Construction Trades Calculators
Electrical (NEC 2023), plumbing, HVAC (ASHRAE 62.1), structural, carpentry, masonry, and finishing trade calculators for contractors and estimators.
Electrical & Plumbing
Wire gauge (NEC 2023), circuit load, conduit fill, pipe sizing, BTU, duct sizing, and HVAC calculators. Verify results with a licensed professional.
Wire Gauge CalculatorCircuit Breaker Sizing CalculatorElectrical Load CalculatorConduit Fill CalculatorVoltage Drop CalculatorPanel Load Calculator+29 more
35 calculators
Structural & Carpentry
Beam load, concrete mix (ACI 318), rebar, brick count, board feet, roof pitch, framing, and finishing material calculators for contractors.
Beam Load CalculatorColumn Load CalculatorFooting Size CalculatorConcrete Mix CalculatorRebar CalculatorFormwork Calculator+29 more
35 calculators