# The Best Free Online Quartile Calculators

In statistics, quartiles are a way to divide data into four equal parts. They can be used in a number of different ways, but most commonly they’re used to split out the top 25% (the first quartile) from the bottom 25% (the third quartile). When you see the median of a dataset mentioned, this refers to the second quartile, which splits out the middle 50% of the data from either end of it.

If you’re looking for a quartile calculator, it can be easy to get overwhelmed. Fortunately, there are plenty of online tools and calculators that will make it very easy to determine which quartiles you need. Here are some of our favorites.

## List of Free Quartile Calculators

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### What is a Quartile in Statistics ?

In statistics, a quartile is a measure of location which splits a distribution into four equal parts. The first quartile is also known as fiftieth percentile, and it can be thought of as describing a person with 50% of all possible cases below him or her. If a set contains an odd number of observations, then there are three quartiles: Q1, Q2 and Q3.