Attendance Calculator

100% Client-Side Local Processing

Calculate attendance percentage, track classes you can safely miss, and predict consecutive classes needed to meet your target.

Attendance Details

Total Classes Conducted Whole number > 0

Classes Attended ≤ Total classes

Target Percentage (%) Between 1% and 100% (Decimals allowed)

Scenario Calculator Future Projections Only

Attend Next (+)

Miss Next (-)

Projected Attendance: — —

Attendance Summary

Awaiting input

To Reach Target

—

Enter attendance numbers to see consecutive classes required.

Safe to Miss

—

Enter attendance numbers to see classes you can safely miss.

Conducted 0

Attended 0

Absent 0

Target 75%

Attendance Percentage

Calculated as the ratio of classes attended to total classes conducted: Attendance % = (Classes Attended ÷ Total Classes Conducted) × 100. Absent classes equal Conducted minus Attended.

Consecutive Classes Needed

If current attendance is below target, find how many upcoming classes you must attend in a row: Required = ⌈(Target × Total − 100 × Attended) ÷ (100 − Target)⌉.

Safe Classes to Miss

When above your target percentage, determine your bunk buffer without dropping below criteria: Max Missable = ⌊(100 × Attended − Target × Total) ÷ Target⌋.