Check attendance percentage and how many classes you can skip.
Enter classes attended and total classes held. The calculator shows your percentage, how many you can skip, and how many you must attend.
Current Attendance
0.00%
Can skip
0
classes and stay above target
Must attend
0
consecutive classes to reach target
The Attendance Calculator helps you stay on top of your class attendance requirements. Enter the number of classes you have attended, the total number of classes held so far, and your target attendance percentage (75% by default). The calculator instantly returns your current attendance percentage, the number of classes you can safely skip without falling below your target, and the number of consecutive classes you must attend to reach your target if you are below it.
Attendance % = ( Attended ÷ Total Held ) × 100
Can Skip = floor( Attended ÷ Target − Total Held )
Must Attend = ceil( ( Target × Total Held − Attended ) ÷ ( 1 − Target ) )
Suppose you have attended 32 out of 40 classes and your school requires 75% attendance:
If instead you had attended only 28 out of 40 classes:
Most universities enforce a minimum attendance requirement — typically 75% — as a condition for sitting exams. Falling below this threshold can make you ineligible to take your finals, effectively forcing you to repeat the course. Because attendance compounds over the semester (each missed class lowers your percentage), it is much easier to maintain a healthy attendance buffer early than to recover from a deficit late in the term.
The calculator helps you make strategic decisions about when to skip. If you have a 90% attendance and only need 75%, you have a buffer of several classes you can skip without consequence. This is valuable when you need to miss class for legitimate reasons — interviews, family events, or focused study time for another course. Conversely, if you are at 70% with three weeks left, the calculator tells you exactly how many consecutive classes you must attend to claw your way back above the threshold.
Attendance % = ( Classes Attended ÷ Total Classes Held ) × 100. For example, if you attended 38 out of 45 classes: (38 ÷ 45) × 100 = 84.4%.
It depends on your current totals. The calculator computes this dynamically. As a rule of thumb, if you are at exactly 75% with N total classes, you can skip floor((attended × 0.25) ÷ 0.75) more classes before dropping below.
Most universities require 75% attendance to be eligible for exams. Some schools require 80% or 85%. Check your institution's specific policy in the student handbook.
The calculator computes this. Mathematically: Required Future Classes = (0.75 × Total Held − Attended) ÷ 0.25, assuming you attend all future classes.
Most universities excuse medical leave with a valid doctor's certificate, but policies vary. Check with your registrar — some count it toward attendance, others waive the requirement entirely for the missed period.
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