Launched this week

RapidCalc

Launched this week

300+ Browser utilities, calculators & converters

6 followers

300+ Browser utilities, calculators & converters

6 followers

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RapidCalc is a zero-backend suite of over 150 browser-based calculation and developer utilities. Spanning 9 categories like Finance, Dev, and Math, the tools execute entirely client-side using pure HTML5, CSS3, and Vanilla JavaScript. Your files and data are never uploaded to a server, ensuring 100% privacy and zero network latency.

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Free

Launch tags:Productivity•Privacy•Developer Tools

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Hey Product Hunt community! I built RapidCalc because I got frustrated with everyday utility sites that force you to create accounts, hit rate limits, or send private data to remote servers just to format JSON, compress images, or calculate an EMI. RapidCalc is built on a strict zero-backend architecture. Everything from matrix operations and CIDR calculations to text comparison and image conversions happens directly in your browser's local sandbox. Nothing you enter ever leaves your machine. The platform is completely free, mobile-optimized, and requires no sign-ups. I’d love your feedback on the speed, UX, and any specific utilities you'd like to see added to the hubs!

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5d ago

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5d ago

Launching RapidCalc: 300+ Zero-Backend Utilities & Converters

Hey everyone!

We're thrilled to officially launch RapidCalc on Product Hunt.

We built RapidCalc because we got tired of utility sites that gatekeep features behind sign-ups, slap on aggressive paywalls, or quietly upload sensitive data to remote backend servers just to format JSON, calculate a loan, or convert an image.

RapidCalc runs entirely client-side using pure Vanilla JavaScript, HTML5, and CSS3. Your data never leaves your browser sandbox, meaning zero data logging, zero latency, and instant execution across 9 dedicated hubs (Finance, Dev, Math, Converters, and more).

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