Temperature Converter


Enter values and click Calculate to see results.

About Temperature Converter (Celsius, Fahrenheit, Kelvin, Rankine)

The Temperature Converter helps you quickly convert temperatures between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R). It’s an essential tool for students, engineers, and scientists working in thermodynamics, weather forecasting, and daily conversions.

Temperature Conversion Formulas

Celsius to Fahrenheit: (°C × 9/5) + 32 Fahrenheit to Celsius: (°F − 32) × 5/9 Celsius to Kelvin: °C + 273.15 Kelvin to Celsius: K − 273.15 Kelvin to Rankine: K × 9/5 Rankine to Kelvin: °R × 5/9

These are the standard equations for converting temperatures across the four common scales. Rankine is primarily used in engineering applications in the United States, especially for absolute thermodynamic measurements.

Example:

Input: Convert 25°C to Rankine.

Output: (25 + 273.15) × 9/5 = 536.67°R.

Steps to Use:

  1. Enter the temperature value you wish to convert.
  2. Select the current unit (°C, °F, K, or °R).
  3. Choose the unit to which you want to convert.
  4. Click 'Convert' to get the result instantly.

Frequently Asked Questions

What is Rankine, and where is it used?

Rankine (°R) is an absolute temperature scale used mainly in thermodynamics and aerospace engineering. It’s similar to Kelvin but measured in Fahrenheit increments.

How is Rankine different from Kelvin?

Both Rankine and Kelvin start from absolute zero, but Kelvin uses Celsius-sized units, while Rankine uses Fahrenheit-sized units.

Can I convert directly between Celsius and Rankine?

Yes. Use the formula °R = (°C + 273.15) × 9/5 to convert Celsius to Rankine directly.

Which temperature scale is most used globally?

Celsius is the most widely used scale, Fahrenheit is common in the U.S., Kelvin in science, and Rankine in engineering applications.

Does this converter support all four units simultaneously?

Yes, you can convert between any of the four units — Celsius, Fahrenheit, Kelvin, and Rankine — in one simple step.