Out of 31 Grade Chart
Every possible score on a 31-question or 31-point test, quiz or assignment, with the percentage and letter grade. Each question is worth 3.23%.
A range (90%+)
28/31
Miss up to 3
B range (80%+)
25/31
Miss up to 6
C range (70%+)
22/31
Miss up to 9
D range (60%+)
19/31
Miss up to 12
| Score | Wrong | Percent | Letter | GPA |
|---|---|---|---|---|
| 31/31 | 0 | 100% | A+ | 4.0 |
| 30/31 | 1 | 96.77% | A | 4.0 |
| 29/31 | 2 | 93.55% | A | 4.0 |
| 28/31 | 3 | 90.32% | A- | 3.7 |
| 27/31 | 4 | 87.1% | B+ | 3.3 |
| 26/31 | 5 | 83.87% | B | 3.0 |
| 25/31 | 6 | 80.65% | B- | 2.7 |
| 24/31 | 7 | 77.42% | C+ | 2.3 |
| 23/31 | 8 | 74.19% | C | 2.0 |
| 22/31 | 9 | 70.97% | C- | 1.7 |
| 21/31 | 10 | 67.74% | D+ | 1.3 |
| 20/31 | 11 | 64.52% | D | 1.0 |
| 19/31 | 12 | 61.29% | D- | 0.7 |
| 18/31 | 13 | 58.06% | F | 0.0 |
| 17/31 | 14 | 54.84% | F | 0.0 |
| 16/31 | 15 | 51.61% | F | 0.0 |
| 15/31 | 16 | 48.39% | F | 0.0 |
| 14/31 | 17 | 45.16% | F | 0.0 |
| 13/31 | 18 | 41.94% | F | 0.0 |
| 12/31 | 19 | 38.71% | F | 0.0 |
| 11/31 | 20 | 35.48% | F | 0.0 |
| 10/31 | 21 | 32.26% | F | 0.0 |
| 9/31 | 22 | 29.03% | F | 0.0 |
| 8/31 | 23 | 25.81% | F | 0.0 |
| 7/31 | 24 | 22.58% | F | 0.0 |
| 6/31 | 25 | 19.35% | F | 0.0 |
| 5/31 | 26 | 16.13% | F | 0.0 |
| 4/31 | 27 | 12.9% | F | 0.0 |
| 3/31 | 28 | 9.68% | F | 0.0 |
| 2/31 | 29 | 6.45% | F | 0.0 |
| 1/31 | 30 | 3.23% | F | 0.0 |
| 0/31 | 31 | 0% | F | 0.0 |
How to calculate a grade out of 31
Percent = score ÷ 31 × 100
For example, 25 out of 31 is 25 ÷ 31 = 0.8065, × 100 = 80.65%, a B-. Every question you miss costs 3.23 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 31 as a percentage?
26/31 is 83.87%, which is a B on the standard U.S. grading scale (3.0 GPA points). That's 5 wrong. One more point (27/31) would make it a B+.
What is 25 out of 31 as a percentage?
25/31 is 80.65%, which is a B- on the standard U.S. grading scale (2.7 GPA points). That's 6 wrong. One more point (26/31) would make it a B.
What is 23 out of 31 as a percentage?
23/31 is 74.19%, which is a C on the standard U.S. grading scale (2.0 GPA points). That's 8 wrong. One more point (24/31) would make it a C+.
What is 30 out of 31 as a percentage?
30/31 is 96.77%, which is an A on the standard U.S. grading scale (4.0 GPA points). That's 1 wrong. One more point (31/31) would make it an A+.
What is 29 out of 31 as a percentage?
29/31 is 93.55%, which is an A on the standard U.S. grading scale (4.0 GPA points). That's 2 wrong. 2 more points (31/31) would make it an A+.
How many can you miss out of 31 and still get an A?
You can miss 3 and still get at least 90% (an A-). 28/31 = 90.32%.