---
title: "Statistics Calculator"
description: "Paste a list of numbers and get count, sum, mean, median, mode, range, variance, standard deviation and quartiles. no signup required, no upload required."
url: https://findutils.com/calculate/statistics-calculator/
category: calculate
---

# Statistics Calculator

Paste a list of numbers and get count, sum, mean, median, mode, range, variance, standard deviation and quartiles. no signup required, no upload required.

**Use this tool:** [Statistics Calculator](https://findutils.com/calculate/statistics-calculator/)

## Programmatic access

- REST id `statistics-calculator`: POST https://api.findutils.com/api/tools/statistics-calculator/execute (reference: https://findutils.com/api/statistics-calculator/)
- MCP tool `statistics_calculator` on https://mcp.findutils.com (reference: https://findutils.com/mcp/statistics-calculator/)

## Why use this statistics calculator?

Most summary statistics questions start with a column of numbers already on the clipboard. Paste it here in whatever shape it arrived in — commas, spaces, semicolons or one per line — and every descriptive statistic appears at once, including the quartiles that spreadsheets make you write a formula for. Everything runs in your browser.

## Frequently Asked Questions

### What is the difference between sample and population standard deviation?

Sample standard deviation divides by n-1 and is the right choice when your numbers are a sample drawn from a larger group — it corrects for the fact that a sample underestimates the spread of the whole. Population divides by n and is correct only when you have measured every member of the group. Sample is the default here, and it is what most statistics courses and spreadsheet STDEV functions use.

### How do you calculate the quartiles?

By linear interpolation between the closest ranks, which is the same method spreadsheets use for PERCENTILE and QUARTILE. For nine values 1 to 9 that gives Q1 = 3 and Q3 = 7.

### What happens if no number repeats?

Every value is tied for the most frequent, so the mode is the whole list. That is the honest answer rather than showing nothing.

### Can it handle a column pasted from Excel or Google Sheets?

Yes. Newlines, tabs, spaces, commas and semicolons all separate values, and blank entries are ignored, so a pasted column works without cleaning it up first.

### How many numbers can I paste?

Up to 100,000 values. Beyond that the tool stops rather than freezing the page.

### Do I need an account?

No. This tool requires no signup, no usage limits, and no watermarks.

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