Weighted Grade Calculator
Calculate a final course grade based on weighted categories — such as homework, quizzes, tests, and projects. Enter each category's weight (as a percentage) and average score, then see the weighted final grade instantly. For individual assignment score lookups, see the Teacher's Grading Calculator. Need to figure out what you need on a final exam? Try the Final Grade Calculator.
Grade Categories
Grading Scale
How to Use the Weighted Grade Calculator
- The calculator comes pre-loaded with common categories (Homework, Quizzes, Midterm, Final Exam). Edit names and weights to match your syllabus.
- Enter the weight for each category as a percentage (e.g., 20 for 20%). Weights should add up to 100%, though the calculator will still work and warn you if they don't.
- Enter your score and total points for each category. Leave a category at 0/0 if you haven't received a grade for it yet.
- Click Add Category to include additional categories like "Labs," "Participation," or "Projects."
- Click Calculate Grade to see your weighted percentage, letter grade, and a per-category breakdown.
Weighted vs. Unweighted Grading
In an unweighted grading system, every point counts equally — scoring 10/10 on a homework assignment counts as much as 10/10 on a final exam. In a weighted system, certain categories are worth more of the final grade regardless of the raw point totals involved.
For example, if your final exam is worth 30% of your grade, a strong exam performance can meaningfully raise your overall score even if some homework grades were low. Conversely, poor performance on a heavily weighted category will have a larger impact than it might appear from raw points alone.
This calculator performs the weighted average: it multiplies your percentage in each category by its weight, sums the results, and divides by the total of all active weights to give you your final grade percentage.
Frequently Asked Questions
Do my category weights need to add up to 100%?
Ideally yes — most syllabi are designed so all weights sum to 100%. If yours don't (perhaps because some graded work is still upcoming), the calculator normalizes the total and alerts you so you can interpret results with that context in mind.
How is this different from a simple average?
A simple average treats each category equally. A weighted average gives certain categories more influence over the final grade. If a course weighs the final exam at 40%, that exam accounts for 40 percentage points of your final score, not just one data point among many.
Can I use this to calculate a grade I need on an upcoming assignment?
Yes — enter 0/0 for incomplete categories, then experiment by changing the score to see how different results on remaining work would affect your final grade.
What letter grade scale does the calculator use?
The standard US letter grade scale: A (90–100%), B (80–89%), C (70–79%), D (60–69%), F (below 60%). Plus and minus grades are shown where applicable.
Also useful: the GPA Calculator to convert letter grades to a GPA, and the Final Grade Calculator to find out what score you need on your final exam.
