11 out of 24 as a percentage is 45.83% (F)

An 11/24 is 45.83%, which is an F on the standard grading scale. That is a 0.0 GPA, and you got 13 wrong.

Next grade4 more → D15 out of 24 is 62.5%

With a 5-point curve50.83% → Fif your teacher adds 5 points

To pass (60%)4 more needed15 out of 24 is the passing line

What an 11/24 grade means

11 correct and 13 wrong on a 24-question test.
Each question is worth 4.17%, so every wrong answer costs 4.17 percentage points.
Any score from 0 to 14 out of 24 is an F.
4 more correct (15 out of 24, 62.5%) would make it a D.
It is below a 60% passing score, which needs 15 out of 24: 4 more correct.

Divide the score by the total: 11 ÷ 24 = 0.4583.
Multiply by 100: 0.4583 × 100 = 45.83%.
Find 45.83% on the grading scale: A is 90% and up, B 80%, C 70% and D 60%, so it is an F.

Rounded to a whole number this is 46%, and the letter grade stays the same.

Scale	Cutoffs	Letter
Standard A–F	A 90, B 80, C 70, D 60	F
Plus and minus	A 93, A− 90, B+ 87, B 83, B− 80 …	F
7-point	A 93, B 85, C 77, D 70	F

Which scale applies depends on your school or teacher; the syllabus usually says. The grading scales guide compares them.

Every possible score out of 24, with 11 highlighted. Pick any score to see its page.

Correct	Wrong	Percentage	Grade
24	0	100%	A
23	1	95.8%	A
22	2	91.7%	A
21	3	87.5%	B
20	4	83.3%	B
19	5	79.2%	C
18	6	75%	C
17	7	70.8%	C
16	8	66.7%	D
15	9	62.5%	D
14	10	58.3%	F
13	11	54.2%	F
12	12	50%	F
11	13	45.8%	F
10	14	41.7%	F
9	15	37.5%	F
8	16	33.3%	F
7	17	29.2%	F
6	18	25%	F
5	19	20.8%	F
4	20	16.7%	F
3	21	12.5%	F
2	22	8.3%	F
1	23	4.2%	F
0	24	0%	F

No. Below 60% is an F, a failing grade on the standard US scale.

0.0 on a 4.0 scale, as an F.

With a half point, 11.5 out of 24 is 47.92%: an F on the standard scale and an F with plus and minus grades.

9 at most with a 60% passing score: you need 15 out of 24. With a 70% passing score you need 17 out of 24.