Test Grade Calculator
Enter total questions and wrong answers to get score, grade letter, and a full grading table.
Teacher Mode
Enable keyboard shortcuts for rapid grading (W, C, R).
Your Grade
100.0%
A+
Score Ratio
20 / 20
Wrong
-0
Bonus
+0
The Arithmetic
Test Grade Formula
The standard calculation for single test performance.
Core logic
[(Total - Subtract Wrong) ÷ Total] × 100
- 1Subtract Wrong
Subtract the total wrong from the total number of questions.
- 2Divide result
Divide that number by the total number of questions.
- 3Multiply 100
Multiply the result by 100 to get percentage.
Test Grading FAQ
What is a 10-question test scale?
On a 10-question test, every wrong answer drops your score by 10%.
What is a 4.0 GPA?
A 4.0 GPA is a perfect score, representing straight As across all courses.
Percentage Reference Table
| Letter Grade | Percentage | GPA Scale | Description |
|---|---|---|---|
| A+ | 97–100% | 4.0 | Exceptional |
| A | 93–96% | 4.0 | Excellent |
| A- | 90–92% | 3.7 | Very Good |
| B+ | 87–89% | 3.3 | Above Average |
| B | 83–86% | 3.0 | Good |
| B- | 80–82% | 2.7 | Above Average |
| C+ | 77–79% | 2.3 | Average |
| C | 73–76% | 2.0 | Satisfactory |
| C- | 70–72% | 1.7 | Below Average |
| D+ | 67–69% | 1.3 | Poor |
| D | 63–66% | 1.0 | Poor |
| D- | 60–62% | 0.7 | Barely Passing |
| F | 0–59% | 0.0 | Failing |
Teacher Secrets
Most standardized tests use "curving" to adjust individual scores based on overall class performance.