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Degree Rankine to Degree Celsius Converter

Type a value — the answer appears instantly. 1 °R = -272.59 °C.

Reviewed by the OmniCalc teamMethod verified 2026-07-01

From unit

To unit
Result

-272.59 degrees Celsius

= -458.67 °F= 0.55556 K

equals -272.59 degrees Celsius

Formula: °C = °R × 5/9 − 273.15

Degree Rankine to Degree Celsius formula

°C = °R × 5/9 − 273.15

Convert 5 degrees Rankine to degrees Celsius

  1. Start with 5 °R.
  2. Apply the formula °C = °R × 5/9 − 273.15.
  3. So 5 °R = -270.37 °C.

Degree Rankine to Degree Celsius conversion table

Degree Rankine to Degree Celsius conversion table
Degrees Rankine (°R)Degrees Celsius (°C)
-40 °R-295.37 °C
-30 °R-289.82 °C
-20 °R-284.26 °C
-10 °R-278.71 °C
0 °R-273.15 °C
5 °R-270.37 °C
10 °R-267.59 °C
15 °R-264.82 °C
20 °R-262.04 °C
25 °R-259.26 °C
30 °R-256.48 °C
35 °R-253.71 °C
36.6 °R-252.82 °C
37 °R-252.59 °C
38 °R-252.04 °C
39 °R-251.48 °C
40 °R-250.93 °C
50 °R-245.37 °C
60 °R-239.82 °C
80 °R-228.71 °C
100 °R-217.59 °C
150 °R-189.82 °C
200 °R-162.04 °C

Unit definitions

What is a degree Rankine?

The degree Rankine is an absolute temperature scale whose zero is absolute zero but whose degree size matches Fahrenheit. It is used in some United States engineering fields, especially thermodynamics and combustion. Water freezes at about 491.67 °R.

What is a degree Celsius?

The degree Celsius is the everyday metric temperature unit, defined so that water freezes at 0 °C and boils at 100 °C at standard pressure. It shares its degree size with the kelvin and is offset by exactly 273.15. It is the standard scale in almost every country except the United States.

Frequently asked questions

What is the formula to convert degrees Rankine to degrees Celsius?

°C = °R × 5/9 − 273.15. For example, 20 °R equals -262.04 °C.

What is 0 °R in degrees Celsius?

0 °R equals -273.15 °C.

Is this degree Rankine to degree Celsius converter free?

Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.

Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.