Enter your percentage score to get your letter grade (A+ through F) and corresponding GPA value on a 4.0 scale. Choose your grading scale — standard US or a custom threshold — and the converter maps your score to the right grade bracket. Perfect for students checking academic standing or comparing grades across courses. Also try the Centor Score Calculator.
Letter Grade
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GPA Value
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Grade Range
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Pass / Fail Status
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The standard US grading scale maps percentage scores to letter grades as follows: A+ (97–100%), A (93–96%), A- (90–92%), B+ (87–89%), B (83–86%), B- (80–82%), C+ (77–79%), C (73–76%), C- (70–72%), D+ (67–69%), D (63–66%), D- (60–62%), and F (0–59%). Different institutions may adjust these thresholds slightly. See also our Age Grade Calculator.
Each letter grade corresponds to a GPA point: A+ is 4.3, A is 4.0, A- is 3.7, B+ is 3.3, B is 3.0, B- is 2.7, C+ is 2.3, C is 2.0, C- is 1.7, D+ is 1.3, D is 1.0, D- is 0.7, and F is 0.0. This converter automatically maps your percentage to the correct GPA value.
In most US grading systems, 70% corresponds to a C- (GPA 1.7), which is generally considered a passing grade. However, some programs — particularly graduate or professional schools — may require a minimum of 73% (C) or higher to pass. Always check your institution's specific requirements.
To earn a straight A, you typically need a score of 93% or above. A score between 90–92% earns an A-, and 97–100% earns an A+. On the simple (no plus/minus) scale, any score 90% and above is an A. You might also find our Readability Score Calculator useful.
No. While the standard US scale is widely used, many schools have their own thresholds. Some high schools treat 90% as the minimum for an A, while others set it at 92% or 93%. Always refer to your school's official grading policy for the most accurate conversion.
A 4.0 GPA corresponds to an A grade, which typically requires a score of 93–96% on the standard plus/minus scale. Some schools that don't use A+ give a 4.0 for any score 90% and above.
A D grade (60–66%) is technically passing in many high school and undergraduate programs, but it may not satisfy prerequisites for advanced courses or meet minimum GPA requirements for scholarships, honors programs, or graduate school admission. D- is the lowest passing grade on the standard scale.
Your percentage score is calculated by dividing the number of points earned by the total points possible, then multiplying by 100. For example, if you scored 42 out of 50, your percentage is (42 / 50) × 100 = 84%, which corresponds to a B on the standard scale.