Stairs Calculator - Stair Design & Dimensions Calculator | D2Tools.com

Free stairs calculator to design staircases with proper riser height, tread depth, and angle. Calculate step dimensions, stringer length, and materials for safe and comfortable stairs.

Stair Dimensions

Total Rise (Floor to Floor) (mm)

Total Run (Horizontal Space) (mm)

Stair Width (mm)

Headroom Height (mm) - Optional

Enter stair dimensions and click Calculate to see results