Attendance Calculator
Attendance %, classes you can skip, or classes needed to reach 75%.
Runs in your browser — nothing is uploaded—
Details
How to use Attendance Calculator
- Enter your values — the unit for each field is shown next to it.
- The result updates instantly as you type.
- Copy the results, or change inputs to compare scenarios.
Formula & assumptions
Attendance = attended ÷ held × 100
Classes needed = ⌈(r·held − attended) / (1 − r)⌉