# 5 Wrong Out of 30 — What Grade? — Test Grade Calculator

> 5 wrong out of 30 questions gives 83.3% — a B. See the full score, letter grade, and the EZ-grader table for every possible result on a 30-question test.

- **Answer:** 83.3% — B
- **Category:** Education & Grades
- **Interactive calculator:** https://youcalc.com/en/education-grades/test-grade-calculator/5-wrong-out-of-30/
- **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=5&t=30`

| Metric | Value |
| --- | --- |
| Score | 83.3% |
| Letter grade | B |
| Questions correct | 25 / 30 |
| Questions wrong | 5 / 30 |


## Overview

Getting 5 wrong on a 30-question test yields 25 correct and 83.3% — a comfortable B. Each question is worth 3.33 points, so thresholds fall on round numbers every 3 questions: 9 wrong is exactly 70% (the C/D boundary), 6 wrong is 80% (minimum B). Try the full EZ-grader table below for every score from 30/30 down to 0/30.

## 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

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Interactive version: https://youcalc.com/en/education-grades/test-grade-calculator/5-wrong-out-of-30/ · From YouCalc — https://youcalc.com