Letter Grade Calculator

Use a common US-style reference scale or change the A/B/C/D cutoffs to match your course or school.

Grade percentage

—Reference letter grade

Editable threshold scale — one letter:min% per line

Grading scales, rounding rules, extra-credit policies, dropped-score rules, and weighted GPA systems vary by school and course. Match the settings to your syllabus or institution before relying on a result.

How to use this Letter Grade Calculator

Convert a percentage to a letter grade using editable thresholds. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.