Average Calculator
Free online average calculator. Find the mean, median, mode, range, sum, min, max, variance, standard deviation, and quartiles from any list of numbers instantly. 100% client-side.
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What is Average Calculator?
An Average Calculator that instantly computes the central tendency and spread of any list of numbers. Enter values separated by commas, spaces, or new lines and it returns the mean (arithmetic average), median, mode, range, sum, count, minimum, maximum, variance, standard deviation, geometric mean, harmonic mean, and the first and third quartiles. All math runs locally in your browser, so nothing is uploaded.
Key Benefits
- Instant mean, median, mode, and range in one view
- Advanced stats: variance, standard deviation, quartiles
- Geometric and harmonic mean for positive datasets
- Flexible input — commas, spaces, semicolons, or line breaks
- 100% client-side — your numbers never leave the device
- One-click copy of the full results summary
Common Use Cases
- •Homework and classroom statistics problems
- •Quick analysis of small datasets without a spreadsheet
- •Computing average grades, scores, or ratings
- •Summarizing survey or measurement results
- •Sanity-checking variance and spread for data quality
How to Use the Average Calculator
- Enter your numbers: Type or paste your numbers into the input box. Separate them with commas, spaces, semicolons, or new lines — the parser handles all of them. Decimals and negative numbers are supported.
- Read the primary results: The four highlighted cards instantly show the mean (arithmetic average), median, mode, and range. Mode lists every most-frequent value, or shows "No mode" if all values are unique.
- Review detailed statistics: Below the cards you get count, sum, minimum, maximum, geometric mean, harmonic mean, variance, standard deviation, and the first and third quartiles.
- Copy the full breakdown: Click the Copy button to copy every statistic to your clipboard as a labeled list, ready to paste into a report, spreadsheet, or homework.
Key Features
- Instant mean, median, mode, and range from any number list
- Advanced metrics: variance, standard deviation, geometric and harmonic mean
- Quartiles (Q1, Q3) and a sorted view of your input
- Flexible separators — commas, spaces, semicolons, or line breaks
- Supports decimals and negative numbers
- One-click copy of the full results summary