Percentage Grade Calculator
Calculate your percentage score and letter grade from marks obtained and total marks.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Percentage = (marks obtained ÷ total marks) × 100. Enter your marks to see your percentage and letter grade.
Your result
90.00%
Percentage
Letter gradeA
AI explanation
Formula
Percentage = (marks obtained ÷ total marks) × 100Worked example
450 out of 500
| Field | Value |
|---|---|
| Marks obtained | 450 |
| Total marks | 500 |
| Percentage | 90 |
| Letter grade | A |
Assumptions
- Letter grade uses a common absolute scale (A≥90, B≥80, C≥70, D≥60, else F) — actual grading scales vary by institution.
Frequently asked questions
How is percentage calculated from marks?
Divide the marks you obtained by the total possible marks, then multiply by 100.
Do all institutions use the same letter grade scale?
No — the A/B/C/D/F cutoffs shown here are a common convention, but many schools, colleges, and exam boards use their own scales (including relative/curved grading).
What's the difference between this and the Marks Percentage Calculator?
They use the same formula — this page frames it as an overall "grade," while Marks Percentage Calculator is framed for a single test or assignment.