Outlier Calculator
Detect outliers with Tukey’s 1.5 × IQR fences, shown on a box plot.
Your data
Separate values with commas, spaces, or new lines. Pasting from Excel works.
Result
2outliers detected
Outliers: 99, -40
Q1
12
Q3
14
IQR
2
Fences
9 to 17
Box plot
How it works
A value is an outlier if it falls below Q1 − 1.5×IQR or above Q3 + 1.5×IQR. Here that is below 9 or above 17.