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Out of 25 Grade Calculator
Enter your points and this calculator turns a score out of 25 into a percentage and a letter grade. It also shows how many more points you needed for the next letter. The formula is score ÷ 25 × 100. For example, 21 out of 25 is 21 ÷ 25 = 0.84, and 0.84 × 100 = 84%, which is a B on the College Board style scale and a B on a plain 10-point scale.
Each point out of 25 is worth exactly 4%, which makes this scale easy to work out by hand: multiply the score by 4. So 18/25 is 72%, 20/25 is 80% and 23/25 is 92%.
On a plain 10-point scale you need 22.5/25 for an A (90%), 20 for a B, 17.5 for a C and 15 for a D. The College Board style scale adds plus and minus grades and moves the D cut-off to 65%, which is 16.25/25. Schools set their own scales, so use the one in your syllabus if it differs. If your test had a different total, for example extra-credit questions, change the ‘Out of’ box and the calculator still works.
Result and step-by-step working
Letter grade: B on the College Board style (A+ 97, A 93, A− 90 … D 65) scale
- Divide the score by the total21 ÷ 25 = 0.84.
- Multiply by 1000.84 × 100 = 84% (4 points lost, 16% of the total).
- Look up the letter84% is a B. The next letter, B+, starts at 87%, which is 21.75 out of 25 (0.75 more points).
| Letter | Starts at | Minimum score out of 25 |
|---|---|---|
| A+ | 97% | 24.25 |
| A | 93% | 23.25 |
| A− | 90% | 22.5 |
| B+ | 87% | 21.75 |
| B | 83% | 20.75 |
| B− | 80% | 20 |
| C+ | 77% | 19.25 |
| C | 73% | 18.25 |
| C− | 70% | 17.5 |
| D+ | 67% | 16.75 |
| D | 65% | 16.25 |
Out of 25 grade chart
Every score (in half points) from 25 down to 0, with the percentage and the letter grade on two common US scales. College Board style: A+ 97, A 93, A− 90, B+ 87, B 83, B− 80, C+ 77, C 73, C− 70, D+ 67, D 65, F below 65. Plain 10-point: A 90, B 80, C 70, D 60, F below 60.
| Score | Percent | Letter (College Board style) | Letter (plain 10-point) |
|---|---|---|---|
| 25/25 | 100% | A+ | A |
| 24.5/25 | 98% | A+ | A |
| 24/25 | 96% | A | A |
| 23.5/25 | 94% | A | A |
| 23/25 | 92% | A− | A |
| 22.5/25 | 90% | A− | A |
| 22/25 | 88% | B+ | B |
| 21.5/25 | 86% | B | B |
| 21/25 | 84% | B | B |
| 20.5/25 | 82% | B− | B |
| 20/25 | 80% | B− | B |
| 19.5/25 | 78% | C+ | C |
| 19/25 | 76% | C | C |
| 18.5/25 | 74% | C | C |
| 18/25 | 72% | C− | C |
| 17.5/25 | 70% | C− | C |
| 17/25 | 68% | D+ | D |
| 16.5/25 | 66% | D | D |
| 16/25 | 64% | F | D |
| 15.5/25 | 62% | F | D |
| 15/25 | 60% | F | D |
| 14.5/25 | 58% | F | F |
| 14/25 | 56% | F | F |
| 13.5/25 | 54% | F | F |
| 13/25 | 52% | F | F |
| 12.5/25 | 50% | F | F |
| 12/25 | 48% | F | F |
| 11.5/25 | 46% | F | F |
| 11/25 | 44% | F | F |
| 10.5/25 | 42% | F | F |
| 10/25 | 40% | F | F |
| 9.5/25 | 38% | F | F |
| 9/25 | 36% | F | F |
| 8.5/25 | 34% | F | F |
| 8/25 | 32% | F | F |
| 7.5/25 | 30% | F | F |
| 7/25 | 28% | F | F |
| 6.5/25 | 26% | F | F |
| 6/25 | 24% | F | F |
| 5.5/25 | 22% | F | F |
| 5/25 | 20% | F | F |
| 4.5/25 | 18% | F | F |
| 4/25 | 16% | F | F |
| 3.5/25 | 14% | F | F |
| 3/25 | 12% | F | F |
| 2.5/25 | 10% | F | F |
| 2/25 | 8% | F | F |
| 1.5/25 | 6% | F | F |
| 1/25 | 4% | F | F |
| 0.5/25 | 2% | F | F |
| 0/25 | 0% | F | F |
Frequently asked questions
- What is 18 out of 25 as a percentage?
- 18 ÷ 25 × 100 = 72%. That is a C− on the College Board style scale and a C on a plain 10-point scale.
- What is 20 out of 25 as a percentage?
- 20 ÷ 25 × 100 = 80%. That is a B− on the College Board style scale and a B on a plain 10-point scale.
- What is 22 out of 25 as a percentage?
- 22 ÷ 25 × 100 = 88%. That is a B+ on the College Board style scale and a B on a plain 10-point scale.
- How many points can I lose out of 25 and still get an A?
- An A starts at 90% on a plain 10-point scale, which is 22.5/25. With whole-point marking you can lose 2 points. On the College Board style scale an A (not A−) starts at 93%, which is 23.25/25.
- What is a passing score out of 25?
- With a 60% pass mark you need 15/25. With a 65% pass mark, as on the College Board style scale, you need 16.25/25. Some courses pass at 50% (12.5/25); check your syllabus.
Last reviewed: October 9, 2026. Calculations run in your browser; nothing you enter is sent anywhere.