MFG Calcs

Who MFG Calcs is built for, and why.

Why MFG Calcs exists: calculators with visible formulas, live cost data, import tariffs, and instant cited answers by search or chat — one free, open

About this page

MFG Calcs is a free library of more than 5,400 manufacturing calculators, formula references, guides, converters, and spreadsheet templates, built for engineers, estimators, plant managers, and operations teams.
Every calculator shows its formula, labels its inputs with units, documents its assumptions, and runs entirely in the browser with no login. The math is implemented in code and covered by an automated test suite, so a wrong result cannot silently ship.
The library is built and operated by a small product team in Massachusetts with a long background in B2B and industrial software, and it grows every week based on the problems real manufacturing teams ask us to solve.