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RapidCalc
300+ Browser utilities, calculators & converters
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.
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!
RapidCalc was submitted on Product Hunt and earned 8 upvotes and 1 comments, placing #78 on the daily leaderboard. 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.
On the analytics side, RapidCalc competes within Productivity, Privacy and Developer Tools — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how RapidCalc performed against the three products that launched closest to it on the same day.
Who hunted RapidCalc?
RapidCalc was hunted by Nivas jayaseelan. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of RapidCalc including community comment highlights and product details, visit the product overview.
Nivas jayaseelan