US Grading Scale Reference

The complete standard US letter grade scale with percentage cutoffs and GPA values. Copy-ready for gradebooks, apps, forms, and course documentation.

US Letter Grades(12 grade levels)

A  — 93–100% — 4.0 GPA
A- — 90–92%  — 3.7 GPA
B+ — 87–89%  — 3.3 GPA
B  — 83–86%  — 3.0 GPA
B- — 80–82%  — 2.7 GPA
C+ — 77–79%  — 2.3 GPA
C  — 73–76%  — 2.0 GPA
C- — 70–72%  — 1.7 GPA
D+ — 67–69%  — 1.3 GPA
D  — 63–66%  — 1.0 GPA
D- — 60–62%  — 0.7 GPA
F  — 0–59%   — 0.0 GPA

Follows the most common US academic grading scale. Individual institutions may set different cutoffs — always verify with your school or syllabus.

How to use this grading scale

Use the scale in 3 steps

Takes ~5 seconds

1
Choose your format
Select text for copy-paste, JSON for code, or HTML for form dropdowns.
2
Copy the data
Click the copy button to grab the full grading scale in your chosen format.
3
Paste into your project
Use the data in your gradebook, app, documentation, or spreadsheet.

Need to convert a specific percentage? Use the Percentage to Letter Grade converter for instant results.

Common use cases

Developers building student grade tracking apps and gradebook tools
Teachers creating course documentation, syllabi, and rubrics
Students and parents understanding grade cutoffs and GPA impact

Format examples

Plain text for documentation.

Input

Text format

Output

A — 93–100% — 4.0 GPA

JSON for app development.

Input

JSON format

Output

["A  — 93–100% — 4.0 GPA", "A- — 90–92% — 3.7 GPA", ...]

Standard US grading scale reference

A clean, accurate reference of the US letter grade system. Use it to build grading tools, populate dropdowns, seed databases, or document course policies.

This US grading scale reference lists all 12 letter grades from A to F with their percentage ranges and GPA values in text, JSON, and HTML formats. Used by developers building gradebook apps, teachers writing syllabi, and students understanding grade cutoffs. Based on the standard US academic grading scale with plus and minus grades.

Complete scale

All 12 grade levels from A to F including every plus and minus grade with percentage and GPA values.

All 12 letter grades
Percentage ranges
GPA point values

Developer ready

Export as plain text, JSON array, or HTML select options for direct use in gradebook apps and forms.

JSON array format
HTML option tags
Plain text copy

Accurate reference

Based on the standard US academic grading scale used by most high schools and universities.

Standard US scale
Plus and minus grades
GPA aligned values

Implementation tips

Use this data accurately in your application.

Store grades as percentage values in your database and convert to letter grades on display — this makes sorting and filtering much easier.
Always surface the grading scale to students in course documentation so there are no surprises at the end of a semester.
If your institution uses a modified scale, adjust the cutoffs in your own implementation and note the deviation clearly.

Frequently asked questions

Do all US schools use this exact grading scale?>

No. The scale shown is the most common standard, but some schools set A at 90 instead of 93, skip plus and minus grades entirely, or use different cutoffs. Always check your institution's official policy.

What GPA does a B+ correspond to?>

A B+ corresponds to a 3.3 GPA on the standard 4.0 scale. It covers the percentage range of 87 to 89.

Is this scale the same for high school and college?>

Generally yes — most US high schools and colleges follow the same percentage-to-letter mapping. However, weighted GPA calculations for high school may differ when advanced courses are factored in.