Attendance Calculator
Calculate your attendance percentage and see how many classes you can skip or must attend to maintain a target percentage.
Current Attendance
How to use the Attendance Calculator
- Enter the number of classes attended.
- Enter the total classes held so far.
- Enter the required attendance (commonly 75%).
- Click Calculate to see current attendance and how many classes you need or can skip.
Formula used
Classes needed = ⌈(R × T − A) ÷ (1 − R)⌉
Classes you can skip = ⌊A ÷ R − T⌋
A = classes attended, T = total classes held, R = required attendance as a decimal (75% = 0.75).
Worked example
Two situations with a 75% requirement
Attended 30 of 45 (66.7%): you must attend the next 15 classes in a row to reach 75% (45 of 60).
Attended 40 of 48 (83.3%): you can miss 5 classes and still stay at 75% (40 of 53).
Why 75% matters
Most Indian universities, AICTE colleges and school boards require at least 75% attendance to sit for exams; some allow condonation down to 65% with a medical certificate and fee. Keep a small buffer above the minimum, because unexpected illness or holidays can push you below the line late in the term.
Tips for accurate results
- Check whether your college counts attendance per subject or overall.
- Labs and tutorials are often counted separately.
- Recalculate weekly so you are never surprised near exams.
Frequently Asked Questions
Use the "can skip" result; it shows the maximum classes you can miss from now while staying at your target.
It depends on your institution; many do not round, so aim for at least 75%.
Speak to your department about condonation rules early.
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Content reviewed by Vinod, Easy Smart Calculator · Last updated October 2026