Rømer to Réaumur (°Rø to °Ré) Converter
1 Rømer equals -9.9048 Réaumur (1 °Rø = -9.9048 °Ré). Convert Rømer to Réaumur with formula, table, and examples.
To convert Romer to Reaumur, use the formula: Re = (Ro - 7.5) x 32/21. The Romer scale is the early Danish scale that influenced Fahrenheit, while the Reaumur scale is the historical European scale once standard in France and Germany. Water freezes at 7.5 degrees Ro (0 Re) and boils at 60 degrees Ro (80 Re).
How to Convert Rømer to Réaumur
- Convert to Kelvin: K = (°Rø - 7.5) * 40 / 21 + 273.15
- Convert to Réaumur: °Ré = (K - 273.15) * 4 / 5
- Read the result in Réaumur
Common Rømer to Réaumur Conversions
| Rømer (°Rø) | Réaumur (°Ré) | Status |
|---|---|---|
| -10 °Rø | -26.67 °Ré | |
| 0 °Rø | -11.43 °Ré | |
| 5 °Rø | -3.81 °Ré | |
| 7.5 °Rø | 0 °Ré | |
| 10 °Rø | 3.81 °Ré | |
| 15 °Rø | 11.43 °Ré | |
| 20 °Rø | 19.05 °Ré | |
| 25 °Rø | 26.67 °Ré | |
| 30 °Rø | 34.29 °Ré | |
| 40 °Rø | 49.52 °Ré | |
| 50 °Rø | 64.76 °Ré | |
| 60 °Rø | 80 °Ré | |
| 80 °Rø | 110.48 °Ré | |
| 100 °Rø | 140.95 °Ré | |
| 200 °Rø | 293.33 °Ré |
Good to Know About Rømer to Réaumur Conversion
The history of temperature measurement is the history of scientific collaboration and competition across borders. The Romer scale (influenced Fahrenheit) and the Reaumur scale (once widespread in continental Europe) represent different national contributions to solving the same fundamental problem: how to assign numbers to the sensation of hot and cold.
Rømer to Réaumur: What You Need to Know
The Romer scale was created by Ole Romer, Danish astronomer, around 1701, influenced Fahrenheit. The Reaumur scale was created by Rene Antoine Ferchault de Reaumur, 1730, once widespread in continental Europe. Converting between them bridges different eras and different measurement philosophies in the history of thermometry.
What is a Rømer? °Rø
A temperature scale proposed by Ole Christensen Rømer in 1701. Water freezes at 7.5 °Rø and boils at 60 °Rø. It influenced Fahrenheit's scale development.
Learn more about Rømer →What is a Réaumur? °Ré
A historical temperature scale where water freezes at 0 °Ré and boils at 80 °Ré. Named after René Antoine Ferchault de Réaumur. Once widely used in Europe.
Learn more about Réaumur →Going the other way? Use our Réaumur to Rømer converter.
Rømer to Réaumur FAQ
-
Use the formula Re = (Ro - 7.5) x 32/21. At the freezing point of water: 7.5 Ro = 0 Re. At the boiling point: 60 Ro = 80 Re.
-
This conversion is needed when interpreting historical scientific records, comparing temperature data across different measurement traditions, or completing engineering calculations that mix temperature scales from different national standards.
-
Water freezes at 7.5 Ro = 0 Re. Water boils at 60 Ro = 80 Re. These two fixed points anchor both scales and provide easy verification of any conversion calculation.
Non-Frequently Asked Questions About Rømer to Réaumur
Questions nobody should ask - but someone did.
-
Every temperature feels the same regardless of the scale you use to describe it. A comfortable room is comfortable whether you call it by its Romer or Reaumur value. Temperature scales change the number, not the physics. Your skin cannot tell the difference between measurement systems.
-
Unless you are applying to work in a museum of scientific instruments or writing the world's most comprehensive conversion website, this particular skill would raise more questions than it answers in a job interview. But it does demonstrate attention to detail and a fondness for completeness - qualities any employer should appreciate.
-
Weather apps already struggle to present temperature clearly in one or two scales. Adding Romer and Reaumur would turn a simple forecast into a mathematics lecture. Users would see five or more numbers for the same temperature, causing decision paralysis about whether to bring a jacket. Simplicity in weather communication is not a luxury - it is a safety feature.
Related Articles About Rømer to Réaumur
Need the reverse? Use our Réaumur to Rømer converter. See all Temperature converters.