# Grade Calculator

- **URL:** https://codeasystem.com/calculators/education/grade-calculator/
- **Category:** education
- **Description:** Combine assignment scores and their percentage weights into one overall course grade, with a warning when weights miss 100%.
- **Primary output:** Overall weighted grade: 85.75%

## Inputs
- Assignment 1 score (name: `score1`, type: number, example: 85)
- Assignment 1 weight (name: `weight1`, type: number, example: 25)
- Assignment 2 score (name: `score2`, type: number, example: 92)
- Assignment 2 weight (name: `weight2`, type: number, example: 25)
- Assignment 3 score (name: `score3`, type: number, example: 78)
- Assignment 3 weight (name: `weight3`, type: number, example: 25)
- Assignment 4 score (name: `score4`, type: number, example: 88)
- Assignment 4 weight (name: `weight4`, type: number, example: 25)

## Outputs
- Overall weighted grade: 85.75%
- Assignment 1 (25% weight): 85%
- Assignment 2 (25% weight): 92%
- Assignment 3 (25% weight): 78%
- Assignment 4 (25% weight): 88%
- Total weight used: 100%

## Formula / methodology
```
Overall = Σ(scoreᵢ × weightᵢ) ÷ Σ(weightᵢ)
```

Each assignment contributes its score multiplied by its share of the total weight. When your weights sum to exactly 100%, this is the standard weighted average teachers publish in syllabi; when they do not, the result is still computed but flagged so you can fix the syllabus math.

## Assumptions & limitations
- Scores are percentages from 0 to 100.
- Weights are percentages of the course grade.
- Assignments not yet graded should be left at 0 or excluded by setting their weight to 0.

## How to use
1. **Enter each score**; Use the percentage you received on every graded item.
2. **Match the syllabus weights**; Copy the weights exactly as your instructor published them.
3. **Check the warning**; If the weights miss 100%, the interpretation tells you what they actually sum to.

## Example
Scoring 85%, 92%, 78% and 88% on four equally weighted assignments lands you at an 85.75% overall.

Result for these inputs:

```
Overall weighted grade: 85.75%
```

## About this calculator
### Why weighting changes everything

Averaging raw scores treats a 5-point quiz like the final exam. Weighting fixes that: a 95% on something worth 10% of the grade moves your average far less than an 85% on a 40% final. Always reproduce the syllabus weights, not your gut.

### The missing-weight trap

Many students forget that “remaining work” still carries weight. If two exams worth 30% each are done, your ungraded final silently holds the other 40%; plan target scores accordingly instead of assuming you are safe.

### Grouping categories

Syllabi often weight categories (homework 20%, labs 30%, exams 50%). Average each category first, then feed those category averages in as your four scores with the category weights.

## FAQs
### What if my weights do not add to 100%?

The calculator still computes a weighted average over the weights you entered but warns you; most instructors expect exactly 100%.

### Can I handle dropped lowest scores?

Yes; enter only the surviving assignments and redistribute their weights proportionally across 100%.

### Does it work with points instead of percent weights?

Convert points to percentages first (earned ÷ possible × 100), then weight each item by its share of total course points.

### What score do I need on remaining work?

Pair this with the final-grade calculator: it converts your current standing and the remaining weight into the exact score required.

## Related calculators
- [GPA Calculator](https://codeasystem.com/calculators/education/gpa-calculator/)
- [Final Grade Calculator](https://codeasystem.com/calculators/education/final-grade-calculator/)
- [Reading Time Calculator](https://codeasystem.com/calculators/education/reading-time-calculator/)

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Last updated: 2026-08-23 · Version: 1.0.0 · [HTML version](https://codeasystem.com/calculators/education/grade-calculator/)