Use this Score Lookup and Grade Percentage Chart to instantly convert any test, quiz, exam, homework, or assignment score into a percentage, letter grade, GPA equivalent, and pass/fail result.
Simply enter your score earned and total possible score into the lookup tool, or browse the grade charts below to find your exact result in seconds.
Students, teachers, parents, and tutors commonly search for:
- What is 16 out of 20 as a percentage?
- What is 13 out of 15 as a grade?
- What grade is 70%?
- What is my test score as a letter grade?
- How many questions can I miss and still get an A?
- What is a passing grade?
This page provides instant score conversions, percentage charts, grading scales, and quick reference tables without requiring manual calculations.
Score Lookup Tool
How to Calculate a Percentage Grade
To find a percentage grade, divide the score earned by the total possible score, then multiply by 100:
Percentage Grade = (Score Earned ÷ Total Possible Score) × 100
Examples:
- 7 out of 10 = 70%
- 15 out of 20 = 75%
- 18 out of 20 = 90%
- 13 out of 15 = 86.7%
This same formula applies whether you're scoring a quiz by correct answers, a project by points, or an exam by marks. For courses where different assignments carry different weights (tests worth more than homework, for example), the math works differently, see how weighted grading works on a syllabus or use the Syllabus Grade Calculator for that calculation.
Standard U.S. Letter Grade Scale
| Percentage | Letter Grade | GPA |
|---|---|---|
| 90–100% | A | 4.0 |
| 80–89% | B | 3.0 |
| 70–79% | C | 2.0 |
| 60–69% | D | 1.0 |
| Below 60% | F | 0.0 |
This is the standard 10-point scale used across this site and recognized by most US K–12 schools and colleges. Some schools use a Plus/Minus variant for more precise differentiation, see the table below if that applies to you.
Plus/Minus Scale (secondary reference)
| Percentage | Letter Grade | GPA |
|---|---|---|
| 97–100% | A+ | 4.0 |
| 93–96% | A | 4.0 |
| 90–92% | A− | 3.7 |
| 87–89% | B+ | 3.3 |
| 83–86% | B | 3.0 |
| 80–82% | B− | 2.7 |
| 77–79% | C+ | 2.3 |
| 73–76% | C | 2.0 |
| 70–72% | C− | 1.7 |
| 67–69% | D+ | 1.3 |
| 63–66% | D | 1.0 |
| 60–62% | D− | 0.7 |
| Below 60% | F | 0.0 |
Not sure which scale your class uses? The Teacher Grader lets you switch between Standard, Plus/Minus, and Pass/Fail and applies it automatically to every score.
Why Two Students Can Get the Same Letter Grade With Different Percentages?
A letter grade is a range, not a single number. A student who scores 81% and a student who scores 89% both earn a B on the standard scale, even though their raw performance differs by 8 points. This is intentional — letter grades exist to make academic performance easy to compare across different tests, classes, and schools, without requiring everyone to track exact percentages.
A 90% on a 10-question quiz and a 90% on a 50-question final both convert to an A, even though one test had five times more material. The letter grade normalizes for test length, which raw percentage alone doesn't do.
Quick Score Lookup by Test Size
Find your test size, then locate your score in the table below. Each table covers the full realistic scoring range for that test size. Scores below roughly 45% are rare lookups in practice. If yours falls outside these tables, the above tool gives an instant answer for any score.
