Average Calculator
Calculate arithmetic mean, geometric mean and weighted average. Handles negatives and decimals. Free.
How to use the Average Calculator
Three types of average
Arithmetic mean — add all values and divide by count. This is what most people mean by "average". Geometric mean — multiply all values then take the nth root. Used for percentage growth rates and investment returns. Weighted average — values that matter more get higher weights, like grade calculations with different credit weightings.
When to use each
Use arithmetic mean for test scores, temperatures, prices. Use geometric mean when averaging growth rates (e.g. investment returns of 10%, 20%, −5% over three years). Use weighted average for grades, ratings or any calculation where some values count for more than others.
Frequently asked questions
Is the Average Calculator free to use?
Yes, the Average Calculator is completely free. There is no sign-up, no account required, and no limit on how often you can use it.
How accurate is the Average Calculator?
The Average Calculator uses standard mathematical formulas and produces results accurate to standard precision. For critical applications, always verify with an authoritative source.
What devices does the Average Calculator work on?
The Average Calculator works on any device with a modern web browser — desktop, laptop, tablet, or phone. It is mobile-friendly and works offline once the page has loaded.