4 Wrong Out of 20 — What Grade?
80% — B
- Score
- 80%
- Letter grade
- B
- Questions correct
- 16 / 20
- Questions wrong
- 4 / 20
Four wrong answers on a 20-question test lands you at 80% — the exact floor of a B. Each wrong answer costs 5 points, so the margin here is razor-thin: one more mistake drops to 75% (C). If your teacher offers a curve, even +1 point leaves the grade unchanged, but +5 would lift you to 85% (B). Adjust everything in the calculator below.
Test Grade Calculator
Enter the number of questions correct or wrong and instantly see your percentage score, letter grade, and a full EZ-grader reference table.
- Letter grade
- A
- Total questions
- 20
Calculator
EZ-grader reference table
| Wrong | Score | Grade |
|---|---|---|
| 0 | 100% | A |
| 1 | 95% | A |
| 2 | 90% | A |
| 3 | 85% | B |
| 4 | 80% | B |
| 5 | 75% | C |
| 6 | 70% | C |
| 7 | 65% | D |
| 8 | 60% | D |
| 9 | 55% | F |
| 10 | 50% | F |
| 11 | 45% | F |
| 12 | 40% | F |
| 13 | 35% | F |
| 14 | 30% | F |
| 15 | 25% | F |
| 16 | 20% | F |
| 17 | 15% | F |
| 18 | 10% | F |
| 19 | 5% | F |
| 20 | 0% | F |
How it's calculated
The percentage score is computed as percent = (correct / total) × 100 + curvePts, clamped to the interval [0, 100]. The letter grade is then assigned using the standard five-band scale: a percentage of 90 or above earns an A, 80–89 a B, 70–79 a C, 60–69 a D, and anything below 60 an F. These cutoffs are consistent across the two authoritative references used for this calculator: the Calculator.net EZ-grader tool and the ThoughtCo grade-percentage guide. The full reference table is generated by iterating wrong from 0 to total, computing correct = total − wrong for each step, and applying the same formula to produce a row of (wrong, percent, letter) for every possible outcome.
Sources
Reviewed by the YouCalc Team · Last reviewed
Spot a translation issue, a calculation issue, or have a suggestion? Let us know.