Scores Out of 24 as Percentages
Every possible score on a 24-question test or assignment, converted to a percentage and letter grade — from 0/24 (0%) all the way to 24/24 (100%). Below the chart you'll find how to do the conversion yourself, the key passing and A-grade thresholds out of 24, and answers to the most common questions.
How to Convert a Score Out of 24 to a Percentage
To convert any score out of 24 to a percentage, divide the score by 24 and multiply by 100:
percent = (score ÷ 24) × 100
example: (22 ÷ 24) × 100 = 91.7%
The resulting percentage is then mapped to a letter grade on the standard 10-point scale. The full table below has already done this for every score out of 24.
Common Scores Out of 24
The score you need out of 24 to hit each key percentage threshold:
- Passing (D, 60%) 15/24 (62.5%) D
- Half marks (50%) 12/24 (50%) F
- C grade (70%) 17/24 (70.8%) C
- B grade (80%) 20/24 (83.3%) B
- A grade (90%) 22/24 (91.7%) A
- Perfect (100%) 24/24 (100%) A
In short: you need 15/24 to pass (60%) and 22/24 for an A (90%).
Full Grade Chart — Every Score Out of 24
| Score | Percentage | Letter Grade | Wrong |
|---|---|---|---|
| 0/24 | 0% | F | 24 |
| 1/24 | 4.2% | F | 23 |
| 2/24 | 8.3% | F | 22 |
| 3/24 | 12.5% | F | 21 |
| 4/24 | 16.7% | F | 20 |
| 5/24 | 20.8% | F | 19 |
| 6/24 | 25% | F | 18 |
| 7/24 | 29.2% | F | 17 |
| 8/24 | 33.3% | F | 16 |
| 9/24 | 37.5% | F | 15 |
| 10/24 | 41.7% | F | 14 |
| 11/24 | 45.8% | F | 13 |
| 12/24 | 50% | F | 12 |
| 13/24 | 54.2% | F | 11 |
| 14/24 | 58.3% | F | 10 |
| 15/24 | 62.5% | D | 9 |
| 16/24 | 66.7% | D | 8 |
| 17/24 | 70.8% | C | 7 |
| 18/24 | 75% | C | 6 |
| 19/24 | 79.2% | C | 5 |
| 20/24 | 83.3% | B | 4 |
| 21/24 | 87.5% | B | 3 |
| 22/24 | 91.7% | A | 2 |
| 23/24 | 95.8% | A | 1 |
| 24/24 | 100% | A | 0 |
Letter Grade Breakdown
Letter grades out of 24 use the standard 10-point scale:
- A — 90% and above (22/24 or higher)
- B — 80% to 89.9% (20/24 or higher)
- C — 70% to 79.9% (17/24 or higher)
- D — 60% to 69.9% (15/24 or higher)
- F — below 60% (under 15/24)
Frequently Asked Questions
What is a passing score out of 24?
On the standard 10-point scale, 60% is the passing threshold (a D). Out of 24, that means you need at least 15 correct to pass — 15/24 works out to 62.5%. Anything below 15/24 falls under 60% and is a failing grade.
How many questions can you get wrong out of 24 and still pass?
You can miss up to 9 questions out of 24 and still pass. Getting 15/24 correct gives you 62.5% (a D, the lowest passing grade). Miss more than 9 and you drop below 60%.
How many can you get wrong out of 24 and still get an A?
To earn an A you need 90% or higher. Out of 24, that means at least 22 correct (22/24 = 91.7%), so you can afford to miss at most 2 questions.
What is half of 24 as a percentage?
Half of 24 is 12, and 12/24 is exactly 50%. Under the standard 10-point scale that is a failing grade (F), since 50% is below the 60% passing line.
Is a score out of 24 graded on a 10-point scale?
Most US schools use the standard 10-point scale regardless of the denominator: A is 90%+, B is 80%+, C is 70%+, D is 60%+, and anything below 60% is an F. A raw score out of 24 is first converted to a percentage — divide by 24 and multiply by 100 — then mapped to a letter. Your own school's cutoffs may differ, so check your syllabus.
Related Tools
- Test Grade Calculator — grade any 24-question test interactively; enter the number wrong and get your score plus a printable grading scale.
- Percent to Letter Grade converter — turn any percentage into its letter grade on the standard scale.
- GPA Calculator — roll individual course grades and credit hours into a weighted or unweighted GPA.