Attendance Percentage and Required Attendance Calculator
Works out attendance, and what it takes to meet a required percentage.
Attendance
— %
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Classes in a row to reach the requirement —
Classes you can miss from here —
Of the classes to come, you must attend —
Best possible by the end — %
Reading this —
The formula
attendance = attended ÷ held × 100 classes to reach = (T × held − attended) ÷ (1 − T), rounded up classes you can miss = attended ÷ T − held, rounded down
T is the requirement as a fraction. Schools differ on what counts, including medical leave and late arrivals.
What to watch out for
Count classes the way your school does, whether by lecture, lab or day.
Frequently Asked Questions
How do I work out attendance percentage?
Attended ÷ held × 100. 28 of 40 is 70%.
How many classes do I need to reach 75%?
From 28 of 40, 8 classes in a row, assuming no misses.
How many classes can I miss at 75%?
From 36 of 40, you could miss 8 and still be at 75%.