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Average Calculator

Paste a list of numbers to find the mean, median, mode, range and standard deviation.

Free foreverNo sign-upPrivate: runs in your browserUpdated November 2026
Mean (average)78.50
Median81.50
Mode85
Range35.00
Count10
Sum785.00
Min / Max59.00 / 94.00
Standard deviation10.65
Sample std. dev.11.23
● calculated in 0.00 msruns in your browserupdated 07:35:38
Visualise

Your numbers against the mean

The maths

Formula

This is the exact calculation the tool runs.

Mean = sum of numberscount
MedianMiddle value when sorted
ModeMost common value
Std. dev.√(Σ(x − mean)² ÷ n)
Practice

Worked examples

Click "Try it" to load an example into the tool.

Test scores

Numbers: “88 92 79 93 85”
87.40

Monthly sales

Numbers: “1200, 1350, 980, 1500, 1420, 1100”
1,258.33

With a repeat

Numbers: “3, 7, 7, 2, 9, 7, 4”
5.57
Step by step

How to use the Average Calculator

Paste your numbers

Commas, spaces or one per line all work.

Read the results

Mean, median, mode and more update instantly.

Check the chart

See which values are above or below the average.

Questions

Frequently asked questions

What is the difference between mean and median?

The mean adds everything and divides by the count. The median is the middle value, so it is not pulled by very high or low numbers.

When is there no mode?

When every number appears only once.

Which standard deviation should I use?

Use the sample one when your numbers are a sample of a bigger group, which is common in school statistics.