Convert metric and imperial units across 8 measurement categories with live matrix.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Choose Length, Weight, Temperature, Speed, Area, Volume, Digital, or Time.
Type the quantity to convert and select the initial unit.
View the converted value or browse the live comparative table for all unit equivalents simultaneously.
Multiply the Celsius temperature by 9/5 (or 1.8) and add 32. For example, 20°C becomes (20 * 1.8) + 32 = 68°F.
Exactly 2.54 centimeters are equal to 1 international inch.
Zero-egress companion tools in the Unit & Code Converters suite
Encode plain text to Base64 or decode Base64 back to text.
Convert pixels to rem and em values with custom base font size.
Convert temperatures across Celsius, Fahrenheit, Kelvin, Rankine, Delisle, and Newton.
