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Calculate mean, median, sum, min, max, and range of any number list.
📊 Enter any list of numbers. Supports commas, spaces, or line breaks as separators.
An average is a single number that represents the center of a set of numbers. But there are several kinds of averages, and they can tell very different stories about the same data. This calculator shows all the most useful ones at once so you can pick the right metric for your situation.
The mean(what most people call "the average") is the sum divided by the count. The median is the middle value when numbers are sorted. They differ dramatically when outliers are present.
Example: nine people earn $50,000 and one CEO earns $1,000,000. The mean income is $145,000, but the median is $50,000. The median reflects what the typical person actually earns; the mean is dragged up by the outlier. Always look at both.
Add up all the numbers and divide by how many there are. For 12, 15, 18, 22, 9: (12 + 15 + 18 + 22 + 9) ÷ 5 = 76 ÷ 5 = 15.2.
Sort the numbers, then take the middle one. If there's an even count, average the two middle values. For 9, 12, 15, 18, 22 (sorted): the median is 15. For 9, 12, 15, 18 (even count): the median is (12 + 15) ÷ 2 = 13.5.
Averages can mislead when you mix different groups. A famous example: a university's overall admission rate can favor men, even though every individual department favors women — because men applied more to easier-to-enter departments. Always check whether your data combines distinct populations before trusting an average.
The Average Calculator lets you figure out average calculatorinstantly, without reaching for a spreadsheet or doing the math by hand. Whether you're planning a budget, checking a loan, or working through homework, the tool applies the correct formula behind the scenes and shows the result the moment you enter your numbers.
Unlike a static chart or table, this calculator adapts to your exact inputs. You can adjust any value and see the outcome update in real time, which makes it easy to compare scenarios — for example, "what if the rate were 1% lower?" or "what if I paid an extra $50 a month?"
Common uses: people reach for this tool when they need to find a mean median mode calculator, average of list of numbers, sum min max range calculator, or arithmetic mean calculator.
Browser-based tools like this one have a few real advantages over installed software or manual methods:
The Average Calculator is based on the following formula:
mean = ( Σ xᵢ ) / n
Variables: mean = Arithmetic average xᵢ = Each data point n = Number of data points Σ xᵢ = Sum of all data points
Arithmetic mean. xᵢ are the data points, n is the count.
Worked example: Step 1: Test scores: 78, 85, 90, 92. Step 2: Σ xᵢ = 78 + 85 + 90 + 92 = 345. Step 3: mean = 345 / 4 = 86.25. Result: the average score is 86.25.
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