Average Calculator

Introduction

Find the arithmetic mean of a list of numbers, plus sum, count, median, and range — useful for grades, expenses, and quick stats.

Formula

The arithmetic mean is the sum of all values divided by how many values there are. Median is the middle value after sorting.

• x_i — Each value in the list
• n — Number of values
• \bar{x} — Arithmetic mean

Step-by-step

1. Enter numbers separated by commas or spaces.
2. Mean = sum ÷ count.
3. Review median and range for a fuller picture.

Worked example

The numbers 10, 20, 30, 40 average to 25 with median 25.

Use cases

• Average test scores or grades
• Mean of monthly expenses
• Quick descriptive stats without a spreadsheet

Frequently asked questions