How do I convert Celsius to Rankine?

Use the formula °Ra = °C × 1.8 + 491.67. The Rankine scale is an absolute scale that uses Fahrenheit-sized degrees, so it equals (°C + 273.15) × 9/5. For example, 0 °C = 491.67 °Ra.

Is this converter accurate?

Yes. It applies the exact relation °Ra = °C × 1.8 + 491.67 — note the additive offset, which makes temperature conversions non-proportional unlike length or mass.

Is my data sent anywhere?

No. The converter is privacy-first — every calculation runs locally in your browser and nothing you type leaves your device.

Celsius to Rankine Converter

This free temperature converter changes Celsius (°C) into Rankine (°Ra) and back again. Rankine is an absolute temperature scale that uses Fahrenheit-sized degrees, so the conversion is °Ra = °C × 1.8 + 491.67 — note the additive offset that makes temperature conversions non-proportional.

Type a value in either field — the result updates in real time. The reference table below shows common conversions at a glance. All calculations run entirely in your browser with no data sent to any server.