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Attendance percentage calculator, and how many you can miss.
Enter the days or classes held and the ones attended. You'll see the percentage, how many you can still miss and stay at 75%, or how many in a row you need to attend to get back to it.
Attendance calculator
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182 of 200 days
91%attendance
At or above 75%. You can miss the next 42 days and still be at 75%.
- Working days so far
- 200
- Days present
- 182
- Days absent
- 18
How it's worked out
Attended ÷ held × 100, then two quick checks.
Swap 0.75 for your own minimum: 0.8 for 80%, 0.65 for 65%.
Rounded down, because missing part of a class isn't possible. Only for someone already at or above 75%.
Rounded up. The 0.25 is 1 − 0.75: each class attended adds one to both counts.
01Above 75%: how many days can a student miss?
- Present on 182 of 200 working days.
- 182 ÷ 200 × 100 = 91%
- 182 ÷ 0.75 − 200 = 42.67, rounded down to 42
91%, and 42 more days can be missed. 182 of 242 is 75.2%.
02Below 75%: how many classes in a row to catch up?
- Attended 50 of 72 lectures.
- 50 ÷ 72 × 100 = 69.4%
- (0.75 × 72 − 50) ÷ 0.25 = (54 − 50) ÷ 0.25 = 16
Attend the next 16 in a row. 66 of 88 is 75%.
03Some of the term still to come.
- 85 of 120 days so far (70.8%), with 60 working days left.
- The full term is 180 days. 75% of 180 = 135 days present needed.
- 135 − 85 already present = 50
Attend at least 50 of the 60 days left, so no more than 10 can be missed.
What counts as held and attended
Held is every class or working day that actually took place: in a school, the days the register was marked; in a college, the lectures your teacher took attendance for. Holidays and cancelled classes don't count.
Attended is the ones you were marked present for. A day on leave still isn't a day present, even when the leave was approved. It does matter later, though: leave records are what a board or university looks at when it decides whether to excuse a shortage.
The calculator rounds down, so it never shows 75% for someone who's really at 74.96%. The board and university rules we've read state the minimum as 75% and say nothing about rounding up, so don't count on it.
Where the 75% rule comes from
| Who | Minimum, and the period it covers |
|---|---|
| CBSE, Classes X and XII | 75% of the classes held, from the day Class X or XII teaching starts up to the 1st of the month before the board exams begin. |
| ICSE (CISCE, Class X) | 75% of working days in each of Classes IX and X, counted up to 15 February of the exam year. |
| ISC (CISCE, Class XII) | 75% of working days in each of Classes XI and XII, counted up to 31 January of the exam year. |
| Colleges and universities | Set by each institution, under its own regulations. |
Many people still quote 75% as a UGC rule for colleges. The UGC's 2003 regulations did say attendance "ordinarily shall not be less than 75%", but the 2025 regulations that replaced them leave the minimum to each institution and its statutory bodies. Check your own university's rules. Anna University, for example, asks for 75% and allows 65% to 74% only on medical or sports grounds.
If you're below 75%
A shortage isn't always the end of it. Boards can excuse part of it, which they call condonation, but only with reasons on record.
- CBSE. The Chairman can condone a shortage of up to 15%. Below 60%, only in exceptional circumstances on medical grounds. The school has to send the case to its regional office at least three weeks before the exams, with documents. CBSE's 2024 and 2025 circulars repeat that the rule is applied strictly.
- CISCE. The Chief Executive and Secretary can condone a shortage down to 60%. Below that, only in exceptional cases such as serious illness, or taking part in authorised sports or arts events.
- Colleges. Whatever the university's regulations allow. Ask the department early, while there are still classes left to make up the gap.
Either way, the number that helps most is the one in the calculator: how many classes in a row you need. Put in the days still to come and it'll tell you whether 75% is still reachable this term.
For a whole class
Teachers working out every student's percentage each month will want the attendance register in Excel. It has a sheet per month with P, A and L marks, works out each student's percentage, and shows how many days in a row anyone below the minimum needs to attend.
Sources
We read each of these on 21 October 2026. Rules change, so check the latest circular before you rely on a detail.
- Examination Bye-Laws, Regular Candidates (rules 13 and 14), CBSE.
- Strict Compliance with Attendance Requirements as per CBSE Examination Bye-Laws for Board Examination Eligibility, CBSE, 9 October 2024.
- Circular CBSE/COORDI/Shortage-Attend./2025 on attendance and eligibility, CBSE, 4 August 2025.
- ICSE Regulations, Year 2028 (attendance), CISCE.
- ISC Regulations, Year 2028 (attendance), CISCE.
- UGC Regulations on Minimum Standards of Instruction for the Grant of the First Degree, 2003, clause 5.8 (since replaced), University Grants Commission.
- UGC (Minimum Standards of Instruction for the Grant of Undergraduate Degree and Postgraduate Degree) Regulations, 2025, clause 8.0, University Grants Commission, 26 March 2025.
- Academic Regulations 2021, B.E./B.Tech. programmes, clauses 7.1 to 7.3, Anna University.
FAQ
Questions people ask about this.
Something we haven't covered? Ask us. We reply within one working day.
- How do I calculate my attendance percentage?
- Divide the classes you attended by the classes held, then multiply by 100. Attending 182 of 200 days is 182 ÷ 200 × 100 = 91%.
- How many classes can I miss and still have 75%?
- Divide the classes you've attended by 0.75 and take away the classes held so far, then round down. With 182 of 200, that's 182 ÷ 0.75 − 200 = 42.67, so 42 more. This assumes you miss them before any more classes are held.
- How many classes do I need to attend to reach 75%?
- Take 0.75 × classes held, subtract the classes you've attended, and divide by 0.25. Round up. With 50 of 72, that's (54 − 50) ÷ 0.25 = 16 classes in a row.
- Is 74.5% rounded up to 75%?
- Don't count on it. The CBSE, CISCE and university rules we've read state the minimum as 75% and say nothing about rounding up. Ask your school or university how it counts.
- Does medical leave count as attendance?
- No, a day on leave isn't a day present. But medical certificates and leave records are what a board or university looks at when it decides whether to excuse a shortage, so keep them.
- What is the minimum attendance for ICSE and ISC?
- 75% of working days in each year of the two-year course, counted up to 15 February for ICSE and 31 January for ISC. The council can condone a shortage down to 60%.
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