Trade Calculator - Sheet Metal
Construction & HVAC Tool
About
This tool simplifies complex calculations for construction and HVAC professionals. It handles feet-inches-fractions arithmetic, trigonometric functions, and specialized trade calculations like rafters and duct sizing. Works offline without ads or subscriptions.
What's New in Trade Calculator
1.0.1
February 12, 2026
FAQ
What is Trade Calculator used for?
Trade Calculator is designed for construction professionals and HVAC technicians to perform calculations involving feet, inches, and fractions. It includes a scientific calculator, specialized trade functions, and HVAC duct sizing.
Does Trade Calculator work offline?
Yes, Trade Calculator works completely offline. No internet connection is required to use its features, making it ideal for job sites.
What kind of trade calculations can Trade Calculator perform?
Trade Calculator can perform calculations for hip and valley rafters, jack rafters, pipe and duct offsets, column and cone layouts, and pitch calculations. It also includes a triangle solver for side and angle calculations.
How does the HVAC duct calculator work?
The HVAC duct calculator uses the ASHRAE equal friction method. You can input any two values (air flow, friction loss, velocity, or duct diameter) to solve for the remaining ones, and it calculates equivalent rectangular duct sizes.
Does Trade Calculator have ads?
No, Trade Calculator does not have ads. The app is free and ad-free, as stated in its description.
Is Trade Calculator available on multiple devices?
Yes, Trade Calculator is supported on both iPhone and iPad devices, as indicated by its platform compatibility.
What is the fraction precision in Trade Calculator?
Trade Calculator offers adjustable fraction precision, allowing users to choose from 1/2 through 1/64 for accurate measurements.
How often is Trade Calculator updated?
Trade Calculator was last updated on February 12, 2026, with version 1.0.1. This indicates a recent update, suggesting ongoing support.