Mean Median Mode Calculator

How to use

1. 1Paste your numbers into the input area. Commas, spaces, tabs, semicolons, and newlines all work as separators.
2. 2Pick one of the sample data presets to see how the calculator works, or clear the input and start with your own values.
3. 3Read the four headline statistics (mean, median, mode, range) at the top, plus the spread panel for variance and standard deviation and the five number summary for quartile breakdowns.
4. 4Click any Copy button to copy a single value, or use Copy full report to grab every statistic as a plain text block.
5. 5Skim the sorted list and frequency table to spot duplicates, gaps, and outliers in your data set.

About this tool

Mean Median Mode Calculator turns a list of numbers into a full set of descriptive statistics in your browser. Paste values separated by commas, spaces, tabs, semicolons, or newlines and the tool reports the mean (arithmetic average), the median (middle value of the sorted list, or the average of the two middles when the count is even), the mode (most frequent value, with multimodal data sets handled correctly and reported as no mode when every value occurs once), the range (max minus min), and the full five number summary (minimum, Q1, median, Q3, maximum). It also computes both sample and population standard deviation, both sample and population variance, the interquartile range, the count, and the sum, so the same input answers homework questions, spreadsheet checks, and quick data analysis. Quartiles use linear interpolation between order statistics, the same method NumPy uses by default and the convention most statistics textbooks teach. The result panel includes a sorted ascending and sorted descending view, a frequency table with percentages and a visual bar for data sets with up to 60 unique values, and a full report you can copy in one click. Useful for students learning measures of central tendency and dispersion, teachers preparing answer keys, analysts double-checking a quick column of numbers, scientists summarizing experimental readings, and anyone who needs an average without opening a spreadsheet. Everything is computed locally on your device, so the numbers you paste here never leave your browser.

Free to use. Works in your browser. No signup, no login.