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Education Calculators

Student Attendance Calculator

Check where your attendance stands and plan the rest of the term. If you are above your target, see how many classes you can miss; if you are below it, see how many you need to attend in a row to catch up.

%
Current attendance72.22%

Below 75%.

Classes to attend in a row
8
Classes missed
20
Step-by-step working
  1. Attendance = 52 ÷ 72 × 100 = 72.22%
  2. Need (52 + x) ÷ (72 + x) ≥ 0.75 → x ≥ 8 → 8

How to use the Student Attendance Calculator

  1. Enter how many classes you attended and how many were held.
  2. Set your required percentage.
  3. Press Calculate.

Formula

Attendance % = attended ÷ held × 100

Can miss = ⌊attended ÷ p − held⌋   Must attend = ⌈(p × held − attended) ÷ (1 − p)⌉, with p as a decimal.

Examples

  • 52 of 72 at 75%: 72.22%, so you must attend 8 classes in a row to reach 75% (60 of 80).

Frequently asked questions

Does this count medical leave?

No. If your college excludes approved leave from the total, subtract those classes from “classes held” first.

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