Builder's Formulator is the ultimate professional reference tool for general contractors, builders, plumbers, HVAC technicians, and electricians. With over 2,600 formulas, 136 plumbing code charts, 27 technical drawings, and complete ADA accessibility references, it puts an entire engineering library in your pocket.
Construction (11 Categories):
• Builder codes, concrete & excavating, materials needed, lumber calculations
• Roofing, stairs, safe loads, load on walls, acoustic absorption
• Area formulas, material weight for dozens of building materials
Structural Engineering (14 Categories):
• Beam analysis for single-span and cantilevered beams with point, uniform, and triangular loads
• Concrete design for flexure, shear, axial compression, and prestressed concrete
• Masonry, steel, wood design, flat plates, soils, roads & highways
Electrical (14 Categories):
• AC/DC, Ohm's Law, motors, transformers, voltage drop, wiring, batteries
• DC generators, operating costs, kW & lumens, UPS, impedance, frequency
Plumbing & HVAC (22 Categories):
• Pipes & fittings, pressure, drainage & venting, storm drainage, gas piping
• Water heater sizing, pumps, septic & sewage, interceptors, thermal expansion
• Water supply, medical gas piping, swimming pool calculations
• Boiler, HVAC, condensation, water flow
HVAC Systems (19 Categories):
• Ductwork & duct sizing, fan laws, pump laws, gas laws
• Hydronic formulas, psychrometrics, ventilation rates, heating design
• Refrigeration, steam, air change rate, humidity, energy calculations
Financial (6 Categories):
• Mortgage, depreciation, investments, interest formulas, debt ratios
Conversions & Temperature (23 Categories):
• Pressure, volume, linear, area, weight, flow, power, BTU, and more
• 8 temperature scales including Celsius, Fahrenheit, Kelvin, and Rankine
Professional Features:
• Save and compare calculation results
• Share calculations with colleagues and clients
• Favorite frequently used calculators
• US and Metric unit toggle across all calculators
• Works offline - no internet required
Builder's Formulator is FREE to download with 5 calculations per day. Upgrade to Pro for unlimited calculations, saved results, and premium categories.
Every calculator provides detailed breakdowns showing exactly how results are calculated. Input your values, get instant results, and toggle between US and metric units with one tap.
Popular Calculators Include:
Access essential reference materials right from your phone. No more carrying heavy code books to the job site.
ADA Reference (52 Diagrams + 17 Documents):
Plumbing Code Charts (136 Charts in 16 Categories):
Technical Drawings (27 Drawings):
Reference Tables:
