What Grade Is 18 out of 30? (18/30)
18 out of 30 (18/30) is 60%: a D on the 10 point scale, a D- with pluses and minuses and an F on the 7 point scale. That is 12 wrong answers and 0.7 GPA points on the 4.0 scale.
- Percentage
- 60%
- 18 / 30 x 100
- 10 point letter
- D
- D- with +/-, F on 7 point
- Wrong
- 12
- of 30 questions
- 4.0 GPA
- 0.7
- for a D-
One more right, one fewer: 19/30 and 17/30
One more right makes it 19 out of 30, a 63.33%: still a D on the 10 point scale. One fewer is 17 out of 30, a 56.67%, an F. Each question is worth 3.33 percentage points.
The next letter up with pluses and minuses is a D at 19/30 (63.33%), 1 more right answer away. On the 10 point scale the next step is a C at 21/30, 3 questions away.
Right answers needed for each letter out of 30
| Letter | Percent | Right | From 18/30 |
|---|---|---|---|
| A | 93 to 100 | 28 or more | 10 more right |
| A- | 90 to under 93 | 27 or more | 9 more right |
| B | 83 to under 87 | 25 or more | 7 more right |
| B- | 80 to under 83 | 24 or more | 6 more right |
| C | 73 to under 77 | 22 or more | 4 more right |
| C- | 70 to under 73 | 21 or more | 3 more right |
| D | 63 to under 67 | 19 or more | 1 more right |
| D- | 60 to under 63 | 18 or more | your score |
| F | below 60 | 17 or fewer | 1 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.
60% on other test lengths
18/30 is exactly the same grade as 6 out of 10, 9 out of 15, 12 out of 20, 15 out of 25, 24 out of 40, 30 out of 50 and 36 out of 60: 60%, a D.
Is 18 out of 30 passing?
Yes. Where passing starts at 60%, which is 18 right out of 30, 18/30 lands exactly on that line. Where the line is 70%, as on the 7 point scale, it needs 21 right, 3 more right answers. Whether a D passes the class is a separate rule, covered in the passing grade guide.
Out of 30 grade chart with 18/30 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 18 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.
18/30 as a percent: worked example
You get 18 right on a 30 question test. What is the percent and the letter?
- 18 / 30 = 0.6 (3/5 in lowest terms)
- 0.6 x 100 = 60%
- 60 is in 60 to under 70 on the 10 point scale (D), 60 to under 63 with pluses and minuses (D-) and below 70 on the 7 point scale (F)
18/30 is 60%: a D on the 10 point scale, a D- with pluses and minuses and an F on the 7 point scale.
Questions and answers
Is an 18 out of 30 a good grade?
60% is a weak pass on the 10 point scale (a D). An A takes 27 right, 9 more right answers than 18. It passes where the line is 60% but not where it is 70%.
What do I need for the next letter after 18/30?
19 right out of 30 (63.33%) is a D with pluses and minuses, 1 more question than 18. For a C on the 10 point scale you need 21 right.
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