Education
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Test Grade Calculator.
Calculate a test percentage and letter grade, or find the score needed to reach a weighted course target.
Set your values
Results update as you type.
How to Use
Points mode uses points earned ÷ points possible × 100.
Weighted mode solves the required test percentage from your current grade, weights, and target.
FAQs
How do I convert points to a percentage?
Divide points earned by points possible and multiply by 100. The calculator also shows the corresponding letter grade.
What does an answer above 100% mean?
It means the requested course target is not achievable from the remaining test under the entered weights.
How to Use the Test Grade Calculator
Convert points into a percentage and letter grade, or calculate the test score required for a weighted course target.
- Choose Points and percentage for a completed test, or Weighted target for a course scenario.
- Enter the points earned and possible, or enter the current grade, weights, and target.
- Review the automatically calculated percentage, letter, or required test grade.
Test Grade Formulas
Percentage
The point values must use the same scale and points earned cannot exceed points possible.
Example:
Input: 42 earned out of 50
Calculation: 42 ÷ 50 × 100
Result: 84%
Weighted target
Weights are percentages that must add to 100%. A required score above 100% means the target is not achievable from this test alone.
Real-World Use Cases
Test Review
Translate a raw point score into the percentage and letter-grade scale used by your class.
Course Planning
Check whether a target course grade is achievable on an upcoming assessment.
Tips & Common Mistakes
Tips
- Confirm whether your instructor uses weighted categories or raw points.
- Do not mix points from different assignments unless they share one grading scale.
Common Mistakes to Avoid
- Entering the test weight as a decimal instead of a percentage.
- Assuming a required score above 100% is a calculation error; it indicates the target is unreachable under the inputs.
Related Calculators
Cite this calculator
Canonical URL: https://mathify.one/en/education/test-grade
Cite as: Mathify. (2026). Test Grade Calculator. https://mathify.one/en/education/test-grade
Use Cases
Determine your test performance
Quickly convert points earned into a percentage and letter grade to see how well you did on a test.
Example: If you earned 18 out of 20 points, your percentage is 90% (A-).
Plan for a target course grade
Calculate the minimum score needed on an upcoming test to achieve a desired final grade in the course.
Example: With a current grade of 85%, a test weight of 30%, and a target of 90%, you need 101.67% on the test.
Frequently Asked Questions
- How do I calculate my test percentage and letter grade?
- Enter the points you earned and the total points possible. The calculator divides earned by possible and converts the result to a percentage and a letter grade based on the standard grading scale.
- How can I find the score I need on a test to reach a target course grade?
- Provide your current grade, the weight of your current work, the test weight, and your target course grade. The calculator computes the required test score as a percentage to achieve that target.
- What if my current work weight and test weight don't add up to 100%?
- The calculator uses the weights you enter to compute the required test score. Ensure the sum of current work weight and test weight equals 100% for an accurate result.
Tips & Common Mistakes
Tips
- Double-check that the points possible is greater than zero to avoid division errors.
- When calculating the required test score, ensure the sum of current work weight and test weight equals 100%.
- Use the letter grade as a quick reference, but always check your school's specific grading scale.
- If your target course grade is higher than 100%, the calculator will show that it's impossible to reach with the given weights.
Common Mistakes to Avoid
- Entering points earned as a percentage instead of actual points (e.g., 90 instead of 18 out of 20).
- Forgetting to convert weights to percentages (e.g., using 30 instead of 0.30).
- Assuming the letter grade scale is universal; it may vary by institution.
Last updated: August 13, 2026