Attendance Percentage Calculator
Check your attendance percentage and how many classes you must attend, or can miss, to stay above a required level.
About the Attendance Percentage Calculator
Enter the classes held so far, the classes you attended and the attendance your college requires. The calculator gives your attendance percentage and either how many classes in a row you must attend to reach the requirement, or how many you can still miss.
Many colleges, including most Indian universities, require 75% attendance to sit exams. If you're below it, attending x more classes in a row gives (attended + x) ÷ (held + x) ≥ required.
The formula
Classes needed = ⌈(required × held − attended) ÷ (1 − required)⌉
- Classes you can miss
- ⌊attended ÷ required − held⌋
Worked example
42 of 60 classes attended, 75% required
- Attendance: 42 ÷ 60 = 70%
- Needed: (0.75 × 60 − 42) ÷ 0.25 = 12 classes in a row
- Check: 54 ÷ 72 = 75%
Questions people ask
Do medical leaves count?
Rules differ; many institutions allow condonation with documentation.
Is it per subject or overall?
Often per subject; check each separately.
How many can I miss at 50 of 60?
6 more: 50 ÷ 66 = 75.8%, and a seventh would drop you below 75%.