This free, easy-to-use ductulator helps you quickly calculate duct velocity and pressure drop based on design airflow — no charts, no guesswork, and no physical duct wheel required.

Calculate duct size by CFM instantly. Free ductulator for round & rectangular ductwork with velocity, friction loss, and return air sizing. No signup needed.

Jun 3, 2025 · Our Ductwork Calculator, which some call a ductulator, gives accurate results for duct sizing diameter when the right information is plugged into it.

Free HVAC ductwork sizing calculator. Calculate duct dimensions, CFM, velocity (FPM), friction loss, and material costs. Professional-grade tool for contractors.

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

Save time on the job and do less manual math by using our free, online ServiceTitan Ductulator to easily calculate the right size duct for your projects. Below we walk through the various formulas you …

Our comprehensive HVAC duct calculator supports both imperial and metric units, helping contractors and homeowners worldwide determine optimal duct sizes, calculate airflow rates, and analyze air …

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 system …

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

Easily calculate duct size with our Ductwork Calculator. Get accurate airflow, width, and height for efficient HVAC design instantly.