Stair Rise Calculator
Stair Rise Calculator lets you the nearest whole riser count divides total height into equal rises. Enter your own values or load the worked example.
- Copy or download the computed result
- Adjust total rise (cm)
- See the processing method and limits
Method and calculation
The nearest whole riser count divides total height into equal rises.
Inputs and settings
Stair Rise Calculator accepts Total rise (cm) (minimum 0.000001); Target riser (cm) (minimum 0.000001).
Worked example
Stair Rise Calculator example — Total rise (cm): 280; Target riser (cm): 17.5. Computed output: { "risers": 16, "riserHeightCm": 17.5, "treads": 15 }
Output and limitations
Stair Rise Calculator: Geometry only; local building rules determine permitted dimensions.
Technical references: JavaScript numerical operations
Stair Rise Calculator FAQs
Stair Rise Calculator applies the following rule to your input: The nearest whole riser count divides total height into equal rises. The worked example on this page uses the same processor as the result button.
Stair Rise Calculator has these boundaries: Geometry only; local building rules determine permitted dimensions. Start by checking the total rise (cm) field against the units or format shown.
Stair Rise Calculator provides this sample: { "risers": 16, "riserHeightCm": 17.5, "treads": 15 }. Use the sample button to reproduce it, then replace the inputs with your own values.