Air Duct Calculator

Air Duct Calculator – HVAC Calculation Tools

Air Duct Calculator is a practical tool for HVAC technicians, engineers, contractors, and students who need quick air duct calculations.

Calculate duct dimensions, airflow, air velocity, pressure loss, and fitting measurements with a simple, professional interface.

Key Features

Duct Size Calculator: Calculate required duct area and suggested rectangular or round duct dimensions.

Airflow (CFM) Calculator: Calculate airflow using duct area and air velocity.

Velocity Calculator: Determine air velocity from airflow and duct dimensions.

Friction Loss Calculator: Estimate duct friction loss based on airflow, duct size, material, and length.

Equivalent Length Calculator: Account for fittings when calculating total equivalent duct length.

Duct Fitting Loss: Calculate fitting-related pressure loss for elbows and other duct fittings.

Transition Calculator: Work with rectangular and round duct transitions.

Rectangular to Round Converter: Convert between rectangular duct dimensions and equivalent round duct diameters.

Duct Weight Calculator: Estimate duct material weight based on the entered specifications.

Designed for HVAC Work

Whether you are checking duct dimensions, estimating airflow, or working with duct fittings, Air Duct Calculator brings essential HVAC calculation tools together in one convenient app.

Simple. Practical. Professional.

Download Air Duct Calculator and simplify your everyday duct calculation tasks.

Note: Results depend on the accuracy of your inputs and the calculation methods used. Verify critical HVAC designs against applicable codes, standards, and engineering requirements.