Attendance Calculator
Check your attendance and find out how many classes you must attend, or can safely skip, to stay above 75%.
College • School • 75% ruleEvery college student knows the 75% stress. One week you are fine, the next week a few missed lectures and suddenly you are not sure if you will be allowed to sit for the exam. Counting it on your fingers never gives a clear answer.
This attendance calculator tells you your exact attendance percentage and, more usefully, what to do next: how many classes you can still skip safely, or how many you must attend in a row to get back to 75% (or any target you set).
How to use the attendance calculator
- Enter the total number of classes held so far.
- Enter how many of them you attended.
- Enter the minimum attendance your college asks for (usually 75%).
- Tap Calculate.
How it works
- Attendance % = Classes attended ÷ Total classes × 100
- Classes you must attend in a row = (Target × Total − 100 × Attended) ÷ (100 − Target), rounded up
- Classes you can skip = (100 × Attended − Target × Total) ÷ Target, rounded down
A worked example
Riya’s college held 60 lectures and she attended 40. Her attendance is 66.7%, below 75%. If she attends the next 20 lectures without a break, she will have 60 out of 80, which is exactly 75%.
Her friend Aman attended 54 out of 60 lectures (90%). He can skip up to 12 more lectures and still stay at 75% (54 out of 72). That does not mean he should, but now he knows where he stands.
Tips to stay safe
- Check your attendance every week instead of at the end of the semester.
- Calculate each subject separately, because many colleges apply the 75% rule subject-wise.
- Keep medical certificates if you fall ill; many universities consider them for condonation.
- Labs and practicals often have stricter rules, so check them separately.
Frequently asked questions
Why is 75% attendance required?
Many universities and boards ask for at least 75% to allow you to sit for exams. Your college rules decide the exact number and any exemptions.
Can I reach 100% after missing a class?
No. Once a class is missed, you can get close to 100% but never reach it.
Can I set a target other than 75%?
Yes. Enter any target, such as 80% or 85%, if your college asks for it.
Does it save my data?
No. Everything is calculated in your browser.
