Strong showing. A small push gets you to A territory.
Percentage to Letter Grade Calculator
Got a percentage and want to know the letter grade behind it? This calculator converts any percentage from 0 to 100 into its matching letter grade and GPA points on the standard US 4.0 scale. Useful for students decoding a report card, teachers building rubrics, and anyone curious where a score lands.
How it works
The calculator matches your percentage against the standard US grading scale:
If percentage ≥ 93 → A (GPA 4.0)
If percentage ≥ 90 → A− (GPA 3.7)
If percentage ≥ 87 → B+ (GPA 3.3)
…and so on down to F at below 60%.Example calculation
A student scores 88% on a midterm. 88 is between 87 and 89.9, so it maps to:
88% → Letter grade B+ → GPA 3.3Full grading scale
| Percentage | Letter grade | GPA |
|---|---|---|
| 93 – 100 | A | 4.0 |
| 90 – 92.9 | A− | 3.7 |
| 87 – 89.9 | B+ | 3.3 |
| 83 – 86.9 | B | 3.0 |
| 80 – 82.9 | B− | 2.7 |
| 77 – 79.9 | C+ | 2.3 |
| 73 – 76.9 | C | 2.0 |
| 70 – 72.9 | C− | 1.7 |
| 67 – 69.9 | D+ | 1.3 |
| 63 – 66.9 | D | 1.0 |
| 60 – 62.9 | D− | 0.7 |
| Below 60 | F | 0.0 |
Who can use this
- • Students decoding report cards
- • Teachers building grading rubrics
- • Parents reviewing kids’ scores
- • College applicants estimating GPA
- • Anyone converting a percentage
Why use it
- • Standard US 4.0 scale
- • Instant letter and GPA result
- • Free, no signup
- • Works on any device
- • Includes the full conversion chart
This calculator is helpful for students, teachers, and parents who want a quick way to convert percentage scores into clear letter grades without checking grading charts manually.
Common Questions About Percentage to Letter Grade Calculator
What is a letter grade?
A letter grade is a single letter (A, B, C, D, or F, sometimes with + or −) that summarizes how well a student performed. It is the most common way US schools report grades.
How accurate is this percentage-to-letter conversion?
It uses the standard US 4.0 grading scale used by most American high schools and universities. Some schools tweak the cutoffs, so always confirm your school’s exact scale.
Do all schools use the same letter grade cutoffs?
No. Most US schools use the +/− scale shown here, but some use a 10-point straight scale (90 = A, 80 = B, etc.) and a few use custom cutoffs. Check your syllabus.
Is this calculator free and mobile friendly?
Yes — completely free, no signup, and it works on any phone, tablet, or laptop.
What is the highest letter grade?
A is the highest letter grade and is awarded for 93% and above on the standard scale. It maps to a 4.0 GPA.
Does it show the matching GPA points?
Yes. Each letter grade is paired with its GPA value on the unweighted 4.0 scale (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0).