CalcBin
184 free online tools for calculations & conversions
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Jay K.

CalcBin - 184 free online tools for calculations & conversions

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CalcBin offers 184 free online calculators, converters, and generators—no signup, no cookies, no BS. From BMI calculators to currency converters, from QR code generators to image compressors, we built the tools we needed for everyday tasks. Fast, privacy-focused, mobile-friendly. Ad-free. Built by developers, for everyone.

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Jay K.
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Hey Product Hunt! 👋 I'm Jay Kiz, and I built CalcBin after getting frustrated with ad-bloated calculator sites that track everything you do. The problem: Need to convert kg to lbs? You'll find 20 sites with 10 ads each, cookie banners, newsletter popups, and tracking scripts. Just to do basic math. The solution: CalcBin - 179 free tools that respect your privacy. No signup, no cookies, no nonsense. What's inside: - 21 calculators (BMI, loan, percentage, tip, etc.) - 14 converters (units, currency, temperature) - 8 generators (UUID, QR codes, passwords) - 7 checkers (JSON formatter, regex tester) Built with: Next.js, TypeScript, Tailwind. All client-side processing—your data never leaves your browser. Why now: After Show HN brought 10x traffic spike (496 → 4,984 visitors), we've been polishing UX and adding the most-requested tools. Try it: https://calcbin.com What tools should we build next?