Attendance Calculators
Two calculators for attendance: what your percentage is now, and how many more classes you can miss before a requirement slips out of reach.
Both count whole classes and round the requirement up, because you cannot attend three quarters of a lecture — and rounding the other way would tell you that you are safe when one more absence would drop you below the line.
Start here
Most used
Attendance Calculator
Work out your attendance percentage and what you need to attend to reach a required minimum.
Open the Attendance CalculatorAll Attendance Calculators
Attendance Calculator
Work out your attendance percentage and what you need to attend to reach a required minimum.
Classes I Can Miss Calculator
Find out how many remaining classes you can skip and still meet your attendance requirement.
Which one should I use?
- Attendance Calculator — your percentage so far, from either the classes you attended or the ones you missed. It also covers what you need from here.
- Classes I Can Miss Calculator — one question, answered directly, with a table showing the exact absence at which the requirement stops being met.
How attendance is calculated
Your percentage is measured against the classes that have actually been held, not against the whole course.
Working out what is still required runs over the whole course instead. It finds the total number of classes you need to clear the minimum, subtracts what you have already attended, and whatever is left has to come from the classes still to come.
That total is rounded up. A 75% requirement over 45 classes is 33.75, and the only usable answer is 34.
Absences cost less as a course goes on
The same three absences read very differently depending on when they happen:
| Classes held | Attendance after 3 absences |
|---|---|
| 10 | 70% |
| 20 | 85% |
| 30 | 90% |
| 40 | 92.5% |
Early absences look worse than they are, because there are few classes to average against. Late ones are less damaging but much harder to recover from — there are fewer classes left to pull the figure back up.
Important notes
Attendance rules can carry real consequences
Required minimums differ between institutions, departments and individual courses. Some schools tie attendance to financial aid eligibility or, for international students, to visa status. If a number here is close to your limit, confirm the policy with your instructor or registrar rather than relying on this.
- Excused absences are excluded from the count at some schools and not at others.
- Cancelled classes normally do not count as held — leave them out of both figures.
- Partial attendance is counted differently everywhere; these tools work in whole classes.
- Your instructor's record is the one that counts.
Other calculators on the site
GPA Calculators
Calculate semester, cumulative, weighted and target GPA on the grading scale your school actually uses.
Grade Calculators
Work out course grades, weighted categories and the score you need on a final exam.
Teacher Tools
Fast grading tools for marking stacks of tests and quizzes.
Credit Hours Calculator
Track credit hours completed, in progress and remaining against your degree requirement.