47 s
3 hours (CBSE) 80 15 min 2.06 2 min 4 s 10 min 19 s
3 hours 100 15 min 1.65 1 min 39 s 8 min 15 s

Notice how close the 1-hour and 2-hour papers are: both give 1.38 minutes a mark. The length of the paper matters less than the ratio of time to marks.

Reading time is not writing time

Some papers give a reading period before writing starts. CBSE board exams are the familiar example: the question paper is handed out at 10:15, students read it for 15 minutes without writing, and the 3 hours of writing run from 10:30 to 1:30. That reading time is extra, so it does not come into the calculation.

Some school exams work the other way, with reading inside the stated length. Then it is time you cannot spend writing, and it comes off before the division, like checking time. The calculator has a switch for each.

How to use the number in the exam

Minutes per mark is most useful turned into something you can check at a glance.

  • Write the finish-by times down. When the paper arrives, note on your rough sheet the time each section should be done by. “Section C by 12:09” is easier to check mid-paper than “37 minutes for section C”.
  • Move on when a question’s time is up. A half-finished answer that has had its minutes is usually worth leaving: the next question’s first marks come faster than this one’s last. Mark it and come back in your checking time.
  • Bank the quick ones. A 1-mark MCQ you can answer in thirty seconds leaves time in hand. Do not spend it on the next MCQ; spend it on the long answers, where marks are slower to earn.

Keep time for checking, but not too much

Ten to fifteen minutes on a 3-hour paper is common advice, and less on a short test. It is your choice, not a rule. Too little and careless slips stay in; too much and every question is squeezed. On a CBSE 80-mark paper, the difference between keeping no time and keeping 15 minutes is 2.25 against 2.06 minutes a mark: about 11 seconds less per mark, and a full quarter of an hour at the end.

Practise against a real clock

Pacing is learned, not worked out on the day. In a mock paper, run the exam clock at the real length, keep your printed plan beside you, and check yourself against it at the end of each section. After two or three papers, the plan stops being a sheet of numbers and becomes a feel for how long a 5-mark answer takes.

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  • Studying

Questions people ask

How do you calculate time per mark in an exam?

Subtract the checking time you want from the exam length, then divide by the total marks. A 2-hour, 80-mark paper with 10 minutes for checking gives 110 ÷ 80 = 1.38 minutes a mark.

How many minutes per mark in a CBSE board exam?

On an 80-mark, 3-hour paper: 2.25 minutes a mark if you use the whole 3 hours, or 2.06 if you keep 15 minutes for checking. On a 70-mark paper: 2.57 or 2.36. The 15 minutes of reading before the paper is extra.

How long should I spend on a 5-mark question?

Five times your minutes per mark. On a CBSE 80-mark paper with 15 minutes for checking that is about 10 minutes 19 seconds; on a 1-hour, 40-mark test with 5 minutes for checking, about 6 minutes 53 seconds.

Should reading time be included?

Only if your reading time comes out of the exam length. In CBSE board exams it does not: the paper is handed out 15 minutes early for reading, and the 3 hours of writing start after it. If your school counts reading inside the length, subtract it as well.

What if I finish a question early?

Bank the time and move on. Minutes per mark is a budget, not a rule for every question: time saved on a quick MCQ is time you can give a long answer or your checking.

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