How to use this calculator
Divide a total rise into evenly sized risers. Enter total rise (inches), maximum chosen riser height (inches). The result updates when you change an input. To compare two sets of inputs, save scenario A, then enter the second set; the result panel shows the difference.
Formula and limits
Riser count = ceiling(total rise ÷ chosen maximum). Actual riser = total rise ÷ count. This does not check building codes, headroom, or tread dimensions.
Worked example
The following example uses the calculator’s starting values. It is an illustration of the method, not a recommended target.
| Input | Example value |
|---|---|
| Total rise (inches) | 108 |
| Maximum chosen riser height (inches) | 7 |
Risers: 16
Riser height: 6.75 inches
Interpreting your result
Confirm actual dimensions, supplier specifications, and site conditions. Quantity estimates do not establish structural adequacy or compliance with building codes. Waste allowances are user assumptions.
Comparing alternatives
Save the first result as scenario A, then change one input. The comparison shows the numeric difference; it does not label either result as better. Choose inputs that describe realistic alternatives. Values shown on screen are rounded, so calculations from rounded intermediate results may differ slightly.