Grade Calculator
The Grade Calculator converts earned points into a percentage or grade using the available inputs. It can help check a marked assignment, quiz, or exam when the maximum points and any grading conversion are known.
How to use this calculator
- Enter the points earned and total possible points; use the grading scale required by your class if a letter grade is also shown.
- Review the worked assignment score and compare its arithmetic with the inputs you plan to use.
- Change one input at a time when exploring a different scenario, and keep units and assumptions consistent.
Grade percentage
Grade percentage = points earned ÷ total possible points × 100.
- The percentage calculation assumes the possible-points total is positive and that all points have the same weight.
- The page's numerical output is calculated from the values entered; it does not independently verify whether those inputs fit the real-world situation.
Worked examples
Assignment score
A student earns 42 points out of 50 possible points.
42 ÷ 50 × 100 = 84%
The percentage score is 84%.
Understanding the result
A percentage does not always map to the same letter grade because schools may use different thresholds.
Weighted categories, dropped assignments, extra credit, and curving may change the final course grade.
Important notes
Confirm the grading rubric and whether the calculator should use raw points or weighted category grades.
Displayed values may be rounded for readability. Keep appropriate precision for intermediate calculations and check the unit labels before using the result.
Frequently asked questions
What does the Grade Calculator result mean?
A percentage does not always map to the same letter grade because schools may use different thresholds.
What should I check before using the grade calculator?
Confirm the grading rubric and whether the calculator should use raw points or weighted category grades.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.