10-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 10 | 0 | 100% | A |
| 9 | 1 | 90% | A |
| 8 | 2 | 80% | B |
| 7 | 3 | 70% | C |
| 6 | 4 | 60% | D |
| 5 | 5 | 50% | F |
12-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 12 | 0 | 100% | A |
| 11 | 1 | 91.7% | A |
| 10 | 2 | 83.3% | B |
| 9 | 3 | 75% | C |
| 8 | 4 | 66.7% | D |
| 7 | 5 | 58.3% | F |
| 6 | 6 | 50% | F |
13-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 13 | 0 | 100% | A |
| 12 | 1 | 92.3% | A |
| 11 | 2 | 84.6% | B |
| 10 | 3 | 76.9% | C |
| 9 | 4 | 69.2% | D |
| 8 | 5 | 61.5% | D |
| 7 | 6 | 53.8% | F |
15-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 15 | 0 | 100% | A |
| 14 | 1 | 93.3% | A |
| 13 | 2 | 86.7% | B |
| 12 | 3 | 80% | B |
| 11 | 4 | 73.3% | C |
| 10 | 5 | 66.7% | D |
| 9 | 6 | 60% | D |
| 8 | 7 | 53.3% | F |
| 7 | 8 | 46.7% | F |
16-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 16 | 0 | 100% | A |
| 15 | 1 | 93.8% | A |
| 14 | 2 | 87.5% | B |
| 13 | 3 | 81.2% | B |
| 12 | 4 | 75% | C |
| 11 | 5 | 68.8% | D |
| 10 | 6 | 62.5% | D |
| 9 | 7 | 56.2% | F |
| 8 | 8 | 50% | F |
18-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 18 | 0 | 100% | A |
| 17 | 1 | 94.4% | A |
| 16 | 2 | 88.9% | B |
| 15 | 3 | 83.3% | B |
| 14 | 4 | 77.8% | C |
| 13 | 5 | 72.2% | C |
| 12 | 6 | 66.7% | D |
| 11 | 7 | 61.1% | D |
| 10 | 8 | 55.6% | F |
| 9 | 9 | 50% | F |
20-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 20 | 0 | 100% | A |
| 19 | 1 | 95% | A |
| 18 | 2 | 90% | A |
| 17 | 3 | 85% | B |
| 16 | 4 | 80% | B |
| 15 | 5 | 75% | C |
| 14 | 6 | 70% | C |
| 13 | 7 | 65% | D |
| 12 | 8 | 60% | D |
| 11 | 9 | 55% | F |
| 10 | 10 | 50% | F |
| 9 | 11 | 45% | F |
25-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 25 | 0 | 100% | A |
| 24 | 1 | 96% | A |
| 23 | 2 | 92% | A |
| 22 | 3 | 88% | B |
| 21 | 4 | 84% | B |
| 20 | 5 | 80% | B |
| 19 | 6 | 76% | C |
| 18 | 7 | 72% | C |
| 17 | 8 | 68% | D |
| 16 | 9 | 64% | D |
| 15 | 10 | 60% | D |
| 14 | 11 | 56% | F |
| 13 | 12 | 52% | F |
| 12 | 13 | 48% | F |
30-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 30 | 0 | 100% | A |
| 29 | 1 | 96.7% | A |
| 28 | 2 | 93.3% | A |
| 27 | 3 | 90% | A |
| 26 | 4 | 86.7% | B |
| 25 | 5 | 83.3% | B |
| 24 | 6 | 80% | B |
| 23 | 7 | 76.7% | C |
| 22 | 8 | 73.3% | C |
| 21 | 9 | 70% | C |
| 20 | 10 | 66.7% | D |
| 19 | 11 | 63.3% | D |
| 18 | 12 | 60% | D |
| 17 | 13 | 56.7% | F |
| 16 | 14 | 53.3% | F |
| 15 | 15 | 50% | F |
| 14 | 16 | 46.7% | F |
40-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 40 | 0 | 100% | A |
| 39 | 1 | 97.5% | A |
| 38 | 2 | 95% | A |
| 37 | 3 | 92.5% | A |
| 36 | 4 | 90% | A |
| 35 | 5 | 87.5% | B |
| 34 | 6 | 85% | B |
| 33 | 7 | 82.5% | B |
| 32 | 8 | 80% | B |
| 31 | 9 | 77.5% | C |
| 30 | 10 | 75% | C |
| 29 | 11 | 72.5% | C |
| 28 | 12 | 70% | C |
| 27 | 13 | 67.5% | D |
| 26 | 14 | 65% | D |
| 25 | 15 | 62.5% | D |
| 24 | 16 | 60% | D |
| 23 | 17 | 57.5% | F |
| 22 | 18 | 55% | F |
| 21 | 19 | 52.5% | F |
| 20 | 20 | 50% | F |
50-Question Test
| Correct | Wrong | Percentage | Letter Grade |
|---|---|---|---|
| 50 | 0 | 100% | A |
| 49 | 1 | 98% | A |
| 48 | 2 | 96% | A |
| 47 | 3 | 94% | A |
| 46 | 4 | 92% | A |
| 45 | 5 | 90% | A |
| 44 | 6 | 88% | B |
| 43 | 7 | 86% | B |
| 42 | 8 | 84% | B |
| 41 | 9 | 82% | B |
| 40 | 10 | 80% | B |
| 39 | 11 | 78% | C |
| 38 | 12 | 76% | C |
| 37 | 13 | 74% | C |
| 36 | 14 | 72% | C |
| 35 | 15 | 70% | C |
| 34 | 16 | 68% | D |
| 33 | 17 | 66% | D |
| 32 | 18 | 64% | D |
| 31 | 19 | 62% | D |
| 30 | 20 | 60% | D |
| 29 | 21 | 58% | F |
| 28 | 22 | 56% | F |
Need a chart for a different test size? The Easy Grader generates a custom chart for any number of questions from 1 to 200, with PDF download.
