Attendance Impact Calculator How Absences Affect Grades

See how missed classes affect your final grade. Model attendance policies, thresholds, and weighting to predict the impact of absences.

Policy: Choose Category Linear if attendance is a weighted category (e.g., 10% of course). Choose Penalty per Absence if your syllabus subtracts a fixed percent for each absence over an allowance.

Counts: Set Total Classes, Classes Held, Absences So Far, and optional Expected Future Absences to project outcomes.

Letters: Use Edit thresholds to adjust percent→letter mapping or Reset thresholds.

Export: Save results as CSV or PDF. Use the share button to copy a link with your inputs.

Target GPA Helper

Projections
Additional AbsencesFinal Attendance %Projected Grade %Letter

How to use this Attendance Impact Calculator

  1. Choose Category (weighted) or Penalty policy.
  2. Enter your Total Classes, Classes Held, Absences, and any Expected Future Absences.
  3. Set the policy inputs (weight & base grade for Category; allowance, penalty, max penalty & base grade for Penalty).
  4. (Optional) Edit percent→letter thresholds if your school’s mapping is different.
  5. Export CSV/PDF or share a link to keep your scenario.

Why use this tool

  • Supports both attendance category weighting and penalty-per-absence policies.
  • Instant projections for different absence counts with clean table export.
  • Editable percent→letter thresholds, mobile-first, shareable, and print-ready.

Attendance Impact — Frequently Asked Questions

What’s the difference between Category and Penalty?

Category treats attendance as its own category (e.g., 10% weight) scored by your attendance %. Penalty subtracts a fixed course percentage for each absence beyond allowed absences, up to a max penalty.

How are letters determined?

By the thresholds in the editor above. The tool keeps A+ ≥ A ≥ A- ≥ … ≥ D- so the mapping stays consistent.

Can I export or share?

Yes — export CSV or PDF, or copy a share link that preserves your entries.