Free student tool
Attendance Calculator
Find your attendance percentage, how many classes you must attend to reach 75% (or your college limit), and how many you can still miss.
Most colleges ask for 75%. Some ask for 80% or 85% for exams or scholarships, so change the box if yours is different.
Common questions
How is attendance percentage calculated?
Classes attended divided by total classes held, multiplied by 100.
How many classes do I need to attend to reach 75%?
If you attend the next x classes without missing any, attendance becomes (attended + x) divided by (held + x). The tool finds the smallest x that reaches your target.
Is this calculator free?
Yes. It is free to use and needs no sign-up.
Is the result official?
No. Results are estimates for your own planning. Check your college or university rules for the official method.