Trimmed Mean Calculator
Remove the chosen percentage from each tail before averaging.
Results and explanation
Enter your inputs to get started.
Numbers are processed locally. Results use floating-point arithmetic and up to 10 significant digits. List fields accept commas, spaces or line breaks.
How to use this calculator
Sort the data and remove the selected percentage from each end before averaging. The count removed from each tail is rounded down.
Worked example
For 1, 2, 3, 4, and 100 with 20% trimmed from each tail, the remaining mean is 3.
Check the units and assumptions before using your result. Explore related calculators or read our statistics guides.