How to Use Attendance Calculator
Calculate your attendance percentage and see how many more classes you can skip — or must attend — to hit a required threshold.
Open the Attendance Calculator tool →What is Attendance Calculator?
Work out your attendance % and how many classes you can miss or must attend. It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use Attendance Calculator
- Open the Attendance Calculator tool.
- Enter your details or values.
- The result is calculated instantly.
- Copy or use the result. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
What does it calculate?
Your attendance percentage, plus how many more classes you can miss or must attend to stay above a required threshold.
How do I set the requirement?
Enter your attendance minimum (for example 75%) and it tells you your margin.
Is my data uploaded?
No — it's calculated locally in your browser.
Ready to try it?
Open Attendance Calculator →