Five-Number Summary Calculator
Math
Calculate five-number summary with explicit inputs and a worked example.
Formula
Sort the data; quantiles interpolate at index (n−1)p.
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Uses linear interpolation, also known as the R-7 quantile convention.
Example Calculation
Example inputs
- Data: 1, 2, 3, 4, 5
For 1,2,3,4,5 the summary is 1,2,3,4,5.
Frequently asked questions
How do I use this calculator?
Enter data. The result updates automatically. Use Reset to restore the example values.
What method does it use?
Sort the data; quantiles interpolate at index (n−1)p.. Uses linear interpolation, also known as the R-7 quantile convention.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.