Most Popular Score Conversions
The following score conversions are among the most frequently searched by students and teachers.
| Score | Percentage | Letter Grade |
|---|---|---|
| 18 out of 20 | 90% | A |
| 16 out of 20 | 80% | B |
| 14 out of 20 | 70% | C |
| 13 out of 15 | 86.7% | B |
| 12 out of 15 | 80% | B |
| 27 out of 30 | 90% | A |
| 24 out of 30 | 80% | B |
| 22 out of 25 | 88% | B |
| 32 out of 40 | 80% | B |
| 40 out of 50 | 80% | B |
If you don't see your score listed, use the lookup tool above to instantly calculate any percentage and grade.
Grade Percentage Chart vs Grade Calculators
Although both tools help evaluate academic performance, they serve different purposes.
| Tool | Best Use |
|---|---|
| Grade Percentage Chart | Quickly look up a known score |
| Test Grade Calculator | Calculate grades and what-if scenarios |
| Easy Grader | Generate printable grading charts |
| Teacher Grader | Apply different grading scales automatically |
| Class Grader | Grade entire classes and assignments |
| Extra Credit Calculator | Calculate bonus-point impact |
| Syllabus Grade Calculator | Calculate weighted course grades |
If you already know your score, use this Grade Percentage Chart. If you're planning, predicting, or analyzing grades, use the appropriate calculator above.
How Many Questions Can You Miss and Still Get an A?
One of the most common grading questions is how many mistakes you can make while still earning an A.
20-Question Test
- Miss 0–2 questions = A
- Miss 3 questions = B
30-Question Test
- Miss 0–3 questions = A
- Miss 4 questions = B
50-Question Test
- Miss 0–5 questions = A
- Miss 6 questions = B
Because percentages determine letter grades, the number of questions you can miss depends on the total number of questions on the test.
Understanding GPA Equivalents
This page displays GPA values using the standard unweighted 4.0 grading scale:
- A = 4.0
- B = 3.0
- C = 2.0
- D = 1.0
- F = 0.0
Important: Schools may use weighted GPA systems, 4.3 scales, 5.0 scales, honors weighting, AP weighting, or custom grading policies. Always verify GPA calculations with your school or course syllabus.
Why Students Use Score Lookup Charts
Score lookup charts help students quickly understand academic performance without doing manual calculations.
They are commonly used for:
- Quiz scores
- Test scores
- Exam scores
- Classroom assessments
- Grading rubrics
- Course grades
- Report cards
- Gradebook reviews
- Homework scores
- Academic progress tracking
Because every percentage is already calculated, score lookup charts provide a fast way to check results immediately after receiving a test or assignment.
FAQs:
What is a percentage scale?
A percentage scale is the full 0–100% range used to express how much of a possible score was earned before it's converted into a letter grade.
Is 65 percent a passing grade?
Yes. 65% is typically a D on the standard grading scale, which is considered passing in most U.S. schools where 60% is the minimum passing score. Some schools require 70% or higher, so check your school's grading policy.
What grade is 88 percent?
88% is generally a B on the standard grading scale (80–89% range), equivalent to a 3.0 GPA on an unweighted 4.0 scale.
How do you calculate a percentage grade?
Divide the score earned by the total possible score, then multiply by 100. For example, 16 ÷ 20 × 100 = 80%.
Why is my percentage different from the letter grade my teacher gave me?
Your school may use a different grading scale, curved grading, plus/minus grading, weighted categories, or teacher-specific policies. The percentage calculation is usually correct, but the letter-grade conversion can vary.
What is 16 out of 20 as a percentage?
16 out of 20 equals 80%. Divide 16 by 20 and multiply by 100. An 80% score is typically a B grade.
What is 17 out of 20?
17 out of 20 equals 85%. Divide 17 by 20 and multiply by 100. A score of 85% is generally a B grade.
What is 18 out of 20?
18 out of 20 equals 90%. Divide 18 by 20 and multiply by 100. A score of 90% is generally an A grade.
What is 13 out of 20?
13 out of 20 equals 65%. Divide 13 by 20 and multiply by 100. A 65% score is typically a D grade.
What is 22 out of 25 as a percentage?
22 out of 25 equals 88%. Divide 22 by 25 and multiply by 100. An 88% score is generally a B grade.
What is 27 out of 30 as a percentage?
27 out of 30 equals 90%. Divide 27 by 30 and multiply by 100. A score of 90% is generally an A grade.
What is 26 out of 30?
26 out of 30 equals 86.7%. Divide 26 by 30 and multiply by 100. An 86.7% score is generally a B grade.
