Percentage to GPA & Letter Grade Calculator

Convert percentage scores to GPA and letter grades instantly

 

Calculator Settings

Current Grade Scale
A: 90-100%
B: 80-89%
C: 70-79%
D: 60-69%
F: Below 60%
Enter Percentage Scores

Understanding Percentage to GPA Conversion

Converting percentage scores to GPA (Grade Point Average) and letter grades is a fundamental aspect of academic assessment in the United States education system. Whether you're a student interpreting your grades, a teacher calculating final marks, or an academic advisor helping with transcript evaluation, understanding this conversion process is essential.

How Percentage to GPA Conversion Works

The conversion from percentage to GPA follows established academic standards. Most US institutions use a 4.0 scale where:

Standard US Grading Scale

A (90-100%) = 4.0 GPA

B (80-89%) = 3.0 GPA

C (70-79%) = 2.0 GPA

D (60-69%) = 1.0 GPA

F (Below 60%) = 0.0 GPA

+/- variations adjust by 0.3 points

Detailed Conversion Example

Let's convert an 87.5% score step by step:

Step 1: Determine Letter Grade
• 87.5% falls in the 87-89.9% range
• This corresponds to a B+ grade

Step 2: Convert to GPA
• Base B grade = 3.0 GPA
• Plus (+) modifier = +0.3
• Final GPA = 3.3

Summary: 87.5% → B+ → 3.3 GPA

Weighted vs. Unweighted GPA

It's important to distinguish between two types of GPA scales:

Unweighted GPA (4.0 Scale)

• Standard academic courses

• Maximum 4.0 regardless of difficulty

• Used for standard transcript calculations

Weighted GPA (5.0 Scale)

• Honors, AP, or IB courses

• Maximum 5.0 for advanced courses

• Rewards challenging coursework

Importance of Accurate Conversion

Accurate percentage-to-GPA conversion is crucial for:

  • College Admissions: Admissions committees use GPA to compare applicants
  • Scholarship Eligibility: Many scholarships have minimum GPA requirements
  • Academic Standing: Institutions use GPA for probation, honors, and graduation requirements
  • Graduate School: Advanced programs often have strict GPA cutoffs

Different institutions may use slightly different conversion scales. Always check with your specific school or program for their exact conversion guidelines.

Important Disclaimer: Use these calculations as an informatory basis. Do not make legal, academic, financial, or professional decisions solely based on this tool's output. Always consult with your educational institution for official grade conversions and academic advising.

Frequently Asked Questions

Unweighted GPA uses a 4.0 scale where all courses are treated equally. Weighted GPA uses a 5.0 scale (or higher) where honors, AP, or IB courses receive extra points to reward more challenging coursework. This calculator supports both systems.

This calculator uses standard US academic conversion scales. However, accuracy depends on your institution's specific grading policies. Some schools may use different percentage ranges or +/- variations. Always verify with your school's official grading policy.

Yes! This calculator supports both single and multiple entry modes. In multiple entry mode, you can input several percentage scores and calculate individual conversions plus an average GPA across all entries.

This calculator includes a custom scale option. You can adjust the percentage ranges for each grade and set your maximum GPA value. However, for official academic purposes, always use your institution's specific conversion guidelines.

Absolutely! This calculator provides CSV export for spreadsheet use and PDF report generation for official documentation. Both options include all conversion details, grade scales used, and the required disclaimer.