Convert Fahrenheit to Réaumur

Convert Fahrenheit (°F) to Réaumur (°Ré) instantly and accurately.

Conversion Formula

°Ré = (°F − 32) × 4/9

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).

About Réaumur

Réaumur (°Ré) was developed by French scientist René Antoine Ferchault de Réaumur in 1730 and was widely used across Europe until the 19th century. The scale sets water's freezing point at 0°Ré and boiling point at 80°Ré, creating a more compressed scale than Celsius. While largely obsolete today, it's still occasionally used in specific industries like cheese-making, brewing, and candy production in some European countries. For perspective: room temperature is about 16°Ré, body temperature is roughly 30°Ré, and a hot summer day reaches 32°Ré. The conversion is straightforward: °Ré = °C × 4/5.

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