Enter up to 8 scores (leave the rest blank) to get your overall percentage grade and letter grade.
| Input | Result |
|---|---|
| 85, 90, 78, 92 | 86.25% (B) |
| 70, 80, 90, 100, 95 | 87.00% (B) |
| 60, 65 | 62.50% (D) |
A plain average is correct in exactly one situation: every score counts the same toward the final grade. That happens in courses graded on total points (a running tally of earned over possible) or on a flat "all assignments equal" policy. It is not correct when your syllabus assigns category weights, and it is not correct when some assignments are worth more points than others within a points-based course.
| If your syllabus says… | Use |
|---|---|
| "Homework 20%, quizzes 15%, midterm 25%, final 40%" | Weighted grade calculator |
| "Your grade is total points earned ÷ total points possible" | Total points, then this page to convert the percentage |
| "All assignments count equally" or nothing at all | This page, a simple average is correct |
| "You need 80% on the final to reach a B" | Final grade calculator |
An average is sensitive to how many scores are already in it. With only three scores, one failing result is very visible; with twelve, it is barely noticeable. The table shows the effect of swapping a single 60% into an otherwise 88% set:
| Number of scores | Average before | Average after one 60% | Drop |
|---|---|---|---|
| 3 scores | 88.00% | 81.33% | 6.67 points |
| 5 scores | 88.00% | 83.33% | 4.67 points |
| 8 scores | 88.00% | 84.50% | 3.50 points |
| 12 scores | 88.00% | 85.67% | 2.33 points |
This is why the advice to "just do better on the next one" is arithmetically sound: the weight of a poor score shrinks as more work is completed. It also means a bad result early in a term is worth far more effort to replace than the same result in the final week.
This page converts your average using the plain 10-point scale below. Schools with plus/minus grading use tighter bands, see the 4.0 GPA scale for those, and the GPA calculator to turn percentages into grade points.
| Letter | Percentage | Grade points | Usually means |
|---|---|---|---|
| A | 90–100% | 4.0 | Excellent, strong command of the material |
| B | 80–89% | 3.0 | Good, solid understanding, minor gaps |
| C | 70–79% | 2.0 | Satisfactory, meets the basic standard |
| D | 60–69% | 1.0 | Passing but weak, usually not enough for a prerequisite |
| F | below 60% | 0.0 | Failing, no credit earned |
Almost every school publishes a rounding rule, and it decides whether an 89.4% becomes a B+ or an A−. The two policies you will meet:
| Policy | What happens to 89.4% | What happens to 89.5% |
|---|---|---|
| Round half up (most common) | 89% → B | 90% → A |
| Truncate / always round down | 89% → B | 89% → B |
| Round to nearest whole, no half-up | 89% → B | 90% → A only if the school treats .5 as up |
If your score lands on a boundary, check your syllabus before assuming anything, a single point at 89.4% versus 89.5% is the most common grade dispute in middle and high school.
Leave the fields you have not received a score for blank, they are ignored rather than counted as zero. Filling an unknown with 0 is the single most common error students make with grade calculators, and it produces a number that is wrong by a wide margin. Only enter what has actually been graded; then use the final grade calculator to see what the remaining work needs to deliver.
This is the lookup most people arrive here for: turn a score out of 100 straight into a percentage and a letter. Every row below is computed from the same points earned ÷ points possible fraction the variant pages use, so the answer here matches a dedicated score page exactly.
