Scores Out of 27 as Percentages
Every possible score on a 27-question test or assignment, converted to a percentage and letter grade — from 0/27 (0%) all the way to 27/27 (100%). Below the chart you'll find how to do the conversion yourself, the key passing and A-grade thresholds out of 27, and answers to the most common questions.
How to Convert a Score Out of 27 to a Percentage
To convert any score out of 27 to a percentage, divide the score by 27 and multiply by 100:
percent = (score ÷ 27) × 100
example: (25 ÷ 27) × 100 = 92.6%
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 27.
Common Scores Out of 27
The score you need out of 27 to hit each key percentage threshold:
- Passing (D, 60%) 17/27 (63%) D
- Half marks (50%) 13.5/27 (50%) F
- C grade (70%) 19/27 (70.4%) C
- B grade (80%) 22/27 (81.5%) B
- A grade (90%) 25/27 (92.6%) A
- Perfect (100%) 27/27 (100%) A
In short: you need 17/27 to pass (60%) and 25/27 for an A (90%).
Full Grade Chart — Every Score Out of 27
| Score | Percentage | Letter Grade | Wrong |
|---|---|---|---|
| 0/27 | 0% | F | 27 |
| 1/27 | 3.7% | F | 26 |
| 2/27 | 7.4% | F | 25 |
| 3/27 | 11.1% | F | 24 |
| 4/27 | 14.8% | F | 23 |
| 5/27 | 18.5% | F | 22 |
| 6/27 | 22.2% | F | 21 |
| 7/27 | 25.9% | F | 20 |
| 8/27 | 29.6% | F | 19 |
| 9/27 | 33.3% | F | 18 |
| 10/27 | 37% | F | 17 |
| 11/27 | 40.7% | F | 16 |
| 12/27 | 44.4% | F | 15 |
| 13/27 | 48.1% | F | 14 |
| 14/27 | 51.9% | F | 13 |
| 15/27 | 55.6% | F | 12 |
| 16/27 | 59.3% | F | 11 |
| 17/27 | 63% | D | 10 |
| 18/27 | 66.7% | D | 9 |
| 19/27 | 70.4% | C | 8 |
| 20/27 | 74.1% | C | 7 |
| 21/27 | 77.8% | C | 6 |
| 22/27 | 81.5% | B | 5 |
| 23/27 | 85.2% | B | 4 |
| 24/27 | 88.9% | B | 3 |
| 25/27 | 92.6% | A | 2 |
| 26/27 | 96.3% | A | 1 |
| 27/27 | 100% | A | 0 |
Letter Grade Breakdown
Letter grades out of 27 use the standard 10-point scale:
- A — 90% and above (25/27 or higher)
- B — 80% to 89.9% (22/27 or higher)
- C — 70% to 79.9% (19/27 or higher)
- D — 60% to 69.9% (17/27 or higher)
- F — below 60% (under 17/27)
Frequently Asked Questions
What is a passing score out of 27?
On the standard 10-point scale, 60% is the passing threshold (a D). Out of 27, that means you need at least 17 correct to pass — 17/27 works out to 63%. Anything below 17/27 falls under 60% and is a failing grade.
How many questions can you get wrong out of 27 and still pass?
You can miss up to 10 questions out of 27 and still pass. Getting 17/27 correct gives you 63% (a D, the lowest passing grade). Miss more than 10 and you drop below 60%.
How many can you get wrong out of 27 and still get an A?
To earn an A you need 90% or higher. Out of 27, that means at least 25 correct (25/27 = 92.6%), so you can afford to miss at most 2 questions.
What is half of 27 as a percentage?
Half of 27 is 13.5, and 13.5/27 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 27 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 27 is first converted to a percentage — divide by 27 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 27-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.