Weighted Average Calculator
Input Data
Weighted Average Formula
Weighted Average = (Σ(value × weight)) / Σ(weight)
Where:
- Σ(value × weight) is the sum of each value multiplied by its corresponding weight
- Σ(weight) is the sum of all weights
Example: If you have three items with values (80, 90, 70) and weights (2, 3, 1), the calculation would be:
(80×2 + 90×3 + 70×1) / (2 + 3 + 1) = (160 + 270 + 70) / 6 = 500 / 6 ≈ 83.33
📊 What is Weighted Average Calculator?
Weighted Average Calculator is a smart and interactive online tool that calculates the weighted average of any data set by taking into account its weights and values. When different values have different weights — like GPA, financial investments, or weighted test scores — this tool provides accurate and accurate results.
🧠 How does Weighted Average work?
Weighted Average is calculated using this formula:
Weighted Average = Add all values and their weights, then divide the sum by the total of the weights.
📐 In mathematical form:
Weighted Average = Σ(Value × Weight) / ΣWeight
Where:
Value = data value (e.g. marks, score, price)
Weight = importance or weight of that value
Example:
If you have three values – 80, 90 and 70 and their weights are – 2, 3 and 1
Then Weighted Average will be:
(80×2 + 90×3 + 70×1) / (2 + 3 + 1) = 500 / 6 = 83.33
📌 Who is this Tool For?
| 👤 User | 🎯 Use Case |
|---|---|
| 🎓 Students | Calculate weighted grades, GPA, or academic scores |
| 🧑🏫 Teachers & Educators | Assign weighted marks to tests or assignments |
| 💼 Investors | Analyze weighted return of investment portfolios |
| 📊 Data Analysts | Understand data trends with weighted metrics |
| 🔬 Researchers | Evaluate weighted scores in surveys and experiments |
🔧 Key features of this tool
✅ Dynamic Input Rows: You can add as many values and weights as you want
✅ Normalization Options: You can normalize weights to 1 or 100%
✅ Decimal Precision Setting: You can control the number of decimal points in the result
✅ CSV/JSON Import-Export: Facility to save or load data
✅ Beautiful Graphs with Chart.js:
Weight Distribution Pie Chart
Value vs Weight Bar Chart
✅ Interpretation Section: Results are explained in simple language
✅ Fully Responsive Design: 100% fit on mobile, tablet and desktop