Real syllabus math
Uses Σ(score × weight) ÷ Σ(weight), the same weighted average teachers use in most gradebooks.
Tools / Class Grade Calculator
Class Grade Calculator
Enter each assignment score and syllabus weight. Get your weighted course grade, letter, and 4.0 GPA points instantly.
Grade = Σ (score × weight) ÷ Σ weight
Enter values to see the result
- 1
List graded work
Add each homework, quiz, midterm, or project with the score you earned (0–100).
- 2
Enter syllabus weights
Use the weight from your syllabus (percent or points). Weights do not need to total 100 yet if work is still outstanding.
- 3
Read your standing
See the weighted percentage, letter grade, and 4.0-scale GPA points for that course.
Why use this class grade calculator
Match how your syllabus actually weights homework, quizzes, and exams.
Partial courses welcome
If only some categories are graded, enter what you have. Weights are normalized over the items you include.
Letter and GPA together
Converts the percentage to a common US letter scale and matching 4.0 GPA points.
When to calculate a class grade
Mid-semester check-ins
See where you stand before the final when categories carry different weights.
Syllabus planning
Model how a stronger exam score would move your overall percentage.
Parents and tutors
Translate a list of scores into one clear course grade without a spreadsheet.
Weighted class grade formula
Grade = Σ (score × weight) ÷ Σ weight
Score is a percentage (0–100). Weight is the syllabus share for that item. If weights already sum to 100, the division by Σ weight is the familiar “percent of the course” math.
Tips for accurate results
- Copy weights from the syllabus, not from memory.
- Use the same scale for every score (all percentages).
- Leave blank rows empty rather than entering zeros for unfinished work.
- If your school uses a custom letter scale, trust the percentage first.
Related calculators
Frequently asked questions
How does the class grade calculator work?
It computes a weighted average: multiply each score by its weight, add those products, then divide by the sum of the weights.
Example: homework 85 at 20% and midterm 92 at 30% → (85×20 + 92×30) ÷ (20+30) = 89.2%.
Do my weights need to add to 100%?
No. Enter the weights from your syllabus as written. The calculator divides by the total weight of the rows you filled in, so a partial term still produces a current standing.
What letter grade scale do you use?
A common US scale: A+/A/A− through D−/F, with 4.0 GPA points (A = 4.0, A− = 3.7, B+ = 3.3, and so on).
Your school may use different cutoffs. Treat the letter as a guide, not an official transcript grade.
Can I enter points earned out of a total?
Convert to a percentage first (earned ÷ possible × 100), then enter that percentage as the score. Weight stays whatever the syllabus assigns that item.
Is this the same as a GPA calculator?
This page is for one class. For a semester GPA across courses, weight each course grade by credit hours in the weighted average calculator.
Are my grades stored?
No. Everything runs locally in your browser.
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