Convert Rankine to Fahrenheit

Convert Rankine (°R) to Fahrenheit (°F) instantly and accurately.

Conversion Formula

°F = °R − 459.67

About Rankine

Rankine (°R) is an absolute temperature scale named after Scottish engineer William John Macquorn Rankine. Like Kelvin, it starts at absolute zero (0°R = -459.67°F = 0 K), but uses Fahrenheit-sized degree intervals instead of Celsius-sized ones. It's primarily used in engineering applications in the United States, particularly in thermodynamics and steam power calculations. For reference: water freezes at 491.67°R, room temperature is about 530°R, and water boils at 671.67°R. The relationship is simple: °R = °F + 459.67.

About Fahrenheit

Fahrenheit (°F) was developed by German physicist Daniel Gabriel Fahrenheit in 1724 and remains the primary temperature scale in the United States, Belize, and the Cayman Islands. Water freezes at 32°F and boils at 212°F at standard atmospheric pressure. For Americans, common references include: room temperature (68-72°F), body temperature (98.6°F), and a hot summer day (90-100°F). The scale was originally based on the lowest temperature Fahrenheit could create with ice and salt (-17.8°C or 0°F).

Quick Reference Table

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