IQR (Interquartile) Calculator

Use our simple online Interquartile calculator to find the IQR value of any series of numbers.

How to use the IQR (Interquartile) Calculator

Step 1

Enter your set of numbers in the input field. Numbers must be separated by commas.

Step 2

Press Enter on the keyboard or on the arrow to the right of the input field.

Step 3

In the pop-up window, select “Find the Interquartile”. You can also use the search.

What is IQR (Interquartile) in Math

The interquartile range (IQR) is the difference between the third and first quartile. Interquartile is a characteristic of the distribution of the value and is a robust analogue of variance. Together, the median and interquartile range can be used instead of mathematical expectation and variance in the case of large-emission distributions, or if the latter cannot be calculated.