Attendance Calculator
Calculate your current attendance percentage and find out exactly how many of the remaining classes you must attend to meet the minimum requirement.
How It Works
Calculates attendance as (present/total)×100. Projects how many future classes to attend to reach a minimum threshold.
Formula
Attendance % = (Present ÷ Total) × 100
Needed = ⌈(Target% × Total_With_Remaining − 100 × Present) / 100⌉
Example
60 of 80 classes = 75%. 20 remaining. Need 80%:
Attend all 20 → 80/100 = 80%
When to Use This Calculator
Use when your institution requires minimum attendance (75–85%) for exam eligibility, or for HR absenteeism tracking.
Common Mistakes to Avoid
- Not tracking early — early absences have outsized impact when total classes are few.
- Assuming medical leaves count against you — check if your policy excludes medical absences.
- Future classes increase denominator too — attendance math accounts for this.
Frequently Asked Questions
Minimum attendance requirement?
Most universities require 75–80% for exam eligibility. Professional programs may require 85–90%.
How many classes can I miss?
For 75% in 100 classes: miss at most 25. Use this calculator for your exact numbers.
Do online classes count?
Generally yes if the institution considers them equivalent. Check your policy.
Can I recover from low attendance?
Depends on remaining classes. More left = easier recovery. Calculator shows exact number needed.
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Last Updated: July 4, 2026