Builder's Formulator

--- What's New in Version 5.0 Completely rebuilt from the ground up. Builder's Formulator has been rewritten with an entirely new codebase, delivering a faster, more modern experience. Massive formula expansion — Now includes over 2,600 formulas, up from 200. Every calculation from our Electrical, Carpentry, and Plumbing Formulators is here, plus hundreds more. New: Structural Engineering — Full beam analysis for single-span and cantilevered beams, concrete design, masonry, steel, wood design, flat plates, soils, and road calculations. New: HVAC Systems — Dedicated section with ductwork sizing, fan laws, pump laws, gas laws, hydronic formulas, psychrometrics, ventilation rates, heating design, refrigeration, and steam system calculations. New: Expanded Plumbing — Pipe sizing and friction loss, drainage and venting, storm drainage, gas piping, septic systems, grease interceptors, thermal expansion, water supply, medical gas piping, and swimming pool calculations. New: ADA Reference Library — 52 accessibility diagrams and 17 reference documents covering wheelchair clearances, grab bars, ramps, parking, elevators, restrooms, and more. New: Technical Drawings — 27 plumbing and mechanical drawings for venting systems, chimney terminations, gas clearances, and water heater installations. New: Plumbing Code Charts — 136 charts and tables covering gas piping, drainage, venting, backflow prevention, medical gas, fixture units, thermal expansion, and sewage disposal. New: Reference Tables — Built-in lookup tables for occupancy loads, brick sizes, lumber dimensions, wire gauge, concrete mixes, and insulation R-values. US & Metric toggle — Switch between US and SI units across all calculators. Favorites & History — Star your most-used formulas and access your complete calculation history. Dark mode interface — Designed for readability on the jobsite.