How do I calculate my attendance percentage?

Attendance percentage = (classes attended / total classes held) x 100. For example, 68 attended out of 80 held is (68 / 80) x 100 = 85%.

How many classes can I miss and still keep 75% attendance?

If you know the total classes for the term, the maximum you can miss is 25% of them. Subtract the classes you have already missed to see how many you can still skip. The calculator does this for you when you enter the term total.

How many classes must I attend to reach 75%?

If you are below 75%, the number of extra consecutive classes you must attend is (0.75 x classes held - classes attended) / 0.25, rounded up. The calculator shows this automatically.

Attendance Percentage Calculator — 75% Rule (Classes You Can Miss)

Free attendance calculator for the common 75% rule (works for any required percentage). Educational tool — check your institution's exact policy.

Quick answer: Attendance % = (classes attended ÷ classes held) × 100. To keep the usual 75%, you can miss at most 25% of the term's total classes. If you're already below 75%, the extra classes you must attend in a row = (0.75 × held − attended) ÷ 0.25, rounded up. Enter your numbers below.

Attendance Percentage Calculator

Classes held so far Classes you attended Total classes in the term (optional — for "can I skip")

Required attendance %

Current attendance—

Status—

Key takeaways

Attendance % = (attended ÷ held) × 100.
For 75%, you can miss at most 25% of the term's total classes.
Below 75%? Attend (0.75×held − attended) ÷ 0.25 classes in a row (rounded up).
Enter the term total to see how many you can still skip overall.
Works for any threshold — change the required % box.

How attendance percentage works

Your attendance percentage is just the share of held classes you actually attended:

Attendance % = (classes attended ÷ classes held) × 100

So 68 attended out of 80 held = 85%. Most colleges and universities require a minimum of 75% to sit exams, though some set it higher — always confirm your own institution's rule.

"How many classes can I skip?"

If you know the total classes for the term, the most you can be absent is 25% of that total (for a 75% rule). Subtract what you've already missed to get how many you can still safely skip. Example: a 120-class term allows 30 absences; if you've missed 12, you can still skip 18 more.

"How many must I attend to recover?"

If you've slipped below 75%, attending future classes pulls the percentage back up. The number you must attend in a row is:

Classes needed = (0.75 × held − attended) ÷ 0.25, rounded up

The calculator figures this out for you and, if you enter the term total, also tells you how many more you can miss overall.

Related tools

Need marks and averages? Use the percentage calculator, the TN 10th grade calculator, or the Anna University CGPA calculator.

Frequently asked questions

How do I calculate attendance percentage?

(Classes attended ÷ classes held) × 100.

How many classes can I miss and keep 75%?

Up to 25% of the term's total; subtract what you've already missed.

How many must I attend to reach 75%?

(0.75 × held − attended) ÷ 0.25, rounded up.

About ComplyKraft. Built by Dinesh Kumar S in Chennai — B.Sc. Mathematics, M.Sc. IT. Free tools and guides for students.

Disclaimer: Educational tool. The required minimum (often 75%) and how odd/medical leaves are counted vary by institution — confirm your own attendance policy.