Welcome to the Online Duct Sizing Calculator! This free, easy-to-use ductulator helps you quickly calculate duct velocity and pressure drop based on design airflow — no charts, no guesswork, …

Free online ductulator calculator for HVAC duct sizing, velocity, friction loss, and round to rectangular duct equivalency calculations.

Duct Sizer Pro is a world-class HVAC duct sizing calculator designed for MEP engineers, HVAC contractors, and building services professionals. This professional tool helps you determine …

Free HVAC Duct Calculator for Accurate Duct Sizing Use FieldCamp’s free HVAC duct calculator to find the right duct size based on CFM, velocity, and friction rate. Whether you’re sizing …

This digital duct size calculator provides estimates equivalent to traditional Ductulator tools, offering convenient online duct sizing for HVAC professionals and contractors.

Jun 3, 2025 · Below the calculator, each step of the process is explained in detail, so you can be sure that you’ve got the right duct sizing information for a home that is properly heated and air …

Calculate ductwork size, pressure drop, and velocity for round, rectangular, or oval ducts with Thermist's HVAC Duct Sizer. Utilizes ASHRAE guidelines and NIST data for accuracy.

Use this free Ductulator to calculate velocity, pressure loss, Reynolds number and friction for round or rectangular ducts in any unit.

Easily size ducts with our free online calculator. Efficiently design HVAC systems without cost. Try our user-friendly duct sizing tool today. Quick, free and precise!

Apr 6, 2025 · Easily calculate HVAC duct size and estimate installation cost based on airflow requirements and duct dimensions. Proper ductwork design is crucial for efficient HVAC …