Convert between Kelvin and Rankine. Both are absolute temperature scales used in science and engineering.
Last updated: March 2026 | By Patchworkr Team
Kelvin and Rankine are both absolute temperature scales starting at absolute zero. The difference is that Rankine uses Fahrenheit-sized degrees, while Kelvin uses Celsius-sized degrees.
The conversion is straightforward—just multiply or divide by 1.8 (or 9/5).
Multiply Kelvin by 9/5 to scale from Celsius-sized to Fahrenheit-sized degrees.
Same as Formula #1 (since 9/5 = 1.8). Use whichever is more convenient.
Multiply Rankine by 5/9 (or ≈0.5556) to scale back to Celsius-sized degrees.
Convert 300 K to Rankine (step-by-step)
Step: Multiply by 9/5 (or 1.8)
| Kelvin | Rankine |
|---|---|
| 0 K | 0 °R |
| 233.15 K | 419.67 °R |
| 273.15 K | 491.67 °R |
| 283.15 K | 509.67 °R |
| 293.15 K | 527.67 °R |
| 298.15 K | 536.67 °R |
| 310.15 K | 558.27 °R |
| 323.15 K | 581.67 °R |
| 373.15 K | 671.67 °R |
| 773.15 K | 1391.67 °R |
They give identical results. Use whichever is more convenient—1.8 is simpler; 9/5 shows the underlying ratio.
Multiply the Kelvin value by 9/5 or 1.8.
0°R. Both scales start at absolute zero.
Kelvin suits metric, Rankine suits imperial systems.
Kelvin is the international standard; Rankine is very rare outside engineering.
491.67°R (freezing point of water).
Yes, both start at zero (absolute zero).
671.67°R (boiling point of water).
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