Average Calculator
Find the arithmetic mean of any set of numbers, along with the sum and count of values.
Average Calculator
Find the arithmetic mean of any set of numbers, along with the sum and count of values.
How to use the Average Calculator
- Enter numbers separated by commas, spaces, semicolons, or new lines.
- Click Calculate.
Formula
Mean = Sum of all values ÷ Count of values
Example
Average of 12, 18, 24, 30: (12+18+24+30) ÷ 4 = 84 ÷ 4 = 21
Step-by-step calculation
- Sum all values: 12 + 18 + 24 + 30 = 84.
- Count the values: 4.
- Divide: 84 ÷ 4 = 21.
Real-world uses
- Calculating grade point averages.
- Tracking daily averages for fitness or finance.
- Analyzing test scores or survey results.
Common mistakes
- Forgetting to include all numbers in the set.
- Confusing average with median.
- Using average when the data has extreme outliers (consider median instead).
Frequently asked questions
What is the difference between mean and median?
The mean is the arithmetic average. The median is the middle value when sorted. Outliers affect the mean more.
How many numbers can I enter?
As many as you need, separated by commas, spaces, or line breaks.
Can I enter decimals?
Yes. The calculator handles integers, decimals, and negative numbers.