How to use Attendance Calculator
Current attendance is attended classes divided by all classes held. The recovery calculation finds how many consecutive new classes you must attend to reach your target. It increases both the attended and held counts for every new attended class.
The miss allowance answers a different question: how many new classes you can miss right now while staying at the target. Every class has equal weight. Your institution may track each subject separately, round differently or exclude authorised absences.
The formula
A worked example
Classes attended: 60 · Classes held: 80 · Required attendance (%): 75
Current attendance: 75%
Every class counts equally. Recovery assumes you attend every new class; the miss allowance assumes no new attended classes first.
Questions about this calculation
Does attending one class add one percentage point?
No. Both the attended count and the total held count increase, so the change depends on your starting counts.
Can I get back to exactly 100% after a missed class?
No finite number of additional classes restores an exact 100% when the missed class remains in the total.
Formula checks: 2026-10-08. Assumptions & corrections.