About this tool
Paste a list of numbers to get the average, median, mode, range, quartiles and standard deviation.
Mean = Σx ÷ n. The median is the middle value of the sorted list. Sample standard deviation divides by n − 1; population by n. Quartiles use the (n + 1)·p position method.
Formula: x̄ = Σx/n · s = √(Σ(x − x̄)²/(n − 1))
Example: Numbers (separated by commas, spaces or new lines) = 4, 8, 15, 16, 23, 42 → Mean (average) = 18, Median = 15.5.
Quartile methods differ between textbooks and spreadsheets, so Q1 and Q3 can differ slightly from other tools.
Quick steps
- Enter your values — every field shows its unit.
- Press Calculate (or Try an example to see how it works).
- Read the results and copy them if you need them elsewhere.
The calculation runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Mean, Median, Mode & Standard Deviation work?
Mean = Σx ÷ n. The median is the middle value of the sorted list. Sample standard deviation divides by n − 1; population by n. Quartiles use the (n + 1)·p position method.
What should I keep in mind?
Quartile methods differ between textbooks and spreadsheets, so Q1 and Q3 can differ slightly from other tools.
Is my data sent anywhere?
No. The numbers stay on your device; the page only shows the result.