Practical calculation tools for engineers and industrial businesses.
Industrial Calculators provides practical online engineering and industrial calculation tools for engineers, technicians, electricians, mechanics, maintenance professionals, students and industrial businesses.
Every calculator on this site states the exact formula it uses, explains each variable, and shows a worked example — so you can check the method, not just trust a black-box number. The goal is to save time on routine calculations that engineers and technicians do every day: converting units, sizing cables, estimating compressor power, or working out a machine's running cost.
Industrial Calculators is an independent tool provider. We are not a certification body, and using these calculators does not constitute professional engineering advice or sign-off. For safety-critical or final design work, always verify results against the applicable engineering standard, manufacturer specifications and a qualified professional.
This site is built and maintained by a working screw air compressor engineer who uses these calculations daily, and wanted a fast, ad-free, no-signup place to look them up.