Class Attendance Calculator
Find your attendance percentage from classes.
Results update as you type.
How it works
Many schools and courses set minimum attendance requirements, and this calculator finds your attendance percentage along with how many classes you have missed. You enter the number of classes you have attended and the total number held so far, and it returns your attendance percentage and your count of absences. The calculation is a simple ratio: classes attended divided by total classes, expressed as a percentage, with absences being the difference between the two. Attendance requirements are common in universities and many programs, often set at 75 or 80 percent, and falling below the threshold can affect eligibility to sit exams, course credit, or grades, so tracking your standing matters. Knowing your current percentage lets you see how much margin you have and plan accordingly, whether you can afford to miss an upcoming session or need to attend every remaining class to stay eligible. The absences count gives a concrete sense of how many sessions you have skipped. This is useful for students monitoring their own attendance, and the same calculation applies to work attendance, training programs, and any situation where presence is tracked against a total. Enter your classes attended and total classes to compute your attendance percentage.
Attendance % = classes attended / total classes × 100
Attendance percentage divides the number of classes you attended by the total number of classes held and multiplies by 100. It shows the share of sessions you were present for. The absences figure is simply the total classes minus those attended, telling you how many sessions you missed.
Source:Academic administration
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter classes attended and total classes held.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
Attendance updates instantly as you type — no button to press.
Frequently asked questions
How do I calculate attendance percentage?
Divide the number of classes you attended by the total number of classes held, then multiply by 100. Attending 27 of 30 classes gives 90 percent attendance. The calculator does this and also shows your number of absences, which is simply the total minus the classes you attended.
What is a typical minimum attendance requirement?
Many universities and programs require at least 75 percent attendance, though some set it at 80 percent or higher. Falling below the minimum can bar you from exams, affect your grade, or cost course credit. Check your institution's policy, since requirements and consequences vary by school and even by individual course.
How many classes can I miss and stay above the threshold?
It depends on the total number of classes and the required percentage. As a rough guide, at a 75 percent requirement you can miss up to a quarter of all sessions. Calculate your current percentage, then work out how many remaining classes you must attend to keep the ratio above your required threshold.
Does this include excused absences?
The calculator simply divides attended classes by total classes, so how excused absences are treated depends on your institution's policy. Some schools count excused absences toward the total, others exclude them. Enter the numbers according to how your school defines attendance so the percentage matches the official calculation used for your standing.
Can I use this for work or training attendance?
Yes. The same ratio applies anywhere presence is tracked against a total, including work shifts, training sessions, meetings, and programs with attendance rules. Enter the sessions you attended and the total held, and the calculator gives your attendance percentage and absences, which is useful for meeting workplace or program requirements.