Average Calculator — Mean, Median, Mode & Range
Use this free average calculator to find the mean, median, mode and range of any set of numbers. Enter your values separated by commas or spaces for an instant full statistical summary.
Average Calculator
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How Is an Average Calculated?
The average — also called the mean — is calculated by adding all values together and dividing by the count of values.
Formula: Average = Sum of all values ÷ Count of values
For example the average of 10, 20 and 30 is (10 + 20 + 30) ÷ 3 = 20
Mean vs Median vs Mode
Mean — the sum of all values divided by the count. The most common type of average. Best for symmetrical datasets without extreme outliers.
Median — the middle value when all numbers are arranged in order. Better than mean when your data has extreme outliers — for example median household income is more useful than mean because a few billionaires skew the mean dramatically.
Mode — the most frequently occurring value. Useful for categorical data or when identifying the most common result.
Range — the difference between the highest and lowest value. Measures how spread out your data is.
FAQs
What is the difference between mean and average?
They mean the same thing. Average and mean both refer to the sum of values divided by the count of values.
When should I use median instead of mean?
Use median when your data has extreme outliers that would skew the mean. Median income and median house prices are good examples where median is more representative than mean.
What does it mean if there is no mode?
If every number appears the same number of times there is no mode. This is common in small datasets.
Can I calculate the average of negative numbers?
Yes — the calculator handles negative numbers, decimals and any combination of values.
Is this calculator free?
Yes completely free with no sign-up needed.