# Ductulator: HVAC Calculator

> Airflow, CFM & Duct Sizing

Canonical page: [https://chrome-stats.com/d/id6790622859](https://chrome-stats.com/d/id6790622859)

## Overview

- **ID:** `id6790622859`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Foster Apps LLC
- **Category:** Utilities
- **Version:** 1.0.1
- **Last updated:** 2026-08-08
- **First published:** 2026-07-31
- **Size:** 29 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/ductulator-hvac-calculator/id6790622859)
- **Website:** [https://fosterapps.com/duct/](https://fosterapps.com/duct/)
- **Privacy policy:** [https://fosterapps.com/duct/privacy/](https://fosterapps.com/duct/privacy/)

## Description

Size a duct from airflow in seconds — round, rectangular, or a whole trunk-and-branch run, right from the job site.

Stop guessing duct sizes.

Ductulator turns your airflow into the exact round or rectangular duct size you need — plus the friction rate, right from the job site.

Built for HVAC contractors and DIY installs alike:
• Round and rectangular sizing from CFM and target velocity, fully free
• Reverse mode — already have a duct size on hand? See what airflow it can carry (Pro)
• Branch calculator — size a trunk and every branch run at once, with a warning if they don't add up (Pro)
• Every duct material — Galvanized, Flex Duct, PVC, Fiberboard (Pro)
• Save sizings by job and share a polished PDF with your crew (Pro)

No account, no ads, no guesswork — just the numbers you need before you cut metal.

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Privacy Policy: https://fosterapps.com/duct/privacy/
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Rankings

- #1,644,611 — Overall

## Similar extensions and apps

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6790622859)