➗ Mean, Median & Mode

Average Calculator

Enter numbers separated by commas, spaces or new lines — get mean, median, mode, range and standard deviation instantly.

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Statistics Quick Reference

Stat Formula
MeanSum of all values ÷ count
MedianMiddle value when sorted; avg of two middles if even count
ModeMost frequently occurring value (can be multiple)
RangeMax value − Min value
Std Dev√( Σ(x − mean)² ÷ n ) — spread around the mean

When your data is skewed (e.g. salaries), the median gives a more representative "typical" value than the mean.

Average Calculator FAQ

Add all numbers together and divide by the count. For example, the average of 10, 20, 30 is (10+20+30)÷3 = 20. This is also called the arithmetic mean.

Mean is the arithmetic average. Median is the middle value when numbers are sorted. Mode is the most frequently occurring value. For skewed data, the median is often more representative than the mean.

Multiply each value by its weight, add the results, then divide by the total weight. For example, a test worth 40% scored 85% and an assignment worth 60% scored 70%: (85×0.4 + 70×0.6) = 34+42 = 76%.

Standard deviation measures how spread out numbers are from the average. A low standard deviation means values are close to the mean; a high standard deviation means they are spread out widely.

Sort the numbers from smallest to largest. If there is an odd count, the median is the middle number. If there is an even count, the median is the average of the two middle numbers.

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