Duct Calculator

Duct Calculator

LetsFab·2.6 ★·FREE

Screenshots

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Description

This app is developed to Calculate Duct Size Required with available CFM & FPM.

This app calculate Both Rectangular and Round Duct Sizes in Inches.

This App is also Calculate Air Flow rate in CFM and this app is also calculate in Air Velocity in FPM.

The application is designed for engineers HVAC working in the field of design and installation of ventilation systems.

Heating, ventilation, and air conditioning (HVAC) engineers and designers will find this tool to be valuable in their everyday design and construction work

Developer

LetsFab

Developer ID: 7472199106164443626

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Ratings & Reviews

2.6

79 ratings

50,000+ downloads

5★
24%
4★
16%
3★
0%
2★
8%
1★
49%

Recent Reviews

alkeem maintenance

v8.0.0

yes good

Jan 29, 2026

Barry Prospere

vLet'sFab 7.8

every calculation was satisfactory

Jan 24, 2026

William Fields

vLet'sFab 7.8

easy peesie

Apr 13, 2025

Ahmed Mohamed

vLet'sFab 7

Useless

Jun 15, 2024

Brian Neumaier

vLet'sFab 7

Very generic calculator. Zero help for resizing duct work.

Nov 29, 2023

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