What is 35 out of 50 as a percentage?
35 out of 50 equals 70%. Divide 35 by 50 and multiply by 100. A score of 70% is generally a C grade.
What is 40 out of 50?
40 out of 50 equals 80%. Divide 40 by 50 and multiply by 100. An 80% score is generally a B grade.
What is 13 out of 15 as a grade?
13 out of 15 equals 86.7%. Divide 13 by 15 and multiply by 100. An 86.7% score is typically a B grade on the standard grading scale.
What is 11 out of 15 as a grade?
11 out of 15 equals 73.3%. Divide 11 by 15 and multiply by 100. A 73.3% score is generally considered a C grade.
What is 11 out of 12 as a percentage?
11 out of 12 equals 91.7%. Divide 11 by 12 and multiply by 100. A score of 91.7% is typically an A grade.
What is 9 out of 12 as a grade?
9 out of 12 equals 75%. Divide 9 by 12 and multiply by 100. A 75% score is generally considered a C grade.
What is 12 out of 13 as a percentage?
12 out of 13 equals 92.3%. Divide 12 by 13 and multiply by 100. A score of 92.3% is typically an A grade.
What is 10 out of 13 as a grade?
10 out of 13 equals 76.9%. Divide 10 by 13 and multiply by 100. A 76.9% score is generally considered a C grade.
What is 14 out of 18 as a percentage?
14 out of 18 equals 77.8%. Divide 14 by 18 and multiply by 100. A score of 77.8% is generally considered a C grade.
What is 16 out of 18 as a percentage?
16 out of 18 equals 88.9%. Divide 16 by 18 and multiply by 100. An 88.9% score is typically a B grade.
What is 17 out of 18 as a percentage?
17 out of 18 equals 94.4%. Divide 17 by 18 and multiply by 100. A score of 94.4% is typically an A grade.
What is a 21 out of 25 grade?
21 out of 25 equals 84%. Divide 21 by 25 and multiply by 100. An 84% score is generally considered a B grade.
What is 24 out of 25 as a percentage?
24 out of 25 equals 96%. Divide 24 by 25 and multiply by 100. A score of 96% is typically an A grade.
What is 18 out of 25 as a percentage?
18 out of 25 equals 72%. Divide 18 by 25 and multiply by 100. A 72% score is generally considered a C grade.
What is 23 out of 30 as a grade?
23 out of 30 equals 76.7%. Divide 23 by 30 and multiply by 100. A 76.7% score is generally considered a C grade.
What is 28 out of 30 as a percentage?
28 out of 30 equals 93.3%. Divide 28 by 30 and multiply by 100. A score of 93.3% is typically an A grade.
What is 32 out of 40 as a percentage?
32 out of 40 equals 80%. Divide 32 by 40 and multiply by 100. An 80% score is generally considered a B grade.
What is 31 out of 40 as a percentage?
31 out of 40 equals 77.5%. Divide 31 by 40 and multiply by 100. A 77.5% score is generally considered a C grade.
What is 43 out of 50 as a percentage?
43 out of 50 equals 86%. Divide 43 by 50 and multiply by 100. An 86% score is generally considered a B grade.
What is 38 out of 50 as a percentage?
38 out of 50 equals 76%. Divide 38 by 50 and multiply by 100. A 76% score is generally considered a C grade.
What is a 7 out of 8 score as a grade?
7 out of 8 equals 87.5%. Divide 7 by 8 and multiply by 100. An 87.5% score is generally considered a B grade.
What is 6 out of 8 as a grade?
6 out of 8 equals 75%. Divide 6 by 8 and multiply by 100. A 75% score is generally considered a C grade.
What is 9 out of 11 as a grade?
9 out of 11 equals 81.8%. Divide 9 by 11 and multiply by 100. An 81.8% score is generally considered a B grade.
What percentage do you need to get an A?
On the standard grading scale, a score of 90% or higher is typically considered an A grade.
What percentage do you need to pass a test?
Most schools consider 60% the minimum passing grade. However, some schools require 70% or higher, so always check your school's grading policy.
Is 80 percent a good grade?
Yes. An 80% score is generally considered a B grade and reflects above-average academic performance.
Is 70 percent a good grade?
A 70% score is typically considered a C grade. It represents satisfactory performance and is passing in most schools.
How many questions can I miss and still get an A?
The number depends on the total questions in the test. For example, on a 20-question test, you can usually miss up to 2 questions and still earn an A.
Why do schools use letter grades?
Letter grades provide a simple way to summarize academic performance and make score interpretation easier for students, parents, teachers, and schools.