Reaumur to Fahrenheit Converter
Enter the value that you want to convert Reaumur (°r) to Fahrenheit (°F) or Fahrenheit to Reaumur.Also written as °R to °F conversion.
1 Reaumur = 34.2500000 Fahrenheit
Formula: °F = °Ré × 9/4 + 32
°R to °F — Reaumur to Fahrenheit
10 Reaumur = 54.50000 Fahrenheit
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Why Convert Reaumur to Fahrenheit?
Understanding the Reaumur
The Réaumur scale sets water's freezing point at 0° and boiling point at 80°, created by French scientist René Antoine Ferchault de Réaumur in 1730.
Once widely used in Europe (particularly France, Germany, and Russia), the Réaumur scale (°Ré) has been almost entirely replaced by Celsius. However, it persists in some traditional industries: Italian and Swiss cheese-making (specifying milk temperatures during production), some French cooking traditions, and historical weather records. The scale is notable for having only 80 divisions between freezing and boiling, making each Réaumur degree 1.25 Celsius degrees.
What is Fahrenheit?
Daniel Gabriel Fahrenheit developed this scale in 1724, setting 0°F as the temperature of a brine solution and 96°F as human body temperature.
Fahrenheit (°F) remains the primary temperature scale in the United States, the Bahamas, and a few other countries. Water freezes at 32°F and boils at 212°F. Americans use it for weather reports, cooking (oven temperatures: 350°F, 400°F, 450°F), thermostat settings, and body temperature (98.6°F normal). The scale offers finer resolution for weather — the 0-100°F range covers most human-habitable temperatures.
Temperature Scales in Context
Temperature conversion is one of the few non-linear unit conversions people encounter daily. Celsius dominates scientific work and most countries, Fahrenheit remains standard in the US for weather and cooking, Kelvin is required in thermodynamics and gas law calculations, and Rankine appears in some US engineering applications. Converting between these scales requires formulas rather than simple multiplication.
Reaumur to Fahrenheit metric conversion table
| 0.01 °r | = | 32.02250 °F |
| 0.1 °r | = | 32.22500 °F |
| 1 °r | = | 34.25000 °F |
| 2 °r | = | 36.50000 °F |
| 3 °r | = | 38.75000 °F |
| 4 °r | = | 41.00000 °F |
| 5 °r | = | 43.25000 °F |
| 6 °r | = | 45.50000 °F |
| 7 °r | = | 47.75000 °F |
| 8 °r | = | 50.00000 °F |
| 9 °r | = | 52.25000 °F |
| 10 °r | = | 54.50000 °F |
| 11 °r | = | 56.75000 °F |
| 12 °r | = | 59.00000 °F |
| 13 °r | = | 61.25000 °F |
| 14 °r | = | 63.50000 °F |
| 15 °r | = | 65.75000 °F |
| 16 °r | = | 68.00000 °F |
| 17 °r | = | 70.25000 °F |
| 18 °r | = | 72.50000 °F |
| 19 °r | = | 74.75000 °F |
| 20 °r | = | 77.00000 °F |
| 30 °r | = | 99.50000 °F |
| 40 °r | = | 122.00000 °F |
| 50 °r | = | 144.50000 °F |
| 60 °r | = | 167.00000 °F |
| 70 °r | = | 189.50000 °F |
| 80 °r | = | 212.00000 °F |
| 90 °r | = | 234.50000 °F |
| 100 °r | = | 257.00000 °F |
| 200 °r | = | 482.00000 °F |
| 300 °r | = | 707.00000 °F |
| 400 °r | = | 932.00000 °F |
| 500 °r | = | 1157.00000 °F |
| 600 °r | = | 1382.00000 °F |
| 700 °r | = | 1607.00000 °F |
| 800 °r | = | 1832.00000 °F |
| 900 °r | = | 2057.00000 °F |
| 1000 °r | = | 2282.00000 °F |
How to Convert °R to °F (Reaumur to Fahrenheit)?
We can convert Reaumur to Fahrenheit by using an example.
Example:
Convert 20 Reaumur to Fahrenheit?
We know 1 Reaumur = 34.2500000 Fahrenheit; 1 Fahrenheit = -13.7777778 Reaumur.
20 Reaumur = ___°F
20 × 34.2500000 = 77.00000 °F (we know 1 Reaumur = 34.2500000 Fahrenheit)
Answer:
20 Reaumur = 77.00000 Fahrenheit
Réaumur to Fahrenheit Conversion
Formula: °F = (°Ré × 9/4) + 32:
- Write down the Réaumur temperature.
- Multiply by 9/4 (or 2.25).
- Add 32.
- The result is Fahrenheit.
Solved Examples
Question 1: Convert 80°Ré to Fahrenheit.
Solution:
°F = (80 × 9/4) + 32
= 180 + 32
Answer: 80°Ré = 212°F (boiling)
Question 2: Convert 0°Ré to Fahrenheit.
Solution:
°F = (0 × 2.25) + 32
= 32
Answer: 0°Ré = 32°F (freezing)
Practice Questions
Try solving these on your own to test your understanding:
- Convert 29.6°Ré to °F. (Answer: 98.6°F)
- What is 40°Ré in °F? (Answer: 122°F)
- Convert -16°Ré to °F. (Answer: -4°F)
Key Takeaways
- °F = (°Ré × 9/4) + 32.
- 0°Ré = 32°F, 80°Ré = 212°F.
Reaumur to Fahrenheit Conversion Formula
°F = °Ré × 9/4 + 32
1 Reaumur = 34.2500000 Fahrenheit
1 Fahrenheit = -13.7777778 Reaumur
Frequently Asked Questions
How many Fahrenheit are in 1 Reaumur?
1 Reaumur equals 34.25000 Fahrenheit. Note: Temperature conversion uses a formula, not simple multiplication.
How do I convert Reaumur to Fahrenheit?
Use the conversion formula shown above. For example, 43.25 Fahrenheit equals 5 Reaumur. Temperature scales have different zero points, so a formula (not simple multiplication) is required.
How do I convert Fahrenheit to Reaumur?
Use the reverse formula. 1 Fahrenheit equals -13.77778 Reaumur. See the formula section above for the exact equation.
What is 10 Reaumur in Fahrenheit?
10 Reaumur is equal to 54.50000 Fahrenheit.
What is 100 Reaumur in Fahrenheit?
100 Reaumur is equal to 257.00000 Fahrenheit.