Fahrenheit to Rømer Conversion Calculator: Free Online Tool
Convert degrees Fahrenheit to degrees Rømer with our free online temperature converter.
Fahrenheit to Rømer Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Fahrenheit).
- The converted value in Rømer will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Temperature category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Fahrenheit to Rømer
Temperature conversions like Fahrenheit to Rømer use specific non-linear formulas.
Formula:
First convert °F to °C: °C = (°F - 32) × 5/9. Then convert °C to °Rø: °Rø = °C × 21/40 + 7.5Example Calculation:
Convert 10°F:
1. °C = (10 - 32) × 5/9 = -12.22°C
2. °Rø = (-12.22 × 21/40) + 7.5 = 1.08°Rø
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Fahrenheit and a Rømer?
Degree Fahrenheit (°F) is a unit of temperature on the Fahrenheit scale, a temperature scale developed by Daniel Gabriel Fahrenheit. On this scale, the freezing point of water is defined as 32°F and the boiling point as 212°F, placing the two points 180 degrees apart. It is primarily used in the United States and a few other countries for everyday temperature measurements.
The Rømer scale (°Rø) is a historical temperature scale where the freezing point of water is set at 7.5 degrees and the boiling point at 60 degrees.
Note: The Fahrenheit is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Rømer belongs to the imperial/US customary system.
History of the Fahrenheit and Rømer
The Fahrenheit scale was proposed in 1724 by the physicist Daniel Gabriel Fahrenheit. He initially defined 0°F based on the temperature of a brine solution (ice, water, and ammonium chloride) and set human body temperature at 96°F. Later refinements adjusted the scale so that water's freezing point was exactly 32°F and boiling point exactly 212°F.
Invented by the Danish astronomer Ole Christensen Rømer in 1701. Rømer based his scale on two points: the freezing point of brine (0 °Rø) and the boiling point of water (60 °Rø). He later observed pure water froze at 7.5 °Rø. Daniel Fahrenheit visited Rømer and reportedly based his own scale on Rømer's work, multiplying the number of degrees by four.
Common Uses for degrees Fahrenheit and degrees Rømer
Explore the typical applications for both Fahrenheit (imperial/US) and Rømer (imperial/US) to understand their common contexts.
Common Uses for degrees Fahrenheit
- US Weather: Everyday weather reporting and forecasting in the United States and its territories.
- US Domestic: Domestic temperature settings (thermostats, ovens) in the US.
- US Medical: Medical temperature measurements in the US.
- US Culinary: Some cooking applications, particularly in recipes originating from the US.
Common Uses for degrees Rømer
- Historical Significance: Primarily of historical interest as a precursor to the Fahrenheit scale.
- Not used in modern scientific or general applications.
Frequently Asked Questions
Questions About Fahrenheit (°F)
Why is the freezing point of water 32°F?
Fahrenheit's initial scale used different reference points. When the scale was later standardized using water, the freezing point landed at 32°F based on the original scale's divisions.
How does Fahrenheit relate to Celsius?
The relationship is linear but involves an offset. To convert Fahrenheit to Celsius, use the formula: °C = (°F - 32) * 5/9. To convert Celsius to Fahrenheit: °F = (°C * 9/5) + 32.
Where is Fahrenheit still commonly used?
The United States is the primary country that uses Fahrenheit for everyday temperature measurements. It's also used in some Caribbean countries and US territories like Puerto Rico, Guam, and the U.S. Virgin Islands. Most other countries use Celsius.
About Rømer (°Rø)
What are the freezing and boiling points of water in Rømer?
Water freezes at 7.5 °Rø and boils at 60 °Rø.
How did Rømer influence Fahrenheit?
Fahrenheit adopted Rømer's use of two reference points and expanded the scale, likely multiplying Rømer's degrees by 4 to avoid fractions and negative numbers for everyday temperatures.
How does Rømer relate to Celsius?
The relationship is °Rø = °C × 21/40 + 7.5.