Access 22 specialized calculators for mechanical, structural, thermal, electrical, and RF engineering. Calculate gear ratios, beam deflection, stress, torque, fluid flow, heat transfer, Ohm’s law, wire gauge, antenna length, signal strength, and more. Get instant results with formulas, unit conversions, and helpful breakdowns—all free with no registration required.

We built the FreeWWW Engineering Calculator Suite because students, engineers, technicians, and makers often switch between multiple tools to solve related technical problems. The project began with a few essential mechanical calculators. As it evolved, we expanded it into a suite of 22 tools covering mechanical systems, power and motion, structures, thermal analysis, fluid flow, electronics, and RF engineering. We also added formulas, unit conversions, and detailed result breakdowns to make each calculation easier to understand. Our goal is to provide one convenient browser-based workspace for everyday engineering calculations without requiring software installation or registration. We would love to hear which engineering calculator we should add next!

@marc_4321 Looks super exciting and thoughtfully made. Congrats on getting it out into the world! 🚀

Love that it bundles gear ratios, beam deflection, and antenna calculations all in one place without forcing a sign-up. The formula breakdowns next to each result are genuinely useful for double-checking work on the fly.

@marc_4321 Looks super exciting and thoughtfully made. Congrats on getting it out into the world! 🚀

FreeWWW Engineering Calculator Suite

Twenty-two calculators for everyday engineering problems

Twenty-two calculators for everyday engineering problems