What Grade Is 28 out of 30? (28/30)
28 out of 30 (28/30) is 93.33%, which rounds to 93%: an A on all three common scales. That is 2 wrong answers and 4.0 GPA points on the 4.0 scale.
- Percentage
- 93.33%
- rounds to 93%
- 10 point letter
- A
- A with +/-, A on 7 point
- Wrong
- 2
- of 30 questions
- 4.0 GPA
- 4.0
- for an A
One more right, one fewer: 29/30 and 27/30
One more right makes it 29 out of 30, a 96.67%: still an A on the 10 point scale. One fewer is 27 out of 30, a 90%, the same A (A- with pluses and minuses). Each question is worth 3.33 percentage points.
28/30 already has the top letter, an A, on every scale; only a perfect score is higher.
Right answers needed for each letter out of 30
| Letter | Percent | Right | From 28/30 |
|---|---|---|---|
| A | 93 to 100 | 28 or more | your score |
| A- | 90 to under 93 | 27 or more | 1 fewer |
| B | 83 to under 87 | 25 or more | 2 fewer |
| B- | 80 to under 83 | 24 or more | 4 fewer |
| C | 73 to under 77 | 22 or more | 5 fewer |
| C- | 70 to under 73 | 21 or more | 7 fewer |
| D | 63 to under 67 | 19 or more | 8 fewer |
| D- | 60 to under 63 | 18 or more | 10 fewer |
| F | below 60 | 17 or fewer | 11 fewer |
Plus and minus scale; the 10 point letter is the plain letter. B+, C+ and D+ cannot happen with whole scores out of 30.
93.33% on other test lengths
28/30 is exactly the same grade as 14 out of 15 and 56 out of 60: 93.33%, an A.
Is 28 out of 30 passing?
Yes. Where passing starts at 60%, which is 18 right out of 30, 28/30 clears it by 10 questions. It also passes where the line is 70% (21 right), as on the 7 point scale. Whether a D passes the class is a separate rule, covered in the passing grade guide.
Out of 30 grade chart with 28/30 marked
| Score | Percent | 10 pt | +/- | 7 pt |
|---|---|---|---|---|
| 30/30 | 100% | A | A | A |
| 29/30 | 96.67% | A | A | A |
| 28/30 | 93.33% | A | A | A |
| 27/30 | 90% | A | A- | B |
| 26/30 | 86.67% | B | B | B |
| 25/30 | 83.33% | B | B | C |
| 24/30 | 80% | B | B- | C |
| 23/30 | 76.67% | C | C | C |
| 22/30 | 73.33% | C | C | D |
| 21/30 | 70% | C | C- | D |
| 20/30 | 66.67% | D | D | F |
| 19/30 | 63.33% | D | D | F |
| 18/30 | 60% | D | D- | F |
| 17/30 | 56.67% | F | F | F |
| 16/30 | 53.33% | F | F | F |
| 15/30 | 50% | F | F | F |
| 14/30 | 46.67% | F | F | F |
| 13/30 | 43.33% | F | F | F |
| 12/30 | 40% | F | F | F |
| 11/30 | 36.67% | F | F | F |
| 10/30 | 33.33% | F | F | F |
| 9/30 | 30% | F | F | F |
| 8/30 | 26.67% | F | F | F |
| 7/30 | 23.33% | F | F | F |
| 6/30 | 20% | F | F | F |
| 5/30 | 16.67% | F | F | F |
| 4/30 | 13.33% | F | F | F |
| 3/30 | 10% | F | F | F |
| 2/30 | 6.67% | F | F | F |
| 1/30 | 3.33% | F | F | F |
| 0/30 | 0% | F | F | F |
Whole scores; the printable out of 30 chart adds a lookup and a CSV download.
How to calculate 28 out of 30 as a percentage
Divide the number right by the number of questions, multiply by 100, then find the band on your school's scale. CurveFox reads the letter from the exact percent, the same rule as the grading scale chart.
Next step: put this test into your class grade with the grade calculator, see what the final needs with the final grade calculator, or curve a whole class with the grade curve calculator.
28/30 as a percent: worked example
You get 28 right on a 30 question test. What is the percent and the letter?
- 28 / 30 = 0.9333 (14/15 in lowest terms)
- 0.9333 x 100 = 93.33%, 93% rounded to a whole percent
- 93.33 is an A on all three scales (93 to 100 with pluses and minuses)
28/30 is 93.33%: an A on all three common scales.
Questions and answers
Is a 28 out of 30 a good grade?
93.33% is an excellent score on the 10 point scale (an A). It is a full A on every scale, 2 questions from a perfect score. It passes on every common scale.
What do I need for the next letter after 28/30?
Nothing higher exists: 28/30 is 93.33%, an A on every scale. Only 30/30 scores more.
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