In statistics, **quintiles** are numbers that split a dataset into five groups of equal frequency.

The first quintile is the point where 20% of all data values lie below it. The second quintile is the point where 40% of all data values lie below it, and so forth.

We can use the following function to calculate the quintiles for a dataset in Excel:

=PERCENTILE(CELL RANGE, QUINTILE)

The following example shows how to use this function in practice.

**Example: Calculate Quintiles in Excel**

Suppose we have the following dataset with 20 values:

The following image shows how to calculate the quintiles for the dataset:

The way to interpret the quintiles is as follows:

- 20% of all data values lie below
**6.8**. - 40% of all data values lie below
**14**. - 60% of all data values lie below
**20.8**. - 80% of all data values lie below
**26.2**.

We can also use the following formula to calculate each quintile at the same time:

=PERCENTILE(CELL RANGE, {0.2, 0.4, 0.6, 0.8})

The following image shows how to do so:

Notice that the quintiles calculated here match the quintiles we calculated earlier.

**Additional Resources**

How to Calculate Deciles in Excel

How to Calculate a Five Number Summary in Excel

How to Calculate the Interquartile Range (IQR) in Excel