Online Stair Calculators

Straight Stair Calculator

Free straight stair calculator, Treads on stringers or closed stringer staircase for building stairs and determining its dimensions (stringers, steps, angles, rise, run.

L Shaped Stair Calculator

Professional L-shaped staircase calculator with drawings to easy find stringer length, landing dimensions, landing height, steps rise and run.

L Shaped Winder Stair Calculator

Professional L-Shaped Winder staircase calculator with drawings to easy find stringer length, Tread dimensions, steps rise and run.

U shaped Stair Calculator

Professional U-Shaped Winder staircase calculator with drawings to easy find stringer length, Tread dimensions, steps rise and run.

U Shaped Winder Stair Calculator

Professional U-shaped staircase calculator with drawings to easy find stringer length, landing dimensions, landing height, steps rise and run.

Wrap Around Stair Calculator

Professional Wrap Around staircase calculator, Great for deck stairs. With drawings to easy find every stringer length, steps rise and run.

Spiral Stair Calculator

Professional Spiral-helical staircase calculator with drawings to easy find inner and outer stringer length, tread dimensions, steps rise and run.

C Shaped Winder Stair Calculator

Professional C-Shaped Winder staircase calculator with drawings to easy find stringer length, Tread dimensions, steps rise and run.

Baluster Spacing Calculator

Professional Baluster Spacing Calculator, on stair steps or on an angle.