15 out of 18 as a percentage

83.3% — B approx. 3.0 GPA

15 / 18 x 100 = 83.3%

Letter grades here use the standard 10-point scale (A 90+, B 80+, C 70+, D 60+, F below 60). Your school's scale may differ — check your syllabus, or use the Test Grade Calculator where the scale is configurable.

How to Calculate 15 out of 18 as a Percentage

Divide the numerator by the denominator, then multiply by 100. Using the real numbers:

percent = (X / Y) x 100

percent = (15 / 18) x 100

percent = 0.8333 x 100 = 83.3%

On the standard 10-point letter-grade scale, 83.3% maps to a letter grade of B, which carries a GPA value of 3.0.

Is 15 out of 18 a Good Score?

83.3% is a solid, above-average score. Getting 15 out of 18 correct shows a good understanding of the subject. A B grade is respectable and signals you have a firm grasp of the core concepts, even if there is room to push into A territory.

Score Reference Table — Out of 18

All 19 possible scores on a 18-point assessment, with percentages and letter grades. Your score is highlighted.

Score Percentage Letter
18/18 100% A
17/18 94.4% A
16/18 88.9% B
15/18 83.3% B
14/18 77.8% C
13/18 72.2% C
12/18 66.7% D
11/18 61.1% D
10/18 55.6% F
9/18 50% F
8/18 44.4% F
7/18 38.9% F
6/18 33.3% F
5/18 27.8% F
4/18 22.2% F
3/18 16.7% F
2/18 11.1% F
1/18 5.6% F
0/18 0% F

Letter Grade Breakdown

  • A — 90% and above (4.0 GPA)
  • B — 80%–89.9% (3.0 GPA)
  • C — 70%–79.9% (2.0 GPA)
  • D — 60%–69.9% (1.0 GPA)
  • F — below 60% (0.0 GPA)

If you answered 15 out of 18 questions correctly, your score is 83.3% — a letter grade of B. You got 3 questions wrong.

Use the Test Grade Calculator (pre-filled for 18 questions, 3 wrong) for a full grading-scale table. Or convert any percentage with the Percent to Letter Grade converter.

Frequently Asked Questions

What is 15 out of 18 as a percentage?

15 out of 18 as a percentage is 83.3%. The formula is (15 divided by 18) times 100 = 83.3%. On the standard 10-point grading scale that is a B (3.0 GPA).

Is 15 out of 18 a passing grade?

Yes — 83.3% (15/18) is a passing score on the standard 10-point scale. It earns a letter grade of B. Most courses require at least 60% (a D) to pass, though some programs require a C (70%) or higher for credit toward your major.

How many questions did I get wrong if I scored 15 out of 18?

You got 3 questions wrong out of 18. That is 16.7% incorrect, leaving you with a score of 83.3% (B).

Nearby Scores — Out of 18

See all scores out of 18 →