Rankine to Celsius – convert R to °C
Convert Rankine to Celsius (R to °C) when you have absolute temperatures from US-style thermodynamic calculations and want everyday Celsius values. This page opens the main temperature converter with R → °C pre-selected.
Open the interactive R → °C converter:
Use main converter (R → °C) or switch to °C → RYou can also move between °C, °F and K on the homepage using the same four-scale temperature engine.
Quick reference: Rankine to Celsius
To convert Rankine to Celsius use °C = (R − 491.67) × 5/9. A few useful examples:
| Rankine (R) | Celsius (°C, approx.) |
|---|---|
| 0 R | -273.15 °C (absolute zero) |
| 320 R | -95.4 °C |
| 459.67 R | -17.8 °C |
| 491.67 R | 0 °C |
| 540 R | 26.9 °C |
| 672 R | 100.2 °C (boiling water) |
Why convert Rankine to Celsius?
You may go from R to °C when you:
- Check engineering charts, nozzle or turbine data given in Rankine.
- Translate US thermodynamic examples into SI-friendly Celsius values.
- Compare calculated absolute temperatures with everyday weather ranges.
- Prepare lab reports or coursework that must be written in °C.
Other temperature converters on this site
Behind the scenes, the converter routes everything through Kelvin, so °C, °F, K and Rankine always stay consistent with one another.
Last updated: 3 December 2025.