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Attendance Calculator (classes needed for 75%)

See your current attendance percent, how many classes you can skip, or how many in a row you must attend to reach 75%.

Quick answer

45 of 60 classes = 75 %.

How it is calculated

  1. Current attendance = attended ÷ total × 100 = 45 ÷ 60 = 75%.
  2. You can skip while attended ÷ (total + skipped) ≥ required %.
  3. If below: how many classes in a row bring you up to the required percent.

Worked example

45 of 60 classes attended: attendance is exactly 75%. Skipping even one class now drops you below 75%.

Example values
Classes attended45
Total classes so far60
Required75 %
Result
Current attendance75 %
Classes you can skip0
Classes you must attend0
Formula
Current attendance = At/Tt×100
Classes you can skip = max(0,floor((100×At-Rq×Tt)/Rq))
Classes you must attend = max(0,ceil((Rq×Tt-100×At)/(100-Rq)))

Good to know

Questions people ask

How many classes for 75% attendance?

75% of total classes; enter your numbers above to see what you need.

How do I calculate attendance percent?

Classes attended ÷ total classes × 100.

How many classes can I bunk?

The calculator shows how many you can miss while staying at the required percent.

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Updated 13 Nov 2026 · Desktop N Calculator v1.2.0