IQR Calculator

IQR Calculator - Percentile, Quartile & Interquartile Range

Enter Your Data

Separate values with commas, spaces, or line breaks

Custom Percentile (Optional)

Enter a value between 1 and 99 to calculate a specific percentile

Results

Basic Statistics

Count (n): -

Minimum: -

Maximum: -

Range: -

Mean: -

Median (Q2): -

Quartiles & IQR
                            Q1 (25th Percentile):
                            -
                        
                            Q2 (50th Percentile):
                            -
                        
                            Q3 (75th Percentile):
                            -
                        
                            IQR (Q3 - Q1):
                            -

Outlier Boundaries

Lower Fence: -

Upper Fence: -

Outliers: None

Sorted Data

Box Plot Visualization

About IQR Calculator

The Interquartile Range (IQR) Calculator helps you analyze your data distribution by calculating quartiles, percentiles, and identifying outliers. The IQR is a measure of statistical dispersion and is calculated as the difference between the third quartile (Q3) and first quartile (Q1).

What is IQR?

The Interquartile Range represents the middle 50% of your data. It's resistant to outliers and provides a robust measure of spread.

Quartiles Explained

Q1: 25th percentile - 25% of data falls below this value
Q2: 50th percentile (median) - middle value
Q3: 75th percentile - 75% of data falls below this value