Average Calculator

Calculate the average of any set of numbers. Supports simple mean, weighted average (with custom weights), and geometric mean. Enter your numbers below for instant results.

Average Calculator

Average Formulas

Simple Mean = (x₁ + x₂ + ... + xₙ) / n Weighted Mean = Σ(value × weight) / Σ(weights) Geometric Mean = ⁿ√(x₁ × x₂ × ... × xₙ)

Types of Averages

TypeBest Used For
Arithmetic MeanGeneral data, equal-weight values
Weighted MeanGrades, polls, prices with different importance
MedianSkewed data (income, home prices)
Geometric MeanGrowth rates, investment returns

Frequently Asked Questions

When should I use weighted average instead of simple average?+
Use weighted average when different items contribute differently to the final result. For example, a final exam worth 40% of your grade should contribute more to your average than a quiz worth 5%. GPA calculations also use weighted averages based on course credit hours.
What is the difference between mean and median?+
The mean is the sum divided by the count. The median is the middle value when sorted. The mean is sensitive to outliers; one very large or small value can pull it significantly. Median is more representative for skewed data like incomes or house prices.

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