| Score | Percentage | Letter (+/−) | Grade points | Plain 10-point |
|---|---|---|---|---|
| 95 out of 100 | 95% | A | 4.0 | A |
| 92 out of 100 | 92% | A− | 3.7 | A |
| 90 out of 100 | 90% | A− | 3.7 | A |
| 88 out of 100 | 88% | B+ | 3.3 | B |
| 85 out of 100 | 85% | B | 3.0 | B |
| 82 out of 100 | 82% | B− | 2.7 | B |
| 80 out of 100 | 80% | B− | 2.7 | B |
| 78 out of 100 | 78% | C+ | 2.3 | C |
| 75 out of 100 | 75% | C | 2.0 | C |
| 72 out of 100 | 72% | C− | 1.7 | C |
| 70 out of 100 | 70% | C− | 1.7 | C |
| 68 out of 100 | 68% | D+ | 1.3 | D |
| 65 out of 100 | 65% | D | 1.0 | D |
| 63 out of 100 | 63% | D | 1.0 | D |
| 60 out of 100 | 60% | D− | 0.7 | D |
| 58 out of 100 | 58% | F | 0.0 | F |
| 55 out of 100 | 55% | F | 0.0 | F |
The busiest single number is 70 out of 100, which is exactly 70%, a C− with plus/minus grading (1.7 grade points) or a plain C on the 10-point scale. It is worth knowing that 70% sits exactly on a boundary: the C− band runs from 70 to 72, so this score is on its bottom edge. One point lower (69%) drops to D+, while reaching 73% moves you up to C (2.0 points). That is why a single point either side of 70 changes both the letter and the grade points, even though the percentage barely moves.
Quizzes and assignments are rarely marked out of 100. Here are the denominators that come up most often, pre-converted with the same rule: percentage = points earned ÷ points possible × 100.
| Score | Percentage | Letter (+/−) | Plain 10-point |
|---|---|---|---|
| 9 out of 10 | 90% | A− | A |
| 8 out of 10 | 80% | B− | B |
| 7 out of 10 | 70% | C− | C |
| 6 out of 10 | 60% | D− | D |
| 11 out of 12 | 91.67% | A− | A |
| 10 out of 12 | 83.33% | B | B |
| 9 out of 12 | 75% | C | C |
| 8 out of 12 | 66.67% | D | D |
| 14 out of 15 | 93.33% | A | A |
| 13 out of 15 | 86.67% | B | B |
| 12 out of 15 | 80% | B− | B |
| 11 out of 15 | 73.33% | C | C |
| 19 out of 20 | 95% | A | A |
| 18 out of 20 | 90% | A− | A |
| 17 out of 20 | 85% | B | B |
| 16 out of 20 | 80% | B− | B |
| 15 out of 20 | 75% | C | C |
| 14 out of 20 | 70% | C− | C |
| 13 out of 20 | 65% | D | D |
| 12 out of 20 | 60% | D− | D |
| 11 out of 20 | 55% | F | F |
| 24 out of 25 | 96% | A | A |
| 23 out of 25 | 92% | A− | A |
| 22 out of 25 | 88% | B+ | B |
| 21 out of 25 | 84% | B | B |
| 20 out of 25 | 80% | B− | B |
| 18 out of 25 | 72% | C− | C |
| 28 out of 30 | 93.33% | A | A |
| 27 out of 30 | 90% | A− | A |
| 26 out of 30 | 86.67% | B | B |
| 25 out of 30 | 83.33% | B | B |
| 31 out of 32 | 96.88% | A | A |
| 30 out of 32 | 93.75% | A | A |
| 29 out of 32 | 90.62% | A− | A |
| 28 out of 32 | 87.5% | B+ | B |
| 26 out of 32 | 81.25% | B− | B |
| 24 out of 32 | 75% | C | C |
| 38 out of 40 | 95% | A | A |
| 36 out of 40 | 90% | A− | A |
| 35 out of 40 | 87.5% | B+ | B |
| 32 out of 40 | 80% | B− | B |
| 45 out of 50 | 90% | A− | A |
| 42 out of 50 | 84% | B | B |
| 40 out of 50 | 80% | B− | B |
| 38 out of 50 | 76% | C | C |
| 35 out of 50 | 70% | C− | C |
No, if your syllabus weights categories (e.g. homework 20%, final 40%), use the weighted grade calculator instead. A simple average is correct only when every score counts equally.
Up to 8. Leave unused fields blank, they are ignored, not counted as zero.