Fahrenheit to Réaumur Converter
Convert Fahrenheit (°F) to Réaumur (°Ré) instantly. Formula: °Ré = (°F - 32) × 4/9.
Temperature Converter
5 units available
1 °F = -13.777778 °Ré
Formula:
°Ré = (°F - 32) × 4/9With your value: 1 °F = -13.77777778 °Ré
Other Fahrenheit to Réaumur conversions
Fahrenheit to Réaumur Conversion Table
| Fahrenheit (°F) | Réaumur (°Ré) |
|---|---|
| 0.5 | -14 |
| 1 | -13.777778 |
| 2 | -13.333333 |
| 5 | -12 |
| 10 | -9.777778 |
| 15 | -7.555556 |
| 20 | -5.333333 |
| 25 | -3.111111 |
| 50 | 8 |
| 100 | 30.222222 |
| 250 | 96.888889 |
| 500 | 208 |
| 1000 | 430.222222 |
Réaumur to Fahrenheit Conversion Table
| Réaumur (°Ré) | Fahrenheit (°F) |
|---|---|
| 0.5 | 33.125 |
| 1 | 34.25 |
| 2 | 36.5 |
| 5 | 43.25 |
| 10 | 54.5 |
| 15 | 65.75 |
| 20 | 77 |
| 25 | 88.25 |
| 50 | 144.5 |
| 100 | 257 |
| 250 | 594.5 |
| 500 | 1,157 |
| 1000 | 2,282 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Fahrenheit (°F)
Temperature
°F = °C × 9/5 + 32 exactly; the conversion is affine, not a single multiplying factor.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Réaumur (°Ré)
Temperature
Traceable to the kelvin, defined by fixing the Boltzmann constant at 1.380 649 × 10⁻²³ J/K. Celsius and Fahrenheit are exact affine transforms of the kelvin scale.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Fahrenheit to Réaumur
This conversion uses an offset formula, so it cannot be described by a single multiplication factor.
Formula: °Ré = (°F - 32) × 4/9
Reverse: °F = (°Ré × 9/4) + 32
Step-by-Step Example
- Start with your value in Fahrenheit. For example: 5 °F
- Apply °Ré = (°F - 32) × 4/9
- The result is: -12 °Ré
About Fahrenheit
The Fahrenheit scale sets 32°F as the freezing point and 212°F as the boiling point of water. It is primarily used in the United States.
Fun Fact: Daniel Fahrenheit chose 96°F as his upper reference point, based on human body temperature (which he measured slightly inaccurately).
Common uses: weather (US), cooking (US), HVAC.
About Réaumur
The Réaumur scale sets water's freezing point at 0 °Ré and its boiling point at 80 °Ré. It survives in a few European cheese and syrup recipes.
Common uses: historic recipes, history of science.
Frequently Asked Questions
How many Réaumur are in 1 Fahrenheit?
There are exactly -13.7777777778 Réaumur in 1 Fahrenheit.
What is the formula to convert Fahrenheit to Réaumur?
The formula to convert Fahrenheit to Réaumur is: °Ré = (°F - 32) × 4/9. For example, to convert 10 Fahrenheit to Réaumur, you would apply the formula to 10.
What is a Fahrenheit?
The Fahrenheit scale sets 32°F as the freezing point and 212°F as the boiling point of water. It is primarily used in the United States.
What is a Réaumur?
The Réaumur scale sets water's freezing point at 0 °Ré and its boiling point at 80 °Ré. It survives in a few European cheese and syrup recipes.
What are the common uses of Fahrenheit?
The Fahrenheit is commonly used in weather (US), cooking (US), HVAC.
Related Temperature Conversions
Cite this page
UnitConvertLab. (2026). Fahrenheit to Réaumur converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/fahrenheit-to-reaumur