Rankine to Triple Point of Water Converter
Unit Converter
Instant · Precise · Universal
6 units available
6 categories total
How to Convert Rankine to Triple Point of Water
To Fahrenheit: °F = °R − 459.67. To Celsius: °C = (°R − 491.67) × 5/9. To Kelvin: K = °R × 5/9.
°R = °F + 459.67. The Rankine scale is to Fahrenheit what Kelvin is to Celsius. Same degree size as Fahrenheit.
For example, 1 Rankine (°R) = -27259.44444 Triple Point of Water (Tₜ).
Rankine to Triple Point of Water — Common Values
| Rankine (°R) | Triple Point of Water (Tₜ) |
|---|---|
| 0.1 | -27309.44444 |
| 0.5 | -27287.22222 |
| 1 | -27259.44444 |
| 2 | -27203.88889 |
| 5 | -27037.22222 |
| 10 | -26759.44444 |
| 25 | -25926.11111 |
| 50 | -24537.22222 |
| 100 | -21759.44444 |
| 500 | 462.7777778 |
| 1000 | 28240.55556 |
About Rankine (°R)
Definition
The degree Rankine is an absolute temperature scale using the Fahrenheit degree size, where 0 °R equals absolute zero (−459.67 °F).
Mathematical Relationship
°R = °F + 459.67. The Rankine scale is to Fahrenheit what Kelvin is to Celsius. Same degree size as Fahrenheit.
Conversion Formula
To Fahrenheit: °F = °R − 459.67. To Celsius: °C = (°R − 491.67) × 5/9. To Kelvin: K = °R × 5/9.
Practical Applications
US engineering thermodynamics calculations, gas turbine design, and some aerospace engineering applications.
Interesting Facts
Water freezes at 491.67 °R and boils at 671.67 °R. The Rankine scale is one of the four main temperature scales still in use.
Common Mistakes
Confusing Rankine with Réaumur — both use 'R' but are completely different scales. Use °R vs. °Ré to distinguish.
Educational Tips
Rankine is to Fahrenheit as Kelvin is to Celsius. Both absolute scales start at 0 = absolute zero, just with different degree sizes.
About Triple Point of Water (Tₜ)
Definition
A unit based on the triple point of water — the unique temperature and pressure at which water coexists as solid, liquid, and gas simultaneously (0.01 °C / 273.16 K).
Mathematical Relationship
1 Tₜ = 0.01 °C = 273.16 K. The triple point is a fixed thermodynamic state, not dependent on pressure corrections.
Conversion Formula
To Celsius: °C = Tₜ × 0.01. To Kelvin: K = Tₜ × 0.01 + 273.15.
Practical Applications
Calibrating precision thermometers, validating temperature measurement systems, and establishing traceability in national labs.
Interesting Facts
The triple point of water requires extreme purity — even tiny impurities shift the temperature. It occurs at 611.657 Pa pressure, much lower than atmospheric.
Common Mistakes
Confusing the triple point (0.01 °C) with the normal freezing point (0 °C). The difference is tiny but critical in precision metrology.
Educational Tips
The triple point is where all three phases coexist. It's a unique, reproducible temperature — that's why it was perfect for defining the kelvin.