What grade is 15 out of 30?
A score of 15 out of 30 points converted to a percentage, letter grade, and GPA value.
Percentage
50%
Letter grade
GPA points
0.0
Failing — below the pass mark
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Percentage
50%
Letter
GPA points
0.0
Failing — below the pass mark
How 15 out of 30 is calculated
(15 ÷ 30) × 100 = 50%Divide the points you earned by the points possible, then multiply by 100. The unrounded result is 50.0000%, which displays as 50%. Letter grades are always compared against the unrounded value, so a borderline score is never nudged into a higher band by early rounding. Scoring 18 out of 30 (60.00%) would move this up to a D-.
15 out of 30 on other grading scales
Not every school uses the same cutoffs. The same 50% can be a different letter depending on the scale your teacher uses.
| Grading scale | Letter for 50% | Notes |
|---|---|---|
| Plus/minus (default) | F | Standard US scale with + and - modifiers. |
| 10-point scale | F | The most common US high school scale. |
| 7-point scale | F | Used by some districts and private schools. |
15 out of 30 outside the US
The pass mark moves a long way between countries — 50% in Australia and Canada, 40% for a UK third, and 33% in the Indian division system. Here is what 50% converts to in each.
| System | Grade for 50% | Notes |
|---|---|---|
| UK honours degree | Lower second (2:2) | First, 2:1, 2:2, Third — the standard UK university classification. |
| Australian university | Pass | High Distinction through Fail, used by most Australian universities. |
| Canadian high school | D | The common provincial scale, where a pass starts at 50%. |
| Indian division system | Second Division | CBSE-style divisions, where a pass starts at 33%. |
| Irish Leaving Certificate | H5 | Higher-level grades H1 to H8, in 10-point bands from 30%. |
How many questions can you miss on a 30-question test?
| Grade | Minimum score | Questions you can miss |
|---|---|---|
| A (90%) | 27 out of 30 | 3 |
| B (80%) | 24 out of 30 | 6 |
| C (70%) | 21 out of 30 | 9 |
| D (60%) | 18 out of 30 | 12 |
See the full 30-question grading scale for every possible score.
Nearby scores
Work out your whole class grade
A single test is only part of your grade. To see how this score moves your overall grade, enter it alongside your other assignments and their weights.
Frequently Asked Questions
15 out of 30 is 50%. Divide 15 by 30 to get 0.5000, then multiply by 100.
50% is a F on the standard US plus/minus scale. On a plain 10-point scale it is F, and on a stricter 7-point scale it is F. Always check the scale printed on your syllabus.
No. 50% falls below the 60% cutoff most schools use for a passing grade, so it would be recorded as an F. You would need at least 18 out of 30 to reach a D.
50% is Lower second (2:2) on the UK honours degree scale, Pass at an Australian university, D on the Canadian high school scale, and Second Division in the Indian division system. The pass mark differs in each — 50% in Australia and Canada, 40% in the UK, and 33% in India.
A F is worth 0.0 grade points on the standard unweighted 4.0 scale. A single test does not set your GPA on its own — it contributes according to its weight in the course.
You need 3 more points, which is 18 out of 30. That clears the 60% cutoff for a D-.
You missed 15 out of 30, which is 50% of the test.