Math Calculator
Average Calculator
Calculate the mean, sum, and count for a list of numbers.
Average
13.2
- Sum
- 66
- Count
- 5
- Minimum
- 4
- Maximum
- 23
How it works
Enter a list of numbers separated by commas or spaces. The calculator adds them up, counts how many there are, and divides to get the average (technically the "arithmetic mean") — the same average you'd get from a spreadsheet's AVERAGE function.
This calculates a simple average, where every number counts equally. A weighted average (like a course grade where a final exam counts more than a quiz) needs each number's weight — see the Grade Calculator for that case.
Formula
Average = Sum of all numbers ÷ Count of numbers
Example
For the list 4, 8, 15, 16, 23: sum = 66, count = 5, average = 66 ÷ 5 = 13.2.
Frequently asked questions
What's the difference between average and median?
The average (mean) adds every number and divides by the count. The median is the middle value when the numbers are sorted — it's less affected by one very large or very small outlier. This calculator computes the average, not the median.
Can I enter negative numbers?
Yes — negative numbers and decimals both work normally.