Hi Product Hunt 👋 I built online-tools.work because I kept re-doing the same shop-floor and engineering calculations in spreadsheets — OEE, Cpk, metal weight, tolerances, beam deflection, WBGT heat stress, and dozens more. It's now 207 calculators across 13 industrial domains (quality, metal, chemical, electronics, construction, safety…). A few things I care about: • 100% client-side — every calculation runs in your browser. Nothing is uploaded, nothing is stored. You can literally use it offline after the page loads. • Free forever, no ads, no signup. That's a design constraint, not a phase. • 10 languages, so it's usable on real shop floors outside English. I'd love feedback on which domains or tools to deepen next — and if a calculation you rely on is missing or wrong, tell me and I'll fix it. Thanks for taking a look!

online-tools.work

207 free calculators for manufacturing & industry

207 free calculators for manufacturing & industry