Average Calculator

About This Tool

Enter any list of numbers separated by commas, spaces, semicolons, or newlines. The calculator instantly computes ten statistical measures including mean, median, mode, standard deviation, and variance.

How to Use

1. Enter numbers in the input field, separated by commas, spaces, semicolons, or newlines.
2. Results appear instantly as you type — no button to click.
3. All ten statistical measures update in real time.

Definitions

• Mean — Sum divided by count.
• Median — Middle value when sorted.
• Mode — Most frequently occurring value(s).
• Range — Difference between max and min.
• Std Deviation — Measure of spread around the mean (population σ).

Use Cases

Students use this tool to check statistics homework instantly. Data analysts quickly summarize a dataset before importing it into a spreadsheet. Teachers display live statistical results in the classroom. Scientists compute descriptive statistics for experimental data.

FAQ

• What is the difference between mean and median? — The mean is the arithmetic average (sum ÷ count). The median is the middle value when the numbers are sorted. The median is less affected by outliers.
• What if there are multiple modes? — If two or more values appear with equal highest frequency, all are listed as modes. If all values appear once, the entire dataset is technically multimodal.
• Is this population or sample standard deviation? — This tool calculates population standard deviation (σ), dividing by N. For sample standard deviation (s), divide by N−1 instead.