°R to °C Converter
Free online rankine to celsius for instant temperature conversions.
Includes reference tables for common temperatures, scientific applications, and everyday use.
Features bidirectional conversion.
Last updated · How we build & check our tools
Frequently Asked Questions
Common questions about the °R to °C Converter
Absolute temperature scale using Fahrenheit degrees. 0°R = absolute zero. R = F + 459.67.
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Sources & References
International System of Units (SI): thermodynamic temperature
Thermodynamic temperature is measured in the kelvin (K); °C and °F by defined relations. Conversions between SI and other units use exact, internationally agreed factors maintained by NIST.
International System of Units (SI)
Authoritative definitions for thermodynamic temperature, from the BIPM SI Brochure (9th edition), the defining reference for the SI.