Celsius to Rankine converter (°C to °R)
Convert Celsius (°C) to Rankine (°R) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
How to convert Celsius to Rankine
0 degrees Celsius is equal to 491.67 degrees Rankine.
T(°R) = (T(°C) + 273.15) × 9÷5
Add 273.15 to Celsius to get Kelvin, then multiply by 9÷5:
Example: Convert 20°C to Rankine:
T(°R) = (20 + 273.15) × 9÷5 = 527.67 °R
What is a Celsius?
Celsius (°C) is the metric temperature scale. Water freezes at 0 °C and boils at 100 °C at standard pressure.
What is a Rankine?
The Rankine (°R) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
This page converts temperature from Celsius into Rankine. Use the formula above for the exact relationship between the two units.
How this calculator works
The form on this page is a Celsius-to-Rankine converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the °R result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many °R are in 1 °C?
Use the formula in the section above. Temperature and logarithmic units are not a single multiply-by-a-constant step.
How do I convert Celsius to Rankine?
Add 273.15 to Celsius to get Kelvin, then multiply by 9÷5:
Is this °C to °R converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.