Grade Calculator
Convert any score to a percentage and letter grade. Plus: find out exactly what grade you need on your final exam to reach your target course grade.
Score to percentage & letter grade
Enter the points you scored and the total possible points to get your percentage grade and letter grade.
What grade do I need on my final?
Enter your current grade, the weight of the final exam, and the overall grade you want to achieve. The calculator shows exactly what you need to score.
Want more examples and a full formula explainer? See the dedicated calculator →
Letter grade scale
The standard US letter grade scale used by most schools and colleges:
| Letter grade | Percentage range | GPA points | Meaning |
|---|---|---|---|
| A+ | 97–100% | 4.0 | Exceptional |
| A | 93–96% | 4.0 | Excellent |
| A− | 90–92% | 3.7 | Excellent |
| B+ | 87–89% | 3.3 | Above average |
| B | 83–86% | 3.0 | Above average |
| B− | 80–82% | 2.7 | Above average |
| C+ | 77–79% | 2.3 | Average |
| C | 73–76% | 2.0 | Average |
| C− | 70–72% | 1.7 | Average |
| D+ | 67–69% | 1.3 | Below average |
| D | 60–66% | 1.0 | Below average |
| F | Below 60% | 0.0 | Failing |
How to use the "what grade do I need?" calculator
The formula is: Required = (Target − Current × (1 − Final weight ÷ 100)) ÷ (Final weight ÷ 100). For example, if your current grade is 78%, the final is worth 30%, and you want an 80% overall: Required = (80 − 78 × 0.70) ÷ 0.30 = (80 − 54.6) ÷ 0.30 = 84.67%. You would need a 84.67% on the final.
Frequently asked questions
Divide your score by the total points and multiply by 100. Score of 38 out of 45: (38 ÷ 45) × 100 = 84.4%.
Use the "What grade do I need?" calculator above. Enter your current grade, the weight of the final (e.g. 30%), and your target (e.g. 60% to pass or 70% for a C). The calculator shows exactly what score you need.
75% is a C+ on the standard US grading scale (73–79% range is a C/C+).
90 out of 100 is 90%, which is an A− on the standard US scale (90–92% = A−, 93–100% = A/A+).
Yes — completely free, no signup, no ads. All calculations run instantly in your browser.