Grade Calculator
Calculate weighted course grades with customizable grading categories, category weights, and what-if grade scenarios.
Grade Calculator tool
Example
Input: Homework 20% weight at 85, Exams 40% at 78, Quizzes 15% at 92, Projects 25% at 88
Result: Overall Grade 84.00% (B)
(20 x 85 + 40 x 78 + 15 x 92 + 25 x 88) / 100 = 8,400 / 100 = 84.00%, which is a B.
Letter Grade Scale Used by This Calculator
| Percentage | Letter grade |
|---|---|
| 90% and above | A |
| 80% to 89.99% | B |
| 70% to 79.99% | C |
| 60% to 69.99% | D |
| Below 60% | F |
Schools vary. Some add plus and minus grades or use different cut-offs.
- Add assignment categories such as homework, quizzes, midterms, and finals with their weight percentages.
- Enter your current average score, as a percentage, for each category.
- Review the overall weighted grade, the letter grade, and each category contribution in the breakdown table.
- Turn on What-If Mode and add hypothetical assignments with a weight and score to see the projected impact.
- Check the total weight note - if your weights do not add up to 100%, the calculator normalizes them automatically.
How Weighted Grades Are Calculated
A weighted grade multiplies each category's score by its weight, adds the results and divides by the total weight. Say homework counts 20% and you have 85, and exams count 40% and you have 78. Add quizzes at 15% with 92 and projects at 25% with 88. Your overall grade is 84.00%, a B.
Weights matter more than most students expect. In the example, the 78 on exams pulls the grade down more than the 92 on quizzes pulls it up. That is because exams count for 40% and quizzes for only 15%. The breakdown table shows each category's weight, score and share of the final grade, so you can see where the points come from.
Enter each category from your syllabus with its weight and your current average as a percentage. Add or remove rows to match your course. If the weights do not add up to 100, the tool scales them so they do and shows the total, which is useful for grading midway through a term. The letter grade uses a standard scale. 90 and up is an A, 80 to 89.99 is a B, and so on down to an F below 60. Your school may use pluses, minuses or other cut-offs, so check your syllabus.
What-If Mode lets you add assignments you have not done yet, each with a weight and a score, and see the new overall grade. It is a quick way to see what a 95 on the next project would do. To find the exact score you need on a final exam, use the Final Grade Calculator. To turn letter grades into a GPA, try the GPA Calculator.
Frequently Asked Questions
Related Tools
GPA Calculator
Calculate your semester and cumulative GPA on a 4.0 or 5.0 scale with support for weighted and unweighted grades.
Education and AcademicFinal Grade Calculator
Determine what grade you need on the final exam to achieve your target course grade based on current standing.
Education and AcademicPercentage Calculator
Calculate percentages, percentage change, difference, increase, and decrease instantly.
Math and NumbersMean Median Mode Calculator
Find the mean, median, mode, and range of any data set with a frequency table and distribution display.
Statistics and Data