The calculator shows your current attendance, how many classes you must attend in a row to reach the required percentage, or how many you can still miss.
Attendance percentage formula
Example: 42 ÷ 60 × 100 = 70%.
How many classes do I need to reach 75%?
With 42 out of 60, you need (45 − 42) ÷ 0.25 = 12 classes in a row. Round up to the next whole class.
How many classes can I miss?
With 50 out of 60 (83.3%), you can miss (50 − 45) ÷ 0.75 = 6.67, so 6 classes. Round down.
Why 75%?
Most Indian universities and boards require at least 75% attendance to sit for semester or board exams. Some allow a small shortage on medical grounds. Check your college's rule, because a few use 80% or 85%.
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Frequently asked questions
How do I calculate my attendance percentage?
Divide classes attended by total classes and multiply by 100.
How many classes can I bunk and stay above 75%?
Classes you can miss = (attended − 0.75 × total) ÷ 0.75, rounded down. The calculator does this for you.
Is 75% attendance compulsory?
In most Indian universities, yes, for exam eligibility. Your college's rule decides the exact limit.
Last updated: November 2026