Grade Calculator

Use this weighted grade calculator to easily calculate the weighted average grade for a class or course. Enter letter grades (A, B-, C+, etc.) or percentage scores (75, 88, 92, etc.) achieved on all relevant exams, homework assignments, projects, verbal exams, etc. as well as their weights as percentages. Optionally, enter a final grade goal to estimate how much you need to score on your final exam in order to meet your goal.

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    Quick navigation:
  1. How to calculate your grade
  2. What grade do I need on my final?
  3. How to convert a grade to percentage?

    How to calculate your grade

With the help of this grade calculator you can calculate your current weighted grade or unweighted grade in terms of percentage, letter grade, or GPA. The tool will also output the weight of all remaining exams, and assignments and has the option of calculating the minimum score you need to obtain on a final exam in order to achieve a target overall grade for a class or course.

To use the calculator, enter the number of grades you currently have, then each grade as a percent or letter grade, and finally the weight each grade adds towards the overall. If no weights are entered, the weights are assumed equal and the calculator will output the unweighted average grade. Otherwise a weighted average grade will be produced in terms of percentage, GPA, and a letter grade.

    What grade do I need on my final?

If you haven't yet got a score on the final exam for a given class, you can use this tool as a final grade calculator. In order to achieve a given grade goal for the entire class, course, or semester, a given minimum grade is required on the final exam, depending on both the weighted average grade to that date, and the weight of the final on the overall grade. This minimum required score can be calculated using the following formula:

Required final score = (Grade Goal - Current Grade x (100% - Weight of Final(%))) / Weight of Final(%)

The current grade is calculated based on the weighted average of all marks to date. The weight of the final test is calculated as 100% minus the combined weight of all grades to date. Therefore, if the combined weight of the scores you enter is 65% then the final exam will have a weight of 100% - 65% = 35%.

    How to convert a grade to percentage?

Our grade calculator uses the following table to convert letter grades to percentages. Note that since this is not a universally applicable table, ideally one would want to know the exact percentage scores and use these as input for the calculator, otherwise the results may be slightly off.

Letter grades to percentages and GPA
Letter GradePercentageGPA
A+ 97-100% 4.3
A 93-96% 4.0
A- 90-92% 3.7
B+ 87-89% 3.3
B 83-86% 3.0
B- 80-82% 2.7
C+ 77-79% 2.3
C 73-76% 2.0
C- 70-72% 1.7
D+ 67-69% 1.3
D 63-66% 1.0
D- 60-62% 0.7
F 0-59% 0.0

Again, it is our recommendation that you check with your local school or college and enter percentage grades instead of letter grades for the most accurate calculation. Note that while U.S. colleges and schools are likely to use the above grading, educational institutions in other countries may use a vastly different GPA scale.

Cite this calculator & page

If you'd like to cite this online calculator resource and information as provided on the page, you can use the following citation:
Georgiev G.Z., "Grade Calculator", [online] Available at: URL [Accessed Date: 01 Apr, 2023].