# 4 Wrong Out of 20 — What Grade? — Test Grade Calculator

> 4 wrong out of 20 questions gives 80% — a B. See the full score, letter grade, and the EZ-grader reference table for every possible 20-question score.

- **Answer:** 80% — B
- **Category:** Education & Grades
- **Interactive calculator:** https://youcalc.com/en/education-grades/test-grade-calculator/4-wrong-out-of-20/
- **Price:** Free, no sign-up required
- **Full calculator:** [Test Grade Calculator](https://youcalc.com/en/education-grades/test-grade-calculator/)
- **Pre-filled inputs:** `m=wrong&n=4&t=20`

| Metric | Value |
| --- | --- |
| Score | 80% |
| Letter grade | B |
| Questions correct | 16 / 20 |
| Questions wrong | 4 / 20 |


## Overview

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.

## Method

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.

## Related calculators

- [Weighted Grade Calculator](https://youcalc.com/en/education-grades/weighted-grade-calculator/)
- [Grade Percentage to Letter Grade & GPA Calculator](https://youcalc.com/en/education-grades/grade-percentage-letter/)
- [Final Grade Calculator](https://youcalc.com/en/education-grades/final-grade-calculator/)

## Sources

- https://www.calculator.net/test-grade-calculator.html
- https://www.thoughtco.com/how-to-calculate-your-grade-2086709

---

Interactive version: https://youcalc.com/en/education-grades/test-grade-calculator/4-wrong-out-of-20/ · From YouCalc — https://youcalc.com