How attendance percentage calculator works
Most courses enforce a minimum attendance percentage — 75% is the classic rule, but policies range from 60% to 100%. The math is simple: attendance % = classes attended ÷ classes held × 100. What makes it confusing is everything downstream: how many future classes you can still skip, how many straight attendances it takes to climb back over the line, and how your current absences project over a whole term.
Enter the classes you have attended and the classes held so far, plus your required percentage (75 if you leave it blank). The tool returns your current percentage, whether you meet the requirement, the number of consecutive classes you could skip right now and still stay at or above the line, and — if you are short — exactly how many classes in a row you must attend to recover.
If you also enter the total number of sessions in the term, the tool computes your full absence budget: how many absences the whole term allows, how many you have left, and what your final percentage would be with perfect attendance from here. The budget is computed with a ceiling so fractional sessions always round against you: at 75% of a 40-session term you must attend 30 sessions, leaving 10 allowed absences.
The recovery formula answers the question "if I attend every class from now on, when am I safe again?": you need x straight attendances where (attended + x) ÷ (held + x) ≥ required. At 10 of 16 with a 75% rule that is 8 classes — (10+8) ÷ (16+8) = exactly 75%.