Rankine to Celsius

Convert rankine to celsius instantly. Type in either field — results update live.

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Temperature Rankine Celsius

1 rankine = -272.5944444444 degrees Celsius

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Format

Selected °R values converted to °C using the exact offset formulas from this tool.

Exact offset formulas in both directions, plus a worked example.

°C = °R × 5/9 − 273.15

°R = (°C + 273.15) × 9/5

Multiply Rankine by 5/9, then subtract 273.15 to get Celsius.

Add 273.15 to Celsius, multiply by 9/5 to get Rankine.

Example: convert 540 °R to °C

540 °R → 26.85 °C (rankine to celsius)

Short background on the units used in this conversion.

The Rankine scale is an absolute Fahrenheit-scale system: 0°R is absolute zero and one Rankine degree equals one Fahrenheit degree.

Rankine is used in some US engineering fields, especially thermodynamics and aerospace calculations.

The Celsius scale sets the freezing point of water at 0° and the boiling point at 100° at standard atmospheric pressure.

Celsius is the everyday temperature scale in most countries, on weather forecasts, and in science alongside kelvin.

How do I convert rankine to celsius?

Multiply Rankine by 5/9, then subtract 273.15 to get Celsius. The formula is °C = °R × 5/9 − 273.15.

What is a useful reference point?

0 °R equals -273.15 °C (for example, water freezes at 0°C = 32°F = 273.15 K).

Is this Rankine to Celsius converter private?

Yes. All calculations run locally in your browser. Nothing you type is sent to a server.

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