Interquartile Range (IQR) Calculator

Calculate the Interquartile Range (IQR = Q3 - Q1) to measure middle-50% spread.

How It Works & Processing Standards

Enter values above to calculate results automatically. Check each input field for guidance and units.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

Interquartile Range (IQR) Calculator is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Interquartile Range (IQR) Calculator

  1. 1
    Input DataType numbers separated by commas.
  2. 2
    Compute IQRSubtract Q1 from Q3.
  3. 3
    Read ResultInspect the calculated interquartile range.

Common Use Cases

  • Detecting outlier thresholds using the 1.5×IQR rule
  • Comparing non-parametric dataset dispersion
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