Free weighted average calculator for grades, portfolios, and statistics. Calculate averages where each value has different importance.
Enter values separated by commas, spaces, or newlines
Enter corresponding weights (same count as values)
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Not all values are created equal. When some numbers matter more than others, you need a weighted average. Our calculator helps you compute weighted means for grades, portfolios, surveys, and any scenario where different items have different importance levels.
A weighted average gives each value a weight based on its importance. Unlike a simple average where all values count equally, weighted averages multiply each value by its weight before summing. Common uses include GPA calculation (credits as weights), portfolio returns (investment amounts as weights), and survey results (response counts as weights).
Weighted Average Formula
Calculate GPA with different course credits as weights.
Find portfolio return weighted by investment amount.
Weight responses by sample size or importance.
Combine KPIs with different importance levels.
Accurately reflects importance differences
Essential for GPA and grade calculations
Required for portfolio performance analysis
Proper weighting for survey data
More meaningful than simple average
Use weighted average when values have different importance levels—like course credits for GPA, investment sizes for returns, or sample sizes in research. Use simple average when all values are equally important.
No! Weights can be any positive numbers. The calculator normalizes them automatically. You can use percentages (adding to 100), decimal fractions (adding to 1), or any values like credit hours or dollar amounts.
Enter your grade points (4.0, 3.7, etc.) as values and credit hours as weights. The calculator gives you the GPA weighted by course credit.
Use a weighted average whenever some values matter more than others — course grades weighted by credit hours, a portfolio return weighted by allocation, or a rating weighted by the number of reviews. A regular (arithmetic) mean treats every value equally, which understates or overstates items that should count more.