About ConversionCalculator.net

ConversionCalculator.net is a free unit conversion tool covering 19 categories and 64 direct conversion pairs, with more added over time. Every formula on the site is sourced from NIST SP 811, Appendix B, the standard US reference for exact unit conversion factors, and the source is shown directly on each conversion page rather than hidden behind the result.

How the tools work

Each converter runs entirely in your browser. Values you enter aren't sent to a server or stored anywhere; the calculation happens locally using the formula shown on that page.

Methodology

Conversion factors are checked against NIST SP 811, Appendix B and, for SI unit definitions, the BIPM SI Brochure (9th edition, 2019). Where a factor is an exact defined constant (such as 1 inch = 2.54 cm), that's stated plainly rather than presented as a rounded approximation.

Cedrick Reese

Ready Utilities was founded by Cedrick Reese, a retired veteran and web developer who enjoys building free, user-friendly online tools that simplify everyday tasks. His journey began in the early 2000s with affiliate marketing and niche site development, which grew into a passion for creating practical digital utilities and calculators. After retiring, he earned a Computer Systems Technician certificate from UEI College, completed Electro-Mechanical Technologies at Tulsa Welding School, and finished the Carpentry program at Florida State College at Jacksonville. Today, he combines his technical background and craftsmanship by building furniture using traditional woodworking methods, gardening, and developing helpful online tools for users worldwide.