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Class Width Calculator — result sheet
Calculate equal histogram class width from a lower boundary, upper boundary, and number of classes.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Equal class width = (upper boundary−lower boundary)/number of classes.
The range is divided into the requested number of equal intervals; the result is a planning width, not an automatic binning rule.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Lower boundary — minimum -1000000000; maximum 1000000000
- Upper boundary — minimum -1000000000; maximum 1000000000
- Number of classes — minimum 1; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Lower boundary | 10 |
| Upper boundary | 50 |
| Number of classes | 5 |
Class width = 8.
Assumptions and limits
- The upper boundary is greater than the lower boundary.
- The number of classes is a positive whole number.
- Endpoint inclusion, rounding, outliers, and histogram conventions are not selected automatically.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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