Student
Attendance Calculator
Free attendance calculator. Find your attendance percentage, how many classes you can miss and how many you must attend to reach your required percentage, for every subject.
| Subject | Classes held | Classes attended | Total in semester (optional) | |
|---|---|---|---|---|
These are example numbers. Replace them with your own.
Overall attendance, all subjects
74.29%
52 attended out of 70 classes held
Subject 1
80.00% Safe
You can miss up to 2 more classes in a row and stay at 75% or above.
If you skip the next 2, your attendance becomes 76.19%.
Of the 20 classes left, attend at least 13. You can miss 7 and still finish at 75%.
Subject 2
66.67% Below requirement
Attend the next 10 classes in a row to reach 75%.
If you skip the next 2, your attendance becomes 62.50%.
Of the 18 classes left, attend at least 16. You can miss 2 and still finish at 75%.
How attendance percentage is calculated
Attendance percentage is the number of classes you attended divided by the number of classes held, multiplied by 100. If your college held 40 classes and you attended 32, your attendance is 80 percent. This calculator does that sum for every subject and also shows your combined attendance across all subjects.
How many classes can you miss
The number of classes you can still miss depends on how far above the requirement you are. Multiply your attended classes by 100 and divide by the required percentage. Subtract the classes held and round down. With 32 attended out of 40 and a 75 percent rule, you get 42.67 minus 40, so you can miss 2 more classes. A third missed class would drop you to 74.4 percent.
How many classes you must attend to recover
If you are below the requirement, every class you attend lifts both the top and the bottom of the fraction, so recovery is slower than most students expect. With 20 attended out of 30 held, you are at 66.67 percent. You must attend the next 10 classes in a row to reach 75 percent. The calculator works this number out for you.
Plan the whole semester
Enter the total number of classes planned for the semester and the tool looks ahead. It shows how many of the remaining classes you must attend and how many you can safely miss. If the target is no longer reachable, it tells you early, while you can still speak to your teacher or department.
Common attendance requirements
Many colleges and universities ask for 75 percent attendance to sit the final exam. Some use 60, 65, 80 or 85 percent, and some apply a different limit to labs. Use the quick buttons to switch between common values, or type your own. Always confirm the rule in your student handbook.
Tips to protect your attendance
Do not use your spare absences early in the semester. Illness, travel and family events tend to arrive later, and you will want a buffer for them. Check each subject separately, because a single weak subject can block you from an exam even when your overall figure looks healthy. Keep copies of medical certificates in case your college allows condonation.
Frequently asked questions
How do I calculate my attendance percentage?
Divide the number of classes you attended by the number of classes held, then multiply by 100. If you attended 32 of 40 classes, your attendance is 80 percent.
How many classes can I miss and still keep 75 percent?
Multiply your attended classes by 100, divide by 75, then subtract the classes held. Round down. With 32 attended out of 40 held, 32 times 100 divided by 75 is 42.67. Subtract 40 and you can miss 2 more classes.
How many classes must I attend to get back to 75 percent?
Attend classes in a row until the percentage reaches your requirement. With 20 attended out of 30 held, you must attend the next 10 classes in a row to reach exactly 75 percent.
Do medical leaves count as attended?
That depends on your institution. Many colleges allow a condonation of a few percent with a medical certificate, but the rules differ. Check your student handbook and enter only the classes your college counts as attended.
Planning your study time too? Try our study plan spreader and GPA calculator.
This tool is free with no usage limit, use it as often as you need.