Most Indian colleges and universities require 75% attendance before you can sit end-semester exams. That includes engineering colleges under AICTE-affiliated universities, the University of Mumbai, Savitribai Phule Pune University, Delhi University and most state boards. The Attendance Calculator tells you your current attendance percentage. It also tells you how many more classes you must attend to reach your target, or, if you are already above it, how many classes you can still miss safely.
How to use the attendance calculator
- Total classes held: the number of lectures conducted so far, from your college portal or attendance register.
- Classes attended: the number you were marked present for.
- Target attendance: 75% by default. Drag the slider for 60%, 80%, 85% and so on.
- Press Calculate Attendance.
Formulas used
Classes needed to reach the target (t): if you attend every class from now on, you need x more classes where:
Classes you can skip while staying at the target:
Worked examples (target 75%)
Below target: 68 of 100 classes attended
Current = 68%. Needed: (0.75 × 100 − 68) ÷ 0.25 = 7 ÷ 0.25 = 28 more classes in a row. Check: (68 + 28) ÷ (100 + 28) = 96 ÷ 128 = 75%.
Above target: 80 of 100 classes attended
Current = 80%. You can miss ⌊80 ÷ 0.75 − 100⌋ = ⌊6.67⌋ = 6 classes. Check: 80 ÷ 106 = 75.5%. Missing a seventh would drop you to 74.8%.
Quick reference: classes needed to reach 75%
| Current situation | Current % | Consecutive classes needed |
|---|---|---|
| 35 / 50 | 70% | 10 |
| 30 / 50 | 60% | 30 |
| 70 / 100 | 70% | 20 |
| 60 / 100 | 60% | 60 |
| 100 / 150 | 66.7% | 50 |
Falling behind is easy and climbing back is slow. Every class you miss needs about three attended classes to make up for it at a 75% target. Recover early in the semester, when the totals are still small.
Attendance rules you should know
- Subject-wise vs overall: many universities apply the 75% rule per subject, and sometimes separately for theory and practicals. Calculate each subject on its own.
- Condonation: many universities can condone a shortfall, typically down to 65–70%, for medical reasons, sports or NSS/NCC duty, sometimes with a fee. You will need documents such as medical certificates.
- Schools: CBSE requires 75% attendance to appear in board exams, with relaxation for medical emergencies, national-level sports and similar reasons.
- Duty leave: official college events, placements and competitions are often marked as on-duty and count as present. Ask your department.
Rules differ by university and change over time. Your institution’s ordinance or student handbook is the final authority.
Tips to protect your attendance
- Check the portal weekly and report wrong marks to the faculty straight away. Corrections are hard near exams.
- Calculate subject-wise. A subject with fewer weekly lectures, such as 2 a week, drops fastest when you miss one.
- Keep your “can miss” buffer for genuine illness or emergencies rather than using it all early.
- For your marks percentage, see the Marks Percentage Calculator. For grades, see the CGPA Calculator.
Frequently asked questions
How do I calculate attendance percentage?
Divide the classes attended by the total classes held and multiply by 100. 45 of 60 classes is 75%.
How many classes do I need to attend to reach 75%?
Use x = (0.75 × Total − Attended) ÷ 0.25, rounded up. With 68 of 100 attended, you need 28 more classes in a row.
How many classes can I bunk and still keep 75%?
Use y = Attended ÷ 0.75 − Total, rounded down. With 80 of 100 attended, you can miss 6 classes.
Is 75% attendance compulsory in Indian colleges?
In most universities, yes. Students below 75% may be barred from end-semester exams unless the shortfall is condoned for valid reasons. The exact rule depends on your university.
Is attendance calculated subject-wise or overall?
It depends on the university. Many apply 75% per subject, and some separately for theory and practicals. Check your handbook and calculate each subject separately to be safe.