21 out of 150 as a percentage
21 / 150 x 100 = 14%
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 21 out of 150 as a Percentage
Divide the numerator by the denominator, then multiply by 100. Using the real numbers:
percent = (X / Y) x 100
percent = (21 / 150) x 100
percent = 0.14 x 100 = 14%
On the standard 10-point letter-grade scale, 14% maps to a letter grade of F, which carries a GPA value of 0.0.
Is 21 out of 150 a Good Score?
14% is a failing score under the standard 10-point grading scale. 21 out of 150 correct means more than 40% of points were lost. A failing grade typically means the course will need to be retaken. Identifying the specific topics missed is the most productive next step.
Score Reference Table — Out of 150
Key scores on a 150-point assessment, with percentages and letter grades. Your score is highlighted.
| Score | Percentage | Letter |
|---|---|---|
| 150/150 | 100% | A |
| 145/150 | 96.7% | A |
| 140/150 | 93.3% | A |
| 135/150 | 90% | A |
| 130/150 | 86.7% | B |
| 125/150 | 83.3% | B |
| 120/150 | 80% | B |
| 115/150 | 76.7% | C |
| 110/150 | 73.3% | C |
| 105/150 | 70% | C |
| 100/150 | 66.7% | D |
| 95/150 | 63.3% | D |
| 90/150 | 60% | D |
| 85/150 | 56.7% | F |
| 80/150 | 53.3% | F |
| 75/150 | 50% | F |
| 70/150 | 46.7% | F |
| 65/150 | 43.3% | F |
| 60/150 | 40% | F |
| 55/150 | 36.7% | F |
| 50/150 | 33.3% | F |
| 45/150 | 30% | F |
| 40/150 | 26.7% | F |
| 35/150 | 23.3% | F |
| 30/150 | 20% | F |
| 25/150 | 16.7% | F |
| 21/150 | 14% | F |
| 20/150 | 13.3% | F |
| 15/150 | 10% | F |
| 10/150 | 6.7% | F |
| 5/150 | 3.3% | F |
| 0/150 | 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)
Grade a Test with These Numbers
If you answered 21 out of 150 questions correctly, your score is 14% — a letter grade of F. You got 129 questions wrong.
Use the Test Grade Calculator (pre-filled for 150 questions, 129 wrong) for a full grading-scale table. Or convert any percentage with the Percent to Letter Grade converter.
Frequently Asked Questions
What is 21 out of 150 as a percentage?
21 out of 150 as a percentage is 14%. The formula is (21 divided by 150) times 100 = 14%. On the standard 10-point grading scale that is an F (0.0 GPA).
Is 21 out of 150 a passing grade?
No — 14% (21/150) is below 60%, which is a failing grade (F) on the standard 10-point scale. In most institutions you would need to retake the course or seek a grade replacement.
How many questions did I get wrong if I scored 21 out of 150?
You got 129 questions wrong out of 150. That is 86% incorrect, leaving you with a score of 14% (F).
Nearby Scores — Out of 150
- 20 out of 150 = 13.3% (F)
- 21 out of 150 = 14% (F) — current
- 22 out of 150 = 14.7% (F)