Grade Percentage Chart: A+ Through F
The standard US grade percentage scale divides the 0 to 100 percent range into 13 letter grades using plus and minus modifiers. Each letter tier covers a 10-percentage-point band: A (90-100), B (80-89), C (70-79), D (60-69), and F (below 60). Plus and minus variants subdivide each band into three sub-bands of roughly three to four points each. The chart below maps letter grades to percentages, listing every grade with its exact percentage range, GPA value, and academic standing. Use it as a letter grading to percentage reference for any assignment score, test, or final course grade on the standard scale used by most US colleges and high schools.
Grades and Letters to Percentages: Full Scale Table
| Letter Grade | Percentage Range | 4.0 GPA | Standing |
|---|---|---|---|
| A+ | 97 - 100% | 4.0* | Excellent |
| A | 93 - 96% | 4.0 | Excellent |
| A- | 90 - 92% | 3.7 | Excellent |
| B+ | 87 - 89% | 3.3 | Good |
| B | 83 - 86% | 3.0 | Good |
| B- | 80 - 82% | 2.7 | Good |
| 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 | 63 - 66% | 1.0 | Below average |
| D- | 60 - 62% | 0.7 | Below average |
| F | Below 60% | 0.0 | Failing |
* A+ GPA = 4.0 at most US colleges; a minority award 4.3 on an extended scale.
The pass threshold sits at 60 percent on the standard scale: any score at or above 60 earns a D- or higher and passes the course. Some institutions and many high school departments raise the floor to 70 percent, which removes the D tier and makes C- (70-72%) the lowest passing grade. Always verify the specific passing cutoff with your course syllabus or registrar. Sources: National Center for Education Statistics grade-distribution surveys and College Board grade-conversion guidance.
How to Calculate Grade Percentage
Grade percentage is the ratio of points earned to points possible, expressed as a number from 0 to 100. The formula works for any individual score or an entire unweighted course where all assignments carry equal point values.
Step-by-Step Grade Percentage Calculation
To calculate grade percentage for any assignment or test, follow three steps. First, find the points you earned, which your teacher marks on the returned paper or posts in the gradebook. Second, find the total points possible, usually printed on the test header or assignment sheet. Third, divide earned by possible and multiply by 100. A score of 36 out of 40 is 36 / 40 x 100 = 90.0%, which is an A- on the standard plus/minus scale.
Grade Percentage for a Weighted Course
When a course assigns different weights to assignments, tests, and participation, calculate each category percentage separately, multiply each by its weight, then add the results. If tests are worth 60 percent of the final grade and you average 78% on tests, and homework is worth 40 percent and you average 92%, the course percentage is (0.60 x 78) + (0.40 x 92) = 46.8 + 36.8 = 83.6%, which is a B. Use the grade calculator for multi-category courses where weights and scores vary across many assignments.
Letter Grading to Percentage Ranges by Tier: A Through F
Each letter tier spans a 10-point band, split into plus, bare, and minus sub-grades. GPA values step down by 0.3 at each sub-grade (B+ = 3.3, B = 3.0, B- = 2.7). The ranges and GPA values for each letter are in the sections below.
A Grade Percentage: 90 to 100%
The A tier covers 90 to 100 percent: A+ is 97 to 100 (4.0 GPA), A is 93 to 96 (4.0 GPA), and A- is 90 to 92 (3.7 GPA). An A is excellent academic standing at every US institution. A+ and A carry the same 4.0 GPA value at most schools, though some use a 4.3 scale where A+ earns an additional 0.3 points. Scoring in the A tier typically satisfies the most demanding program prerequisites and keeps most scholarship GPA thresholds well within reach.
B Grade Percentage: 80 to 89%
The B tier covers 80 to 89 percent: B+ is 87 to 89 (3.3 GPA), B is 83 to 86 (3.0 GPA), and B- is 80 to 82 (2.7 GPA). A B is good academic standing, above the 2.0 minimum required for most graduation requirements and above the 2.5 threshold many honors programs set. Most graduate school applications use a B average (3.0 GPA) as the informal floor for competitive programs, making consistent B performance the practical target for students planning postgraduate study.
C Grade Percentage: 70 to 79%
The C tier covers 70 to 79 percent: C+ is 77 to 79 (2.3 GPA), C is 73 to 76 (2.0 GPA), and C- is 70 to 72 (1.7 GPA). A C is average standing and passes most general-education requirements. The complication arises in major courses: many science, engineering, nursing, and business programs require a C or C+ as the prerequisite floor, not just a passing D. A student earning a C- in a chemistry prerequisite may technically pass but still be blocked from enrolling in the next course in the sequence.
D Grade Percentage: 60 to 69%
The D tier covers 60 to 69 percent: D+ is 67 to 69 (1.3 GPA), D is 63 to 66 (1.0 GPA), and D- is 60 to 62 (0.7 GPA). A D passes the course and earns elective credit at most institutions, but it rarely satisfies a major or program requirement. Students who earn a D in a core prerequisite often need to retake the course, since the next course in the sequence typically requires a C or better. On a strict scale where F begins at 70%, the D tier does not exist, and any score from 60 to 69 percent is a failing grade on that system.
F Grade Percentage: Below 60%
An F is awarded for any final course score below 60 percent on the standard scale (below 70% on strict-scale systems). An F earns 0.0 GPA points and does not grant course credit. It remains on the transcript and lowers the cumulative GPA. Most colleges allow a retake, but policies differ on whether both grades remain on record or the second grade replaces the first. A single F in a 15-credit semester can drop a 3.5 GPA by roughly 0.2 points. Checking your grade percentage before the add/drop deadline, while a course-change is still possible, is the most effective form of insurance.
Grade Percentage Lookup: Popular Scores
The most commonly searched score percentages are listed below. Each shows the exact grade percentage and letter grade for that fraction. For any score not listed, use the test grade calculator to enter points earned and total possible and get the percentage and letter grade instantly.
Browse Every Grade Percentage by Total Points
Every score covered here, grouped by total points possible. Open a group to see each fraction with its exact percentage and letter grade. For any score not listed, the test grade calculator converts points earned and total possible into a percentage and letter grade instantly.
Out of 3 1 score
Out of 15 16 scores
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Out of 44 15 scores
Out of 45 24 scores
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Out of 60 28 scores
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Out of 80 25 scores
Out of 94 1 score
Out of 100 56 scores
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