A weighted grade calculator computes your overall course grade by factoring in how much each assignment category is worth. Instead of treating every score equally, weighted grading gives more importance to categories like finals or projects that carry a higher percentage of your total grade. Enter your categories, weights, and scores below to instantly see your final weighted grade.
Grade Categories
Grade Breakdown
What Grade Do I Need?
Find out what score you need on a remaining assignment to hit your target grade.
Letter Grade Scale
| Letter | Percentage |
|---|---|
| A | 93 – 100% |
| A− | 90 – 92% |
| B+ | 87 – 89% |
| B | 83 – 86% |
| B− | 80 – 82% |
| C+ | 77 – 79% |
| C | 73 – 76% |
| C− | 70 – 72% |
| D+ | 67 – 69% |
| D | 63 – 66% |
| D− | 60 – 62% |
| F | Below 60% |
How to Use the Weighted Grade Calculator
Most courses split your final grade across multiple categories — homework, quizzes, midterms, projects, and finals — each worth a different percentage. Calculating your overall grade by hand means multiplying each category score by its weight, adding those products, and dividing by the total weight. This free weighted grade calculator does all of that instantly so you always know where you stand.
Step 1: Enter Your Categories
The calculator starts with three default categories: Homework (30%), Midterm (30%), and Final (40%). Edit the category names, weights, and scores to match your actual course syllabus. Click "Add Category" if your course has more than three graded components, or remove a row by clicking the trash icon.
Step 2: Review Your Weighted Grade
As you type, the calculator instantly shows your final weighted grade as a percentage and letter grade. The breakdown table below shows exactly how many points each category contributes to your total. If your weights don't add up to 100%, a warning appears — though the math still works correctly by dividing by the actual total weight.
Step 3: Find What Score You Need
Use the "What Grade Do I Need?" section to plan ahead. Enter your current weighted average (from the categories you've already completed), the weight of the upcoming assignment (like a final exam), and your target grade. The calculator tells you the exact minimum score you need on that remaining assignment to achieve your goal.
Understanding Weighted Averages
A weighted average differs from a simple average because not all items count equally. If your final exam is worth 40% and homework is worth 10%, getting a 95 on homework and a 70 on the final gives you a weighted average of (95 x 10 + 70 x 40) / 50 = 75%, not the simple average of 82.5%. Understanding this distinction helps you prioritize studying for high-weight categories where improvements have the biggest impact on your overall grade.
Tips for Using This Calculator
Check your course syllabus for exact category weights — professors sometimes adjust them mid-semester. You can also use this tool to run "what-if" scenarios by changing scores to see how different outcomes would affect your final grade. For multi-section courses, add each section as its own category with the appropriate weight.
FAQ
Is this weighted grade calculator free to use?
Yes, this weighted grade calculator is completely free with no signup, no ads, and no limits. All calculations run locally in your browser so your grades stay private on your device.
Is my grade data private and secure?
Absolutely. Everything runs entirely in your web browser using client-side JavaScript. No scores, grades, or personal data are ever sent to a server. Your information stays completely private.
How does weighted grading work?
Weighted grading assigns different importance to each category. For example, if finals are worth 40% and homework is worth 20%, your final exam score counts twice as much as homework. The weighted grade is calculated by multiplying each score by its weight, summing the results, and dividing by the total weight.
What if my weights don't add up to 100%?
The calculator still works correctly even if weights don't total 100%. It divides the weighted sum by the actual total of all weights entered. However, a warning is shown because most grading systems are designed to total exactly 100%.
How do I find out what grade I need on my final?
Use the 'What Grade Do I Need?' section below the main calculator. Enter your current weighted average, the weight of the remaining assignment, and your target grade. The tool instantly tells you the minimum score needed on that assignment.
Can I add more than three categories?
Yes, click the 'Add Category' button to add as many categories as you need. You can also remove categories by clicking the trash icon on any row. The calculator supports unlimited categories.
What letter grade scale does this calculator use?
The calculator uses the standard US letter grade scale: A (93-100%), A- (90-92%), B+ (87-89%), B (83-86%), B- (80-82%), C+ (77-79%), C (73-76%), C- (70-72%), D+ (67-69%), D (63-66%), D- (60-62%), and F (below 60%).