Attendance Percentage Calculator

This calculator gives your current attendance percentage and answers the two questions students actually ask: how many of the remaining classes do I have to attend to end the term at the required percentage, and how many classes can I skip right now without dropping below it. Enter what you have attended, the total held so far, the required percentage and how many sessions are left.

It suits college students facing a minimum-attendance rule (75% is common at many Indian universities and colleges), parents checking a school report, and employers or trainers tracking session attendance. The same arithmetic works for lectures, labs, shifts or training days — anything counted in whole sessions.

The calculator treats every session as equal. If your institution weights labs differently, counts half-days, or excuses medical absences, apply those rules to your counts first. Attendance is one input to results; to see what you need on the exam itself, use the final grade calculator.

The "must attend" figure looks at the whole term: it is the number of remaining sessions you need so that your end-of-term attendance meets the target. If it is larger than R, the target cannot be reached. The "can skip now" figure is stricter: it is how many classes in a row you could miss starting today and still be at or above the target at that moment, which matters when attendance is checked mid-term (for exam eligibility or a monthly report). Both round to whole classes — up for attending, down for skipping.

For a term with a fixed number of sessions, the maximum absences allowed is the total × (1 − required %), rounded down. Rounding matters: with 45 classes at 75%, 11.25 rounds down to 11 absences, not 12.

• College minimums: many Indian universities set 75% per subject as the exam eligibility threshold, sometimes with a condonation band for documented medical reasons. Check your own college's rules — some count per subject, others across all subjects.
• US schools: a student is generally counted as chronically absent after missing 10% or more of school days for any reason, excused or not.
• England: the Department for Education treats missing 10% or more of possible sessions as persistent absence. A school year of 190 days has 380 sessions (morning and afternoon), so 38 missed sessions crosses that line.
• Work and training: apprenticeships, visa-sponsored courses and paid training may set their own attendance minimums; the calculation is identical, using shifts or training days as sessions.

For percentages of anything else, the general percentage calculator does the same division.

Use the attendance record your institution keeps, not your own memory — portals and registers often count labs, tutorials and cancelled classes differently. A cancelled class usually does not count in the total at all. Late arrivals may be marked present, absent or as a half; if your college counts a late mark as half an absence, add 0.5 to absences for each. If attendance is assessed per subject, run the calculator separately for each subject rather than combining them, because one weak subject can block an exam even when your overall figure is fine.