Mode of a Data Set Calculator

About this calculator

The mode of a data set is simply whichever value (or values) appear most often. Unlike the mean or median, it is the only measure of central tendency that works directly on categorical data — you can find the mode of a list of favorite colors or shoe sizes, but you cannot average them. A data set can be unimodal (one clear mode), bimodal or multimodal (two or more values tied for most frequent), or have no mode at all if every value appears exactly once.

Retailers use the mode to find the single best-selling size or price point to stock more of, survey researchers use it to report the most common response to a categorical question, and quality-control teams use it to spot the most frequently occurring defect type in a production run.

Enter a list of numbers and this calculator finds the mode, tells you how many times it occurs, and flags whether your data set is multimodal.