Calculators

The SMACNA Duct System Calculator has detailed instructions and calculations to enable HVAC system designers to design an average duct system witho...

This calculator is used for sizing pipe systems carrying natural gas of 0.60 specific gravity at approximately eight (8) inches water column pressu...

This durable two-sided plastic sizing wheel comes with a complete instruction manual for residential and commercial duct-sizing procedures. Designe...

Laser Dimension Master 130 is a one-person laser measuring tool for distances, areas and volumes. It is easier and faster to use than a tape measur...

2021  IAPMO DWV Sizing Calculator

2021 Drain Waste and Vent Pipe Sizing Calculator

This Sizing Calculator is based on the 2021 Uniform Plumbing Code (UPC) and the 2021 Uniform Mechanical Code (UMC) and is used for sizing pipe syst...