Percentage to Letter Grade Converter: Complete Guide (2025)
Converting percentage to letter grade is essential for students, teachers, and parents. Whether you're in high school, college, or applying for scholarships, understanding how your percentage score translates to A, B, C, or other letter grades can impact your academic future. Our free percentage to letter grade converter instantly calculates your grade using standard or custom scales.
What is a Percentage to Letter Grade Converter?
A percentage to letter grade converter takes a numerical score (e.g., 92.5%) and maps it to a letter grade (A, B+, etc.) based on a predefined grading scale. Most schools use a 0–100% system where:
- 90–100% = A
- 80–89% = B
- 70–79% = C
- 60–69% = D
- Below 60% = F
However, many institutions use plus/minus grading (A+, A-, B+, etc.) or stricter thresholds. Our tool supports all variations.
Standard Grading Scales (2025)
Here are the most common percentage to letter grade scales used in the US, Canada, and internationally:
1. Standard 10-Point Scale (Most Common)
| Letter Grade | Percentage Range | GPA (4.0) |
|---|---|---|
| A | 90–100% | 4.0 |
| B | 80–89% | 3.0 |
| C | 70–79% | 2.0 |
| D | 60–69% | 1.0 |
| F | 0–59% | 0.0 |
2. Plus/Minus Grading Scale (Detailed)
| Letter | Percentage | GPA |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A- | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B- | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| C | 73–76% | 2.0 |
| C- | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| F | 0–62% | 0.0 |
3. High School vs College Grading
- High School: Often stricter (A = 93+, B = 85+)
- College: More lenient (A = 90+, B = 80+)
- AP/IB/Honors: May add +0.5 or +1.0 to GPA
How to Convert Percentage to Letter Grade (Step-by-Step)
Follow these steps to manually convert percentage to letter grade:
- Identify your scale: Check your syllabus or school policy.
- Locate the range: Find where your percentage falls.
- Assign the letter: Match to A, B, C, etc.
- Calculate GPA (optional): Use the GPA column.
Example Conversions
92.5% → Using Plus/Minus Scale:
- Falls in 90–92% → A-
- GPA: 3.7
88% → Using Standard Scale:
- Falls in 80–89% → B
- GPA: 3.0
International Grading Systems
Percentage to letter grade conversion varies globally:
- UK: 70%+ = First Class (A), 60–69% = 2:1 (B)
- India (CBSE): 91–100% = A1, 81–90% = A2
- Canada: 85–100% = A, 80–84% = A-
- Australia: 80–100% = High Distinction (HD)
Why Use Our Percentage to Letter Grade Converter?
- Instant Results: No manual lookup needed.
- Multiple Scales: Standard, plus/minus, high school, college, custom.
- GPA Included: See your 4.0 GPA equivalent.
- Free & Ad-Free Experience: No sign-up required.
- Mobile-Friendly: Works on phone, tablet, or desktop.
Common Questions (FAQ)
Is 89.5% an A or B?
Depends on the scale:
- Standard: 89.5% = B (80–89%)
- Plus/Minus: 89.5% = B+ (87–89%)
- High School: 89.5% = B (85–92%)
What percentage is an A-?
In most plus/minus systems: 90–92%.
Can I convert letter grades back to percentage?
Yes! Use our Letter Grade to Percentage Converter.
How does this affect GPA?
Each letter grade has a GPA value. Our tool shows the 4.0 scale equivalent.
Tips for Improving Your Grade
- Track percentages early in the semester.
- Use our Final Grade Calculator to see what you need on the final exam.
- Aim for consistent 90%+ for A grades.
- Ask teachers about extra credit opportunities.
Conclusion
Use our percentage to letter grade converter to instantly understand your academic standing. Whether you're converting 92% to A-, calculating GPA, or comparing international grades, this tool has you covered. Bookmark it for quick access during exams!
Related Tools: GPA Converter | GPA Calculator | All 40 Academic Converters