6 calculators in this category.
Duct Size Calculator Use airflow with a velocity or friction target to calculate round or rectangular duct dimensions. Duct Shape Converter Convert round, rectangular, and flat-oval dimensions using the selected area or friction basis. Rectangular Duct Transition Calculator Use opening dimensions, offsets, and a selected wall-angle limit to calculate required length or check transition angles. Flex Duct Installation Impact Calculator Use compression geometry or matched pressure tests to estimate installed flex-duct loss and pressure margin. Duct Volume Calculator Combine inside duct dimensions, segment length, and quantity to calculate cross-sectional area and internal volume. Two-Elbow Duct Offset Calculator Enter opposing elbow geometry and offset or straight gap to calculate connector cuts and developed length.