Built for usefulness first
SpecWhale focuses on fast, memorable, privacy-aware tools for specs, files, code, dates, and practical calculations. The site is designed for static hosting on Cloudflare Pages so pages can load quickly and remain easy for search engines to crawl.
Who builds this
SpecWhale is built and maintained by Redwan, an independent developer. There is no company or investor behind it -- just one person who got tired of hunting down the same conversion factors and formulas across cluttered, ad-heavy sites and decided to build a cleaner reference instead. Every calculator, converter, and reference page is written against a standard, citable formula or a single shared data file rather than copied from another site -- see how tools on this site are reviewed and the conversion factor reference library behind every converter.
Why 3763 tools
The catalog is large because unit conversion, date math, and everyday calculations genuinely have this many distinct, individually searched-for combinations. Every page on SpecWhale is generated from the same verified formula or factor table as every other page in its group, has its own worked example, and links back to the canonical reference table and sibling tools, so the catalog stays internally consistent as it grows.
Get in touch
Found an error, or have a tool you'd like to see added? See the methodology page for how corrections are handled.