2 out of 13 as a percentage is 15.38% (F)

A 2/13 is 15.38%, which is an F on the standard grading scale. That is a 0.0 GPA, and you got 11 wrong.

Next grade6 more → D8 out of 13 is 61.54%

With a 5-point curve20.38% → Fif your teacher adds 5 points

To pass (60%)6 more needed8 out of 13 is the passing line

What a 2/13 grade means

2 correct and 11 wrong on a 13-question test.
Each question is worth 7.69%, so every wrong answer costs 7.69 percentage points.
Any score from 0 to 7 out of 13 is an F.
6 more correct (8 out of 13, 61.54%) would make it a D.
It is below a 60% passing score, which needs 8 out of 13: 6 more correct.

Divide the score by the total: 2 ÷ 13 = 0.1538.
Multiply by 100: 0.1538 × 100 = 15.38%.
Find 15.38% 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 15%, 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 13, with 2 highlighted. Pick any score to see its page.

Correct	Wrong	Percentage	Grade
13	0	100%	A
12	1	92.3%	A
11	2	84.6%	B
10	3	76.9%	C
9	4	69.2%	D
8	5	61.5%	D
7	6	53.8%	F
6	7	46.2%	F
5	8	38.5%	F
4	9	30.8%	F
3	10	23.1%	F
2	11	15.4%	F
1	12	7.7%	F
0	13	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, 2.5 out of 13 is 19.23%: an F on the standard scale and an F with plus and minus grades.

5 at most with a 60% passing score: you need 8 out of 13. With a 70% passing score you need 10 out of 13.