20 Out of 28 Grade: Percentage, Letter Grade & GPA
20 out of 28 is 71.43%. That is a C (2.0 GPA) on the standard A–F scale and a C− (1.7 GPA) on the plus-minus scale. It is a passing grade and an average result.
Check Your Own Score
You need 22.4 out of 28 (80%) for the next grade (B).
Key Takeaways
- Percentage: 20/28 = 71.43%
- Letter grade: C (standard), C− (plus-minus), D (7-point scale)
- GPA: 2.0 (standard), 1.7 (plus-minus)
- Passing: Yes, at both the 60% and 70% cutoffs
- Next grade needs: 22.4/28 (80%) for a B
What Does 20 Out of 28 Mean?
Getting 20 out of 28 means 20 correct answers and 8 wrong or missed ones. Each question on a 28-question test is worth 3.57%, so every mistake costs a small but real amount. 8 questions cost you 28.57% of the points. In simple words, you got 20 of 28 questions right, which is about 7.14 out of every 10.
The formula is correct answers ÷ total questions × 100:
20 ÷ 28 × 100 = 71.43%
| Score | Percentage | Standard | Plus-minus | GPA |
|---|---|---|---|---|
| 20/28 | 71.43% | C | C− | 2.0 / 1.7 |
You earned 71.43% of the points and missed 28.57%. Schools use different scales, so check your syllabus.
20/28 as a Fraction, Decimal, Ratio, and Equal Scores
20/28 simplifies to 5/7. As a decimal, it is 0.7143. As a ratio, it is 5:7, and as a percentage, it is 71.43%. It also equals 7.14 out of 10 and 14.29 out of 20. Scores with a different total can be compared by their percentage.
Is 20 Out of 28 a Good Grade?
20 out of 28 is an average result. At 71.43%, you are 0.4 points above the C cutoff and 2.4 points short of a B. It is a safe pass at most schools.
A C often reflects a decent grasp of the main ideas with room to tighten the details. Small habits like re-reading each question and checking calculations can change the grade.
Grading Chart for a 28-Question Test
| Correct | Wrong | Percentage | Standard | Plus-minus |
|---|---|---|---|---|
| 24 | 4 | 85.71% | B | B |
| 23 | 5 | 82.14% | B | B− |
| 22 | 6 | 78.57% | C | C+ |
| 21 | 7 | 75% | C | C |
| 20 | 8 | 71.43% | C | C− |
| 19 | 9 | 67.86% | D | D |
| 18 | 10 | 64.29% | D | D |
| 17 | 11 | 60.71% | D | D |
| 16 | 12 | 57.14% | F | F |
Scores below 17 out of 28 are an F on both scales.
Minimum Score for Each Grade on a 28-Question Test
On the standard scale, a 28-question test needs at least 26 correct for an A, 23 for a B, 20 for a C, and 17 for a D.
| Grade | Cutoff | Points needed | Minimum correct | Your 20/28 |
|---|---|---|---|---|
| A | 90% | 25.2 | 26 | 5.2 short |
| B | 80% | 22.4 | 23 | 2.4 short |
| C | 70% | 19.6 | 20 | 0.4 above |
| D | 60% | 16.8 | 17 | 3.2 above |
How Is the Letter Grade for 20/28 Decided?
The percentage is matched to a grading scale. On the standard scale, 70% up to 80% is a C, so 71.43% is a C. On the plus-minus scale, 70% up to 73% is a C−, so 71.43% is a C−.
| Percentage | Standard | Plus-minus | GPA (standard) |
|---|---|---|---|
| 90–100% | A | A+, A, A− | 4.0 |
| 80–89% | B | B+, B, B− | 3.0 |
| 70–79% | C | C+, C, C− | 2.0 |
| 60–69% | D | D | 1.0 |
| Below 60% | F | F | 0.0 |
How to Use the Calculator Above
Enter the total points (28), then the points you earned (20). To enter a score with decimals, such as 19.75 or 20.33, tick Allow decimal points first. The calculator also shows how many points you need for the next grade, which is 22.4/28 (80%) for a B. Switch to the plus-minus scale to see how the letter changes. You can also check any other score with Easy Grader for teachers.
