Convert Celsius to Rankine
To convert degrees Celsius to degrees Rankine, use °R = °C × 1.8 + 491.67: 15 °C = 518.67 °R, and 0 °C = 491.67 °R.
1 °C = 493.47 °R
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk Celsius to Rankine converter to paste a column from Excel.
How to Convert Celsius to Rankine
- 1 °C = 493.47 °R
- 1 °R = -272.5944444 °C
- Example: convert 15 °C to °R: 15 °C = (15 × 1.8 + 491.67) °R = 518.67 °R
Formula
°R = °C × 1.8 + 491.67
Derivation from SI units:
- T(K) = t(°C) + 273.15 (exact, by definition)
- T(K) = T(°R) × 5/9; T(°R) = t(°F) + 459.67
- Solving for °R: °R = °C × 1.8 + 491.67
Both units are defined exactly, so the factor is exact. Celsius definition: degree Celsius; Rankine definition: degree Rankine.
Worked examples
- A reading of 10 °C converts to 509.67 °R.
10 × 1.8 + 491.67 = 509.67 °R - A value of 60 °C is 599.67 °R.
60 × 1.8 + 491.67 = 599.67 °R
Celsius to Rankine conversion table
| Celsius (°C) | Rankine (°R) |
|---|---|
| -273.15 °C | 0 °R |
| -196 °C | 138.87 °R |
| -80 °C | 347.67 °R |
| -40 °C | 419.67 °R |
| -20 °C | 455.67 °R |
| -18 °C | 459.27 °R |
| -10 °C | 473.67 °R |
| 0 °C | 491.67 °R |
| 4 °C | 498.87 °R |
| 10 °C | 509.67 °R |
| 15 °C | 518.67 °R |
| 20 °C | 527.67 °R |
| 21 °C | 529.47 °R |
| 25 °C | 536.67 °R |
| 30 °C | 545.67 °R |
| 37 °C | 558.27 °R |
| 40 °C | 563.67 °R |
| 50 °C | 581.67 °R |
| 60 °C | 599.67 °R |
| 80 °C | 635.67 °R |
| 100 °C | 671.67 °R |
| 121 °C | 709.47 °R |
| 150 °C | 761.67 °R |
| 180 °C | 815.67 °R |
| 200 °C | 851.67 °R |
| 250 °C | 941.67 °R |
| 500 °C | 1391.67 °R |
| 1000 °C | 2291.67 °R |
Where it's used
Celsius are used for weather, cooking and body temperature in most countries, while degrees Rankine appear in US thermodynamics and gas-law calculations in inch-pound units. Both measure thermodynamic temperature, so the conversion is a fixed factor.
Celsius to other temperature units
| Conversion | 1 °C equals |
|---|---|
| Celsius to Fahrenheit | 33.8 °F |
| Celsius to Kelvin | 274.15 K |
| Celsius to Rankine | 493.47 °R |
Frequently asked questions
What is the formula for degrees Celsius to degrees Rankine?
°R = °C × 1.8 + 491.67. For example, 15 °C = 518.67 °R.
What is 0 °C in °R?
0 °C = 491.67 °R, and 100 °C = 671.67 °R.
How do I convert a temperature difference from °C to °R?
For a difference (an interval), ignore the offset and multiply by 1.8 only: a change of 10 °C is a change of 18 °R.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Section 2.3.1 and Table 4, degree Celsius.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "degree Rankine (°R)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Celsius to Rankine. Retrieved October 17, 2026, from https://scientificconverters.com/temperature/celsius-to-rankine/
IEEE
Scientific Converters, "Convert Celsius to Rankine," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/temperature/celsius-to-rankine/