Delisle to Celsius Conversion Calculator: Free Online Tool
Convert degrees Delisle to degrees Celsius with our free online temperature converter.
Delisle to Celsius Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Delisle).
- The converted value in Celsius 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 Delisle to Celsius
Temperature conversions like Delisle to Celsius use specific non-linear formulas.
Formula:
°C = 100 - °De × 2/3Example Calculation:
Convert 10°De: 100 - (10 × 2/3) = 93.3°C
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.
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What is a Delisle and a Celsius?
The Delisle scale (°De) is a historical temperature scale where the boiling point of water is set at 0 degrees and the freezing point at 150 degrees. The scale decreases as thermal energy increases.
Degree Celsius (°C) is a unit of temperature on the Celsius scale, a temperature scale named after the Swedish astronomer Anders Celsius. It is one of the most common temperature scales used worldwide, particularly in science and in most countries for everyday measurements. The scale defines 0°C as the freezing point of water and 100°C as the boiling point of water at standard atmospheric pressure.
Note: The Delisle is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Celsius belongs to the metric (SI) system.
History of the Delisle and Celsius
Invented by the French astronomer Joseph-Nicolas Delisle in 1732 for use in Russia. He defined his scale with the boiling point of water as 0 °De and the freezing point as 150 °De. It was used primarily in Russia for about a century.
The Celsius scale was developed by Anders Celsius in 1742. Originally, he proposed a scale where 0° represented the boiling point of water and 100° represented the freezing point. This scale was later inverted by Carl Linnaeus or Jean-Pierre Christin to the form we use today. The degree Celsius was adopted as part of the International System of Units (SI), where it is defined relative to the Kelvin scale (0°C = 273.15 K).
Common Uses for degrees Delisle and degrees Celsius
Explore the typical applications for both Delisle (imperial/US) and Celsius (metric) to understand their common contexts.
Common Uses for degrees Delisle
- Historical Significance: Of interest in the history of thermometry, particularly in Russia.
- Not used in modern scientific or general applications.
Common Uses for degrees Celsius
- Weather: Everyday weather reporting and forecasting in most parts of the world.
- Domestic: Domestic temperature settings (thermostats, ovens).
- Science: Scientific research, especially in chemistry and biology, alongside Kelvin.
- Medical: Medical temperature measurements.
- Culinary: Food storage and cooking temperatures.
Frequently Asked Questions
Questions About Delisle (°De)
What are the freezing and boiling points of water in Delisle?
Water boils at 0 °De and freezes at 150 °De. Note that the scale is inverted compared to Celsius or Fahrenheit.
Why does the Delisle scale decrease with increasing temperature?
Delisle set the boiling point of water as his zero reference and measured the contraction of mercury as it cooled, leading to higher numbers for colder temperatures.
How does Delisle relate to Celsius?
The relationship is °De = (100 - °C) × 3/2.
About Celsius (°C)
Is Celsius the same as Centigrade?
Yes, 'Celsius' and 'Centigrade' refer to the same temperature scale. The name was officially changed to Celsius in 1948 to honor Anders Celsius and avoid confusion with 'centigrade' as an angular unit.
How does Celsius relate to Kelvin?
The Celsius scale is defined relative to the Kelvin scale, the SI base unit for temperature. A temperature difference of 1°C is equal to a difference of 1 K. To convert Celsius to Kelvin, add 273.15 (K = °C + 273.15).
Why is Celsius used so widely?
Its definition based on the freezing and boiling points of water at standard pressure makes it intuitive for everyday life and many scientific applications. It provides a convenient reference range for common environmental temperatures.