Średnia ważona

What Is a Weighted Average Calculator?

A weighted average calculator computes an average where each value has a different importance (weight). Unlike a simple average, each number is multiplied by its weight before summing, and the total is divided by the sum of all weights.

Weighted averages appear in GPA calculations, financial portfolio returns, survey scoring, and any context where different items contribute unequally to the final result.

How to Calculate Weighted Average

1. Enter values and their corresponding weights
2. Ensure weights sum to 100% or normalize automatically
3. The calculator computes the weighted average
4. View results and weight distribution

Features

• Calculate weighted average for any dataset
• Auto-normalize weights if they don't sum to 100%
• Show individual contributions to final average
• Support unlimited value-weight pairs

Common Use Cases

• Computing a course grade from assignments with different point weights
• Calculating portfolio return from assets with different allocation percentages
• Aggregating survey responses where answer categories have different importance scores

Why Use ToolPop Weighted Average Calculator

• Accepts any number of value-weight pairs without row limits
• Works whether weights are percentages, fractions, or raw counts
• Shows the weighted contribution of each item for full audit transparency

ToolPop vs Excel SUMPRODUCT

Excel's SUMPRODUCT handles weighted averages but requires formula setup and careful range matching. ToolPop accepts a simple table of values and weights directly, shows each item's contribution, and handles mismatched or non-normalized weights automatically.

Tips

• Weighted average shows true average when items have different importance
• Used in GPA, student grades, portfolio returns, and quality metrics
• Weights must total 100% for accurate results

Frequently Asked Questions

When should I use weighted average vs simple average?

Use weighted average when items have different importance levels. Simple average treats all items equally.

What happens if my weights don't sum to 100%?

The calculator can auto-normalize weights if enabled, or you can adjust them manually to ensure accuracy.

Will my calculation data be stored?

No, all weighted average calculations happen in your browser. Your data is never stored or transmitted.

Learn More