Stair Calculator (Rise / Run / Stringer)

Building Code Aware
This calculator checks residential code compliance for safe stair construction.

Total Vertical Height (Floor-to-Floor)

Input Mode

Preferred Riser Height

Typical: 150-190 mm (6-7.5 in)

Number of Risers Must be a whole number

Tread Depth (Run)

Typical: 250-280 mm (10-11 in)

Output Unit