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Engineering ToolBox > Stair Calculator

Calculate unit rise and run

This calculator can be used to calculate the unit rise and run of straight stairs.

Rise

Run

Width

no. of steps

nosing projection

m dm cm mm in ft

Unit rise:

Unit run:

Elevation angle: deg

Offset Steps :

General guidelines

• unit run should not be less than 10 inches (25 cm)
• unit rise should not exceed 7 3/4 inches (20 cm)