Out of 20 Grade Chart
Every possible score on a 20-question or 20-point test, quiz or assignment, with the percentage and letter grade. Each question is worth 5%.
A range (90%+)
18/20
Miss up to 2
B range (80%+)
16/20
Miss up to 4
C range (70%+)
14/20
Miss up to 6
D range (60%+)
12/20
Miss up to 8
| Score | Wrong | Percent | Letter | GPA |
|---|---|---|---|---|
| 20/20 | 0 | 100% | A+ | 4.0 |
| 19/20 | 1 | 95% | A | 4.0 |
| 18/20 | 2 | 90% | A- | 3.7 |
| 17/20 | 3 | 85% | B | 3.0 |
| 16/20 | 4 | 80% | B- | 2.7 |
| 15/20 | 5 | 75% | C | 2.0 |
| 14/20 | 6 | 70% | C- | 1.7 |
| 13/20 | 7 | 65% | D | 1.0 |
| 12/20 | 8 | 60% | D- | 0.7 |
| 11/20 | 9 | 55% | F | 0.0 |
| 10/20 | 10 | 50% | F | 0.0 |
| 9/20 | 11 | 45% | F | 0.0 |
| 8/20 | 12 | 40% | F | 0.0 |
| 7/20 | 13 | 35% | F | 0.0 |
| 6/20 | 14 | 30% | F | 0.0 |
| 5/20 | 15 | 25% | F | 0.0 |
| 4/20 | 16 | 20% | F | 0.0 |
| 3/20 | 17 | 15% | F | 0.0 |
| 2/20 | 18 | 10% | F | 0.0 |
| 1/20 | 19 | 5% | F | 0.0 |
| 0/20 | 20 | 0% | F | 0.0 |
How to calculate a grade out of 20
Percent = score ÷ 20 × 100
For example, 16 out of 20 is 16 ÷ 20 = 0.8, × 100 = 80%, a B-. Every question you miss costs 5 percentage points, so the gap between letters is often a single question.
Letters follow the standard U.S. plus/minus grading scale. If your teacher uses different cutoffs (like 93/85/77/70), build a custom chart with the EZ Grader. For a single score, the test grade calculator is quickest.
Common questions
What is 17 out of 20 as a percentage?
17/20 is 85%, which is a B on the standard U.S. grading scale (3.0 GPA points). That's 3 wrong. One more point (18/20) would make it a B+.
What is 16 out of 20 as a percentage?
16/20 is 80%, which is a B- on the standard U.S. grading scale (2.7 GPA points). That's 4 wrong. One more point (17/20) would make it a B.
What is 15 out of 20 as a percentage?
15/20 is 75%, which is a C on the standard U.S. grading scale (2.0 GPA points). That's 5 wrong. One more point (16/20) would make it a C+.
What is 19 out of 20 as a percentage?
19/20 is 95%, which is an A on the standard U.S. grading scale (4.0 GPA points). That's 1 wrong. One more point (20/20) would make it an A+.
What is 18 out of 20 as a percentage?
18/20 is 90%, which is an A- on the standard U.S. grading scale (3.7 GPA points). That's 2 wrong. One more point (19/20) would make it an A.
How many can you miss out of 20 and still get an A?
You can miss 2 and still get at least 90% (an A-). 18/20 = 90%.