Free Online Straight Staircase Calculator
A straight staircase is the most common and structurally simple type of staircase design. It consists of a single flight of steps connecting two floors without any turns or landings. This makes it ideal for homes with sufficient linear space and straightforward floor plans.
When calculating a straight staircase, the key dimensions to consider are the total floor-to-floor height, the number of steps, tread depth (run), and riser height. Building codes typically require a riser height between 150mm and 200mm, with an optimal range of 170-180mm for comfortable climbing.
The tread depth should be at least 250mm to provide adequate foot support. The relationship between rise and run follows the comfort formula: 2R + T = 600-640mm, where R is the riser height and T is the tread depth. Our calculator automatically optimizes these values.
Stringer width, material selection, and balustrade configuration all affect both the structural integrity and visual appearance of your staircase. Our 3D calculator lets you experiment with different materials including pine, oak, and veneer, while seeing the results in real-time.
For DIY builders and manufacturers, accurate dimensions are critical. Our calculator provides all measurements needed for cutting and assembly, with the option to export DXF files for CNC cutting machines.