11 out of 15 is 73.3%, which is a C on the standard US scale. Each question is worth 6.67 percentage points, so 12 correct is 80% (a B−) and 14 correct is 93.3% (an A).
11 out of 15 in percentage and letter grade
Eleven correct out of fifteen works out at 73.33%. The C band runs from 73% to 76% on the standard scale, so this score lands just inside a C.
A 15-question test is awkward because 100 divided by 15 is 6.67, not a whole number. The scores move in uneven steps of roughly 6.7 points, so the letter bands fall in different places than they do on a 10- or 20-question test.
| Correct | Wrong | Percentage | Letter grade |
|---|---|---|---|
| 15 | 0 | 100% | A |
| 14 | 1 | 93.3% | A |
| 13 | 2 | 86.7% | B |
| 12 | 3 | 80% | B− |
| 11 | 4 | 73.3% | C |
| 10 | 5 | 66.7% | D |
| 9 | 6 | 60% | D− |
| 8 | 7 | 53.3% | F |
What you need for each letter
The wide question steps mean several letters are impossible to land on. There is no C+ and no C− on a 15-question test, because both bands fall between two whole-question scores.
- An A needs 14 correct (93.3%). One wrong answer and the score drops to 86.7%, a B.
- A C is 11 correct at 73.3%. Getting 10 correct drops straight to 66.7%, a D.
- The lowest pass is 9 correct (60%). Missing 7 questions fails the test.
Why one question matters so much
On a 15-question test every question is worth 6.67 points of the final grade. That is more than on a 20-question test, so each mistake costs more.
If you are sitting on 11 out of 15 and want a B, you need one more correct answer to reach 80%. Two more gets you a B at 86.7%.
Check any score
Type the result into the score out of X converter for an instant percentage and letter grade, or open the grading scale for 15 questions for the complete table.
Frequently Asked Questions
What is 11 out of 15 as a percentage?+
11 out of 15 is 73.33%. Divide 11 by 15 to get 0.7333, then multiply by 100.
Is 11 out of 15 a passing grade?+
Yes. 73.3% is a C, and the lowest pass on the standard scale is 60%, which is 9 correct out of 15.
What is 12 out of 15?+
12 out of 15 is 80%, a B− on the standard scale.
What is 10 out of 15?+
10 out of 15 is 66.7%, a D. It is a pass, but only just.
Muhammd Salman
I build and maintain Grade Calculator independently. Every worked example on this site is checked against the underlying formula, with notes on where school or instructor policy can change the result. More about this site →