Free Online Grade Calculator
Calculate test grades, percentages, and letter grades instantly. Enter your total questions below to generate a complete grading table.
Enter total questions (1 - 1,000) or click a preset above.
| Wrong | Correct | %Percentage | GradeLetter Grade |
|---|---|---|---|
| 0 | 50 | 100% | A |
| 1 | 49 | 98% | A |
| 2 | 48 | 96% | A |
| 3 | 47 | 94% | A |
| 4 | 46 | 92% | A |
| 5 | 45 | 90% | A |
| 6 | 44 | 88% | B |
| 7 | 43 | 86% | B |
| 8 | 42 | 84% | B |
| 9 | 41 | 82% | B |
| 10 | 40 | 80% | B |
| 11 | 39 | 78% | C |
| 12 | 38 | 76% | C |
| 13 | 37 | 74% | C |
| 14 | 36 | 72% | C |
| 15 | 35 | 70% | C |
| 16 | 34 | 68% | D |
| 17 | 33 | 66% | D |
| 18 | 32 | 64% | D |
| 19 | 31 | 62% | D |
| 20 | 30 | 60% | D |
| 21 | 29 | 58% | F |
| 22 | 28 | 56% | F |
| 23 | 27 | 54% | F |
| 24 | 26 | 52% | F |
| 25 | 25 | 50% | F |
| 26 | 24 | 48% | F |
| 27 | 23 | 46% | F |
| 28 | 22 | 44% | F |
| 29 | 21 | 42% | F |
| 30 | 20 | 40% | F |
| 31 | 19 | 38% | F |
| 32 | 18 | 36% | F |
| 33 | 17 | 34% | F |
| 34 | 16 | 32% | F |
| 35 | 15 | 30% | F |
| 36 | 14 | 28% | F |
| 37 | 13 | 26% | F |
| 38 | 12 | 24% | F |
| 39 | 11 | 22% | F |
| 40 | 10 | 20% | F |
| 41 | 9 | 18% | F |
| 42 | 8 | 16% | F |
| 43 | 7 | 14% | F |
| 44 | 6 | 12% | F |
| 45 | 5 | 10% | F |
| 46 | 4 | 8% | F |
| 47 | 3 | 6% | F |
| 48 | 2 | 4% | F |
| 49 | 1 | 2% | F |
| 50 | 0 | 0% | F |
How to Use the Grade Calculator
- 1
Enter the total number of questions for your test or assignment in the input field above.
- 2
Review the generated grading table to see scores for every possible number of wrong answers.
- 3
Find the corresponding percentage and letter grade based on the correct answers.
Grade Calculation Formula
The calculator determines your percentage using a simple formula:
Example: If a student gets 43 correct answers out of a total 50 questions:
43 ÷ 50 × 100 = 86%
Understanding the Grading Scale
By default, this tool uses a common grading scale (A=90%, B=80%, C=70%, D=60%, F=<60%).
However, educational institutions vary widely. You can customize the scale by clicking the "Grading Scale" button to match your school's specific thresholds.
Related Grade Tools
Grading Scale Calculator
Build custom grading scales, convert points, and curve test distributions.
GPA Calculator
Calculate semester, cumulative, weighted, and target planned GPA.
Test Grade Calculator
Calculate a test score using correct or wrong answers.
Grade Percentage Calculator
Calculate grade percentage from points earned and points possible.
Gradebook Calculator
Calculate your course grade using points or weighted categories.
Final Grade Calculator
Find out exactly what score you need on your final exam.
Weighted Grade Calculator
Calculate your weighted grade from assignments with different weights.
Grade Answers Hub
Direct answers and conversions for 30+ common test score questions.