Free Stair Calculators

Choose from our collection of free 3D stair calculators. Design straight, L-shaped, U-shaped, and double-turn staircases.

Calculate and visualize a straight staircase in 3D. Get step dimensions, rise/run ratios, and export professional drawings. Free online tool.

Design an L-shaped staircase with 90° turn. Choose between winder steps or landing platform. Free 3D calculator with real-time visualization.

Calculate a U-shaped staircase with 180° turn. Configure winder steps or landing platform. Free 3D visualization tool.

Design a U-shaped staircase with two independent 90° turns. Configure each turn separately. Free 3D calculator with professional drawings.