When 20/28 May Not Match Your Final Grade
The calculator gives the grade for this one score. These six things can change how it counts toward your final grade:
Weighted Categories
A question-based test counts only as much as your teacher weights it. At a 10% weight, 71.43% adds about 7.14 of the 10 available points.
Extra Credit
20/28 plus 1 bonus point becomes 21/28 (75%). Some teachers allow totals above 100%.
Dropped Scores
Some courses drop your lowest quiz or test. If yours does, a weaker score may not count at all.
Curved Tests
A curve changes your raw score before it becomes a percentage. Add the curve first, then divide by the total.
Rounding Rules
Rounding 71.43% to 71% keeps you in the same grade range on both scales, so rounding does not change this grade.
Pass/Fail Courses
Some courses report only pass or fail. In that case your school’s cutoff, often 60% or 70%, decides the result.
If your recorded score ever looks wrong, remember that 20 ÷ 28 is always 71.43%, so ask your teacher to check it.
Real Examples With 20 Out of 28
A weighted test. If this test is worth 10% of your final grade, 71.43% gives you about 7.14 of those 10 points. At a 20% weight, it gives about 14.29 of 20.
Averaging with your next test. If your next 28-question test is a perfect 28/28, the two scores average 85.71%, which is a B. If it is 14/28, they average 60.71%, which is a D.
Reaching the next grade. To reach a B you need 22.4/28 (80%). On a whole-number test, that means 23 correct answers.
How to Improve Your Grade
Moving from a C to a B takes 2.4 points more. Check whether your missed answers were careless mistakes or real knowledge gaps. Careless errors are the fastest to fix because the knowledge is already there.
- Go through the questions you missed and mark each as a careless error or a knowledge gap.
- Fix the careless errors first, because you already know that material.
- Set a target of 22.4/28 on the next test, which is a B on the standard scale.
Frequently Asked Questions
Is 20 Out of 28 a Good Grade?
It is an average grade. 20 out of 28 is 71.43%, a C. It is a pass, but it is not above average.
Is 20 Out of 28 Passing?
Yes. 71.43% clears both common passing marks, 60% and 70%.
What Is 20/28 as a Percentage?
20 ÷ 28 × 100 = 71.43%.
What GPA Is 20 Out of 28?
71.43% equals a 2.0 GPA on the standard A–F scale and a 1.7 GPA on the plus-minus scale.
How Many More Points Do I Need for the Next Grade?
You need 22.4 out of 28 (80%) for a B. That is 2.4 more points than you have now.
How Many Can I Miss on a 28-Question Test and Still Get a C?
You can miss 8 and still get a C on the standard scale, which needs at least 20 out of 28. Missing 9 drops you to 67.86%, a D.
What Grade Is 20 Out of 28 on a 7-Point Scale?
D. A 7-point scale uses cutoffs of 93% (A), 85% (B), 77% (C), and 70% (D), and 20/28 is 71.43%.
What Is 20/28 as a Fraction, Decimal, and Ratio?
20/28 equals 5/7, or 0.7143 as a decimal, and its ratio is 5:7. As a score out of 10, it is 7.14.
Other Scores on a 28-Question Test
Written by
Muhammad Umer Shuaib
Author & Grading Tools Developer, Easy Grader
Muhammad Umer Shuaib builds and maintains the grading calculators on Easy Grader. Before a page goes live, he checks every percentage, letter grade, and GPA conversion against the standard US A–F and plus-minus grading scales, and tests the calculator on real score examples. He writes these guides so students, teachers, and parents can get a clear, accurate answer without doing the math or guessing which scale applies.