Statistics Calculator

Paste numbers and get mean, median, mode, standard deviation, and more instantly.

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Accepts integers and decimals. Example: 1.5, 2.3, 4, 7.1

Enter a list of numbers above, then click Calculate.

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What is a Statistics Calculator?

A statistics calculator takes a set of numerical data and computes the key descriptive statistics that summarise its central tendency, spread, and distribution. Instead of working through formulas by hand or setting up a spreadsheet, you can paste any list of numbers and get a full statistical summary in one click. This tool computes count, sum, mean, median, mode, range, variance (population and sample), standard deviation, quartiles (Q1, Q3), interquartile range, minimum, and maximum.

These measures are fundamental in data analysis, academic research, quality control, and everyday problem-solving. A histogram is also generated to visualise the frequency distribution of your data. All processing happens locally in your browser ā€” no data leaves your device.

How to Use

  1. Type or paste your numbers into the text area. Separate them with commas, spaces, or line breaks.
  2. Click āœØ Calculate to compute all statistics and render the histogram.
  3. Use āæ» Copy Results to copy the summary to your clipboard.

Frequently Asked Questions

Population standard deviation (Ļƒ) divides by N and is used when your data is the entire population. Sample standard deviation (s) divides by Nāˆ’1 (Bessel's correction) and is used when your data is a sample from a larger population ā€” this gives a less biased estimate of the true standard deviation. For large datasets the difference is negligible; for small ones it matters.

A dataset is multimodal if two or more values share the highest frequency. This calculator displays all modes. If every value appears exactly once there is no mode and the field will show "None".

No. This tool runs entirely in your browser. Your input is never sent to any server, never logged, and never stored. Closing the tab removes all data immediately.
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