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Duct Calculator Elite

Duct Calculator Elite

HVAC Ductulator & Duct Sizing

225 ratings
16 reviews
🔧 Utilities
📊 Productivity
$9.99

Details

  • Released
  • Updated
  • July 2, 2013
  • July 12, 2026

Features

Developer

Cyberprodigy LLC
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About

This app simplifies HVAC duct sizing calculations. It computes duct size, velocity, pressure drop, and flow rate with an intuitive interface. Supports various units and duct materials for precise HVAC design.

✓Calculate duct size, velocity, pressure drop, flow rate
✓Duct Size by Airflow mode
✓Duct Size by Dimension mode
✓Pressure Drop calculations
✓Customizable units and duct materials
✓Uses ASHRAE Handbook friction loss equations
Show original description

What's New in Duct Calculator Elite

1.5.0

July 12, 2026

• NEW Design tab: calculate your target friction rate from available static pressure, duct length, and fittings (Manual D style), then send it straight into Duct Size by Airflow • NEW Airflow from Heat Load: enter a sensible load and temperature difference to get density-corrected airflow • Redesigned interface with a cleaner, card-based layout • New inline value entry — edit any field in place and confirm with a tap • Lock friction in Duct Size by Dimension and solve for airflow and velocity • Localization improvements across all supported languages, plus compatibility updates for the latest iOS

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User reviews

Most RecentHighest RatedLowest Rated

Instructor

There is a bug in the APP. I use the APP in class and I noticed a bug that is new. Please fix it.
Kees DroogKees Droog

Time saver

Excellent, I use it almost everyday
1978luke19781978luke1978

Excellent, but one major omission

Excellent app, but you guys need to add m3/hr this is the only reason I don’t give you 5 stars
Al.BarrAl.Barr

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Tk0314Tk0314

NOT A GOOD APP

When sizing based upon airflow, the result gives random fractional duct sizes like 5.3 x 9.6; doesn’t allow even numbered duct sizes. Pretty worthless to me, even if it were free.
Poorer for the PurchasePoorer for the Purchase

Response from developer

In this mode, the app calculates the exact duct size required to meet the specified airflow, velocity, friction, and aspect ratio of the duct. Users will typically round to the closest standard duct size that would be required. The actual duct size can also be input into the size by dimension calculator within the app to see what airflow, velocity and friction it will produce.

See 11 more reviews

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FAQ

What does Duct Calculator Elite do?

Duct Calculator Elite is a professional tool designed to simplify HVAC duct sizing. It allows users to calculate essential parameters like duct size, air velocity, pressure drop, and flow rate for ductwork systems. The app features an intuitive interface for precise value entry and offers multiple calculation modes to suit different design needs.

What are the key features of this app?

Key features include calculating duct size based on airflow or dimensions, determining pressure drop, and converting between various ducting parameters. Users can specify rectangular duct aspect ratios and lock certain variables while solving for others. The app also offers extensive customization for units (dimensional, airflow, velocity, pressure loss), duct materials, air temperature, and elevation.

How much does Duct Calculator Elite cost?

Duct Calculator Elite is a paid application. The price is a one-time purchase, and there are no ongoing subscription fees or in-app purchases mentioned for its core functionality. This provides users with full access to all its features upon purchase.

What devices is Duct Calculator Elite compatible with?

The application is designed for use on Apple devices, specifically mentioning compatibility with iPhone, iPad, and iPod Touch. It leverages the capabilities of these devices to provide a portable and powerful duct sizing solution for professionals on the go.

How can I use this app for HVAC projects?

This app is ideal for HVAC professionals needing to quickly and accurately size ductwork. You can use it to determine the correct dimensions for round or rectangular ducts based on required airflow and velocity, or to calculate pressure loss for existing duct runs. Its comprehensive unit and material settings ensure accurate calculations for diverse project specifications.