Numbers
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Statistics Calculator
Paste a list of numbers to get the mean, median, mode, range, variance, and standard deviation instantly.
Statistics Calculator finds the mean, median, mode, range, variance, and standard deviation for any list of numbers. Paste values separated by commas, spaces, or new lines and every result updates instantly. Switch between sample and population standard deviation. Runs entirely in your browser, with no upload. Made by FreeToolHub.
Enter your numbers
Separate values with commas, spaces, or new lines.
Enter at least one number to see the statistics.
Standard deviation & variance
Results
How it works
Type or paste your numbers into the box, separated by commas, spaces, or line breaks. The calculator instantly computes the count, sum, mean, median, mode, range, variance, and standard deviation. Toggle between the sample (n − 1) and population (n) formulas for variance and standard deviation depending on whether your data is a sample or the entire population.
Frequently Asked Questions
What is the difference between mean, median, and mode?
The mean is the average of all values (sum divided by count). The median is the middle value when the numbers are sorted, which is less affected by outliers. The mode is the value that appears most often — a data set can have one mode, several modes, or none at all.
What is the difference between sample and population standard deviation?
Population standard deviation divides by the total count (n) and is used when your numbers represent an entire population. Sample standard deviation divides by n minus 1 and is used when your numbers are a sample drawn from a larger group — it corrects for the fact that a sample tends to underestimate variability.
How do I enter my numbers?
Type or paste them into the box separated by commas, spaces, or new lines — for example 4, 8, 15, 16, 23, 42 or one number per line. Negative numbers and decimals are supported.
What is variance?
Variance measures how spread out the numbers are from the mean. It is the average of the squared differences between each value and the mean. Standard deviation is simply the square root of the variance, expressed in the same unit as your original data.
Can a data set have more than one mode?
Yes. If two or more values appear the same number of times and more often than any other value, the data set is multimodal and all of those values are shown as the mode. If every value appears exactly once, there is no mode.
Is my data uploaded anywhere?
No. All calculations run locally in your browser using JavaScript. Your numbers are never sent to a server, stored, or tracked.