# XinY Units - Convert temperature units from Degrees Fahrenheit to Degrees Rankine

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### Degrees Fahrenheit

The Fahrenheit scale is a temperature scale based on one proposed in 1724 by the physicist Daniel Gabriel Fahrenheit. It uses the degree Fahrenheit (symbol: °F) as the unit. The inner core of Earth is around 9,392 degrees Fahrenheit and made of a hot, dense ball of mostly iron.

### Degrees Rankine

The Rankine scale is an absolute scale of thermodynamic temperature named after the Glasgow University engineer and physicist Macquorn Rankine, who proposed it in 1859. Similar to the Kelvin scale, which was first proposed in 1848, zero on the Rankine scale is absolute zero, but a temperature difference of one Rankine degree (°R or °Ra) is defined as equal to one Fahrenheit degree, rather than the Celsius degree used on the Kelvin scale. Degrees Rankine is still commonly used in engineering and the aerospace industry in the United States.