Test Grade Calculator
Calculate your test score and letter grade with customizable grading scale
Free, accurate, instant results - Perfect for students and teachers
Calculate Your Grade
Result
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Grade Scale
| A+ | A | A- | B+ | B | B- | C+ | C | C- | D+ | D | D- | F |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 97%-100% | 93%-96.99% | 90%-92.99% | 87%-89.99% | 83%-86.99% | 80%-82.99% | 77%-79.99% | 73%-76.99% | 70%-72.99% | 67%-69.99% | 63%-66.99% | 60%-62.99% | 0%-59.99% |
How to calculate test score
The basic formula for calculating a test score is straightforward:
Test Score (%) = (Correct Answers ÷ Total Questions) × 100
Step-by-step process:
- Count correct answers: Determine how many questions you answered correctly.
- Count total questions: Note the total number of questions on the test.
- Divide: Divide your correct answers by the total questions.
- Convert to percentage: Multiply the result by 100 to get your percentage score.
- Find letter grade: Match your percentage to the appropriate letter grade on your school's grading scale.
Example:
If you scored 45 correct answers out of 50 questions: (45 ÷ 50) × 100 = 90%, which is typically an A- grade.
Test grade calculator – how to use it?
Our calculator makes it easy to determine your test grade instantly. Here's how to use it:
Calculate Your Grade:
- Enter the total number of questions on your test.
- Select whether you want to input correct answers or wrong answers.
- Enter the number of correct or wrong answers you received.
- The calculator automatically displays your percentage and letter grade.
- Use the Grade Table to see all possible grades and their corresponding score ranges.
Query Your Score:
- Enter a specific number of correct answers you want to check.
- The calculator instantly highlights the corresponding row in the Grade Table.
- See your exact percentage and letter grade for that score in real-time.
Test grade calculator – advanced usage
Custom Grading Scale:
Different schools and teachers may use different grading scales. This calculator allows you to customize the grading scale to match your specific institution:
- Click the "Edit Grading Scale" button to modify grade thresholds.
- Enter the minimum percentage required for each letter grade.
- Your changes apply immediately to all calculations.
- The Grade Table updates automatically to reflect your custom scale.
Working with Decimal Values:
The calculator supports partial credit and decimal values for precise calculations:
- Enter decimal numbers like 37.5 for half-points.
- Useful when tests have different point values or partial credit is awarded.
- Percentage calculations remain accurate to multiple decimal places.
Handling Large Datasets:
For tests with very large question counts (over 10,000), the calculator automatically optimizes:
- Uses intelligent sampling to display a focused Grade Table.
- Maintains accuracy while improving performance.
- Query Your Score feature works seamlessly regardless of test size.
FAQs
What is a passing grade?
In most US schools, a D- or D grade (60% and above) is considered the minimum passing grade. However, this varies by institution—some schools require 65% or 70% to pass. Always check your specific school's grading policy.
Does this calculator support different grading systems?
Yes! The calculator comes with the standard US grading scale by default, but you can customize it for any system. Click "Edit Grading Scale" to set your school or teacher's specific grade thresholds.
Can I use decimal numbers for partial credit?
Absolutely! The calculator fully supports decimal values. Enter 37.5 for half-points or any other fractional score. This is especially useful for weighted scoring or tests with partial credit policies.
What if I have a very large number of test questions?
The calculator can handle tests with thousands of questions efficiently. For very large datasets (over 10,000 questions), it uses intelligent sampling to keep the Grade Table manageable while maintaining calculation accuracy.
How accurate is the percentage calculation?
The calculator provides percentage calculations accurate to multiple decimal places. This ensures precise grade determination even in edge cases between letter grades.
Can I quickly check multiple scores?
Yes! Use the "Query Your Score" tool to instantly check what grade you'd get for any number of correct answers. The corresponding row in the Grade Table highlights automatically, making it easy to compare different scenarios.