Convert degrees Celsius to degrees Rankine

1 °C=493.47°R

Use the converter below to change any degrees Celsius value into degrees Rankine instantly — with formula, conversion table, and real-world examples.

You have

Equals

493.47

Conversion formula

Forward

°R = (°C + 273.15) × 9/5

Reverse

°C = °R × 5/9 − 273.15

These temperature formulas are exact — no approximation involved.

About both units

From

Celsius

°C

The Celsius scale defines 0 °C as the freezing point of water and 100 °C as the boiling point at standard atmospheric pressure. Proposed by Anders Celsius in 1742, it is the everyday temperature unit in all countries except the US, Belize, the Bahamas, the Cayman Islands and Liberia.

Real-world: Room temperature is about 20 °C. Normal body temperature is 37 °C. Typical fridge setting is 4 °C. European winter can reach −20 °C; desert summer 45+ °C.

Read full celsius reference →

Rankine

°R

The Rankine scale is an absolute scale whose degree size matches Fahrenheit. Zero °R is absolute zero (−459.67 °F). It is used in some US engineering thermodynamics — mainly aerospace, power plants and propulsion — where Fahrenheit-based calculations need an absolute reference.

Real-world: Room temperature ≈ 527 °R. Water boils at 671.67 °R. US rocket-engine thermodynamics textbooks use Rankine.

Read full rankine reference →

Celsius to Rankine conversion table

Common degrees Celsius to degrees Rankine values for quick reference.

Celsius (°C)	Rankine (°R)
-40 °C	419.67 °R
-20 °C	455.67 °R
0 °C	491.67 °R
10 °C	509.67 °R
20 °C	527.67 °R
25 °C	536.67 °R
30 °C	545.67 °R
37 °C	558.27 °R
100 °C	671.67 °R
200 °C	851.67 °R

Tips & common mistakes

Quick tips

0 °C = freezing; 100 °C = boiling. Easy anchor points.
Mental F conversion: double the °C and add 30 (rough). 20 °C → 70 °F (actual 68).
Medical thermometers show 0.1 °C resolution — a rise from 37.0 to 37.5 matters.

Avoid these

Using "degrees centigrade" — the scale was renamed Celsius in 1948.
Assuming a linear relationship between °C and °F without the +32 offset.
Interpreting UK winter forecasts in °F by habit — UK uses °C.

Frequently asked questions

How many degrees Rankine in a celsius?

One celsius equals 493.47 degrees Rankine.

How do I convert degrees Celsius to degrees Rankine?

Temperature conversion is non-linear. From Celsius to Rankine use the specific formula — this tool applies it automatically.

What is 100 degrees Celsius in degrees Rankine?

100 degrees Celsius equals 671.67 degrees Rankine.

Is a celsius bigger than a rankine?

Temperature units compare by scale, not by size of one degree. Celsius and Rankine use different zero points.

How to convert degrees Celsius to degrees Rankine without a calculator?

Use the mental shortcut relevant to these temperature scales — but for accuracy always verify with a calculator.

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