Out of 30 Grade Chart
Every possible score on a 30-question or 30-point test, quiz or assignment, with the percentage and letter grade. Each question is worth 3.33%.
A range (90%+)
27/30
Miss up to 3
B range (80%+)
24/30
Miss up to 6
C range (70%+)
21/30
Miss up to 9
D range (60%+)
18/30
Miss up to 12
| Score | Wrong | Percent | Letter | GPA |
|---|---|---|---|---|
| 30/30 | 0 | 100% | A+ | 4.0 |
| 29/30 | 1 | 96.67% | A | 4.0 |
| 28/30 | 2 | 93.33% | A | 4.0 |
| 27/30 | 3 | 90% | A- | 3.7 |
| 26/30 | 4 | 86.67% | B | 3.0 |
| 25/30 | 5 | 83.33% | B | 3.0 |
| 24/30 | 6 | 80% | B- | 2.7 |
| 23/30 | 7 | 76.67% | C | 2.0 |
| 22/30 | 8 | 73.33% | C | 2.0 |
| 21/30 | 9 | 70% | C- | 1.7 |
| 20/30 | 10 | 66.67% | D | 1.0 |
| 19/30 | 11 | 63.33% | D | 1.0 |
| 18/30 | 12 | 60% | D- | 0.7 |
| 17/30 | 13 | 56.67% | F | 0.0 |
| 16/30 | 14 | 53.33% | F | 0.0 |
| 15/30 | 15 | 50% | F | 0.0 |
| 14/30 | 16 | 46.67% | F | 0.0 |
| 13/30 | 17 | 43.33% | F | 0.0 |
| 12/30 | 18 | 40% | F | 0.0 |
| 11/30 | 19 | 36.67% | F | 0.0 |
| 10/30 | 20 | 33.33% | F | 0.0 |
| 9/30 | 21 | 30% | F | 0.0 |
| 8/30 | 22 | 26.67% | F | 0.0 |
| 7/30 | 23 | 23.33% | F | 0.0 |
| 6/30 | 24 | 20% | F | 0.0 |
| 5/30 | 25 | 16.67% | F | 0.0 |
| 4/30 | 26 | 13.33% | F | 0.0 |
| 3/30 | 27 | 10% | F | 0.0 |
| 2/30 | 28 | 6.67% | F | 0.0 |
| 1/30 | 29 | 3.33% | F | 0.0 |
| 0/30 | 30 | 0% | F | 0.0 |
How to calculate a grade out of 30
Percent = score ÷ 30 × 100
For example, 24 out of 30 is 24 ÷ 30 = 0.8, × 100 = 80%, a B-. Every question you miss costs 3.33 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 26 out of 30 as a percentage?
26/30 is 86.67%, which is a B on the standard U.S. grading scale (3.0 GPA points). That's 4 wrong. One more point (27/30) would make it a B+.
What is 24 out of 30 as a percentage?
24/30 is 80%, which is a B- on the standard U.S. grading scale (2.7 GPA points). That's 6 wrong. One more point (25/30) would make it a B.
What is 23 out of 30 as a percentage?
23/30 is 76.67%, which is a C on the standard U.S. grading scale (2.0 GPA points). That's 7 wrong. One more point (24/30) would make it a C+.
What is 29 out of 30 as a percentage?
29/30 is 96.67%, which is an A on the standard U.S. grading scale (4.0 GPA points). That's 1 wrong. One more point (30/30) would make it an A+.
What is 28 out of 30 as a percentage?
28/30 is 93.33%, which is an A on the standard U.S. grading scale (4.0 GPA points). That's 2 wrong. 2 more points (30/30) would make it an A+.
How many can you miss out of 30 and still get an A?
You can miss 3 and still get at least 90% (an A-). 27/30 = 90%.