Math & Calculators•Free & Browser-Based
Average Calculator
Calculate arithmetic mean, geometric mean, harmonic mean, and sum from any set of comma or space-separated numbers.
Mean (Average)21.67
Median22.00
Mode25
Sample Std Dev (s)5.98
Total Count: 9
Sum: 195
Min: 12
Max: 30
Variance: 35.75
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What is the Free Online Average Calculator?
The average (arithmetic mean) is the central tendency of a collection of numbers, calculated by summing all values and dividing by the total count of numbers.
100% Client-Side Privacy: Calculations and data processing occur entirely in your local browser memory. Zero files or personal inputs are uploaded to our servers.
How to Use Average Calculator Online: Step-by-Step Guide
- 1Paste or type numbers separated by commas, spaces, or newlines.
- 2View the Arithmetic Mean, Sum, Count, Smallest, and Largest values instantly.
Mathematical Formula & Underlying Logic
\bar{x} = \frac{\sum_{i=1}^n x_i}{n}
Real-World Calculation Example
Numbers: 10, 20, 30, 40. Sum = 100, Count = 4. Average = 100 / 4 = 25.
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