Free MEP Engineering Calculators
Fast, practical engineering calculators for HVAC, plumbing and MEP design.
Use the calculators for free. No account required.
HVAC
Calculate minimum breathing-zone outdoor airflow using occupancy, floor area and the selected space type.
HVAC
Calculate minimum exhaust airflow requirements for common commercial and institutional spaces.
HVAC
Size round and rectangular ductwork from any two of flow rate, friction rate, velocity or diameter using Colebrook-White and Darcy-Weisbach.
More calculators coming soon.