KALKSY

Kelvin ↔ Rankine Converter

Convert absolute temperatures between Kelvin and Rankine for engineering, physics, and thermodynamics calculations.

Units:
Value:
Decimal Places:
Conversion Table
KelvinRankine
253455.4
263473.4
273491.4
283509.4
293527.4
303545.4
313563.4
323581.4
333599.4
343617.4
353635.4
363653.4
373671.4

Understanding Kelvin and Rankine 🧊

Kelvin and Rankine are absolute temperature scales starting at absolute zero.

Kelvin uses Celsius increments, while Rankine uses Fahrenheit increments. Converting between them ensures accuracy in thermodynamics, physics, and engineering calculations.

Key Facts

  • Kelvin (K) is the SI absolute temperature scale.
  • Rankine (°R) is the Fahrenheit-based absolute scale used mainly in US engineering.
  • Both scales start at absolute zero, making them ideal for scientific calculations.

Formulas

  • °R = K × 9/5 - Convert Kelvin to Rankine.
  • K = °R × 5/9 - Convert Rankine to Kelvin.

Kelvin ↔ Rankine Examples

  • Freezing water: 273 K ≈ 491.4°R
  • Room temperature: 293 K ≈ 527.4°R
  • Boiling water: 373 K ≈ 671.4°R
  • Very cold day: 253 K ≈ 455.4°R

FAQs

Why use Rankine instead of Kelvin?

Rankine is used in US engineering and thermodynamics where Fahrenheit increments are required, while Kelvin is standard internationally.

How do I quickly convert Kelvin to Rankine?

Multiply the Kelvin value by 9/5 to get Rankine.

Where are these scales applied?

Kelvin and Rankine are used in physics, thermodynamics, HVAC engineering, and other scientific applications requiring absolute temperature.