ArchiKist is a growing library of free calculators designed for architects and DIY homeowners. It now features 3 professional tools with CAD-quality visualizations: FAR (3D zoning envelope), Occupant Load (IBC 1004.5), and Stair Design. In addition, there are 9 DIY tools for estimating paint, tile, concrete, and costs. No signup required, and everything is straightforward, with every formula clearly presented. Built independently, the toolset has been shaped by feedback from the community.