Enter a letter grade (such as A+, B-, or C) and select your grading scale to see the corresponding percentage range, GPA points, and grade description. You can also switch between the standard US scale and alternative grading systems to compare how the same letter grade maps to different percentage equivalents.
Percentage Equivalent
--
Percentage Range
--
GPA Points
--
Grade Description
--
Each letter grade corresponds to a percentage range established by your institution's grading scale. For example, on the standard US scale, an A corresponds to 93–96%, while an A+ is 97–100%. To find the percentage, locate your letter grade in the scale table and use the midpoint or the full range as needed.
On the standard US scale: 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 = below 60%. These ranges can vary slightly depending on the institution.
No. Different schools and institutions use different grading scales. Some use a strict scale where a B+ starts at 85%, while others follow the standard US scale where B+ begins at 87%. Always check your institution's official grade policy for the exact conversion used in your courses.
On the standard 4.0 GPA scale: A+ = 4.3, A = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, B- = 2.7, C+ = 2.3, C = 2.0, C- = 1.7, D+ = 1.3, D = 1.0, D- = 0.7, and F = 0.0. Some schools cap the GPA at 4.0 and do not award extra points for A+.
In most educational institutions, a C (typically 73–76%) is considered a passing grade. However, some programs — especially graduate, medical, or nursing programs — may require a minimum B or even B+ to pass specific courses. Always verify the passing threshold for your specific program.
Plus (+) and minus (-) modifiers refine a letter grade to indicate performance near the top or bottom of that grade band. For example, a B+ (87–89%) reflects stronger performance than a plain B (83–86%), which in turn is better than a B- (80–82%). These modifiers usually translate to small differences in GPA as well.
To convert a raw test score to a percentage, divide the number of correct answers by the total number of questions, then multiply by 100. For example, if you got 36 out of 40 correct, your percentage score is (36 ÷ 40) × 100 = 90%, which typically corresponds to an A- on the standard scale.
Not all institutions include plus/minus modifiers in their grading systems. A simplified scale might only use A, B, C, D, and F without any modifiers, mapping each letter directly to a fixed percentage range such as A = 90–100%. The inclusion of +/- grades depends entirely on institutional policy.