Outlier Calculator
Detect outliers in your data using the IQR (Interquartile Range) method
About Outlier Detection
The IQR method is a robust way to detect outliers using quartiles.
Mild Outliers: Values outside [Q1 - 1.5×IQR, Q3 + 1.5×IQR]
Extreme Outliers: Values outside [Q1 - 3×IQR, Q3 + 3×IQR]
This method is less sensitive to extreme values than methods based on mean and standard deviation.
Use cases: Data cleaning, quality control, identifying unusual observations
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.