Living on the Margin: The Exact Formula for Staying Above 75% Attendance
How many lectures you can miss before a college blocks your admit card, the arithmetic behind the 75% rule, and how to work out the classes needed to recover.
Attendance Calculator: Bunk Margin and Recovery Plan
Plan your semester day by day: a class grid, holiday exclusions and a daily log showing your percentage against a 75% target and the classes needed to recover.
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Frequently asked questions
How is the bunk margin calculated?
The engine counts every remaining class from your day-wise weekly grid (minus holidays and quick off-classes), then computes how many of them you can miss while staying at or above your target percentage: attended ÷ total must stay ≥ target.
Can I add multi-day holidays?
Yes. Pick a From and To date once, and a 5- or 10-day break is added as a single entry, displayed with its inclusive day count, and every class scheduled inside the range is excluded automatically.
What are quick off-classes?
A fast way to subtract casual holidays or cancelled lectures without picking dates: enter a total number and it is deducted from your remaining classes automatically.
What is the recovery target?
If you are below your target percentage, it is the exact number of consecutive classes you must attend to climb back into the safe zone.
Is my attendance log private?
Completely. The schedule, holidays, and daily log live in your browser’s localStorage and never leave your device.