Professional-grade MEP calculators. No login required. Use them as often as you need.
Calculate duct size based on CFM, velocity, or friction rate using equal friction or velocity reduction methods.
Size water pipes based on flow rate and velocity limits per ASHRAE guidelines.
Convert between CFM, BTU/hr, and tons of cooling. Calculate supply air requirements.
Calculate air properties: humidity ratio, enthalpy, dew point, and wet bulb temperature.