DuctSizer: Duct Calculator

By Alican Basak on AppTrack Ninja.

HVAC sizing: friction & CFM

Size ducts in seconds — right from the ladder. DuctSizer turns airflow into duct sizes instantly. Enter CFM (or L/s) and a friction rate or velocity target, and read every valid size at a glance: round diameter plus rectangular options for the joist depth you actually have. SIZING, FREE • Round and rectangular results, live as you type • Friction and velocity for every option, with clear limit warnings • Imperial and SI units (CFM, L/s, m³/h · in.wg/100 ft, Pa/m) • Material roughness shown for galvanized, spiral, duct board, and flex DUCTSIZER PRO — ONE-TIME PURCHASE • Reverse mode: pick a si…

Categories: Utilities, Productivity

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