Data Variance Calculator

Paste or type a list of numbers, and Variance Calculator works out the variance, the standard deviation, the mean and the sum of squares. Results are given for a sample and for a whole population, so you can use the version that fits your data.

What you get
• Data set input: separate numbers with commas, spaces, semicolons or new lines, so you can paste a column from a spreadsheet
• Sample variance and standard deviation (divides by n - 1)
• Population variance and standard deviation (divides by n)
• Count, mean and sum of squares for the same data

Where it helps
• Statistics homework and exam practice
• Checking the spread of lab measurements or survey answers
• Comparing how much values vary between two groups
• Quick checks on a spreadsheet column

Made for daily use
• Light and dark theme
• 28 languages, with right-to-left layout where it belongs

A new app
Built on the Calculator.io calculator engine. A More calculators link opens the full Calculator.io app, with 170+ tools for math, money, health and dates.

The app is supported by banner ads.