Statistics & Probability

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Midrange Calculator.

Calculate the midpoint of the minimum and maximum values.

On-device calculationNo signup
01

Set your values

Results update as you type.

minimum: 4

minimum

4.000000
maximum: 20

maximum

20.000000
midrange: 12

midrange

12.000000

Results update automatically as you type.

Use Cases

Quick data set overview

Get a quick sense of the center of your data when you only know the extremes. Useful for a fast estimate without calculating the mean.

Example: If your data ranges from 10 to 20, the midrange is 15.

Checking symmetry

Compare the midrange to the mean to see if your data is symmetric or skewed. If they are close, the data is likely symmetric.

Example: For data 1, 2, 3, 4, 100, the midrange is 50.5, but the mean is 22, indicating skewness.

Frequently Asked Questions

What is the midrange and how is it calculated?
The midrange is the average of the smallest and largest values in a data set. To calculate it, add the minimum and maximum values, then divide by 2. For example, if your data set is 2, 5, 9, the midrange is (2+9)/2 = 5.5.
What is the difference between midrange and mean?
The midrange uses only the minimum and maximum values, while the mean uses all data points. The midrange is sensitive to outliers, whereas the mean is affected by every value but less so by a single extreme value. They can differ significantly.
Can I use the midrange for any type of data?
Yes, the midrange can be used for any numerical data set, but it is most useful when the data is roughly symmetric and has no extreme outliers. For skewed data, the median or mean might be more representative.

Tips & Common Mistakes

Tips

  • Ensure you enter all data values separated by commas or spaces for accurate calculation.
  • The midrange is sensitive to outliers, so interpret it with caution if your data has extreme values.
  • Use the midrange as a quick check, but for a more robust measure of center, consider the median or mean.
  • If you have a large data set, double-check that you've included the true minimum and maximum.

Common Mistakes to Avoid

  • Forgetting to include all data values, especially the smallest or largest, which changes the midrange.
  • Confusing midrange with median or mean; they are different measures of central tendency.
  • Using the midrange for skewed data without noting that it may not represent the typical value.

Last updated: August 13, 2026