Delisle to Celsius (°De → °C)
Formula
°De → kelvin → °CConversion Table
| °De | °C |
|---|---|
| 0 | 100.00 |
| 1.0000 | 99.333 |
| 2.0000 | 98.667 |
| 3.0000 | 98.000 |
| 4.0000 | 97.333 |
| 5.0000 | 96.667 |
| 6.0000 | 96.000 |
| 7.0000 | 95.333 |
| 8.0000 | 94.667 |
| 9.0000 | 94.000 |
| 10.000 | 93.333 |
| 11.000 | 92.667 |
| 12.000 | 92.000 |
| 13.000 | 91.333 |
| 14.000 | 90.667 |
| 15.000 | 90.000 |
| 16.000 | 89.333 |
| 17.000 | 88.667 |
| 18.000 | 88.000 |
| 19.000 | 87.333 |
| °De | °C |
|---|---|
| 20.000 | 86.667 |
| 21.000 | 86.000 |
| 22.000 | 85.333 |
| 23.000 | 84.667 |
| 24.000 | 84.000 |
| 25.000 | 83.333 |
| 26.000 | 82.667 |
| 27.000 | 82.000 |
| 28.000 | 81.333 |
| 29.000 | 80.667 |
| 30.000 | 80.000 |
| 31.000 | 79.333 |
| 32.000 | 78.667 |
| 33.000 | 78.000 |
| 34.000 | 77.333 |
| 35.000 | 76.667 |
| 36.000 | 76.000 |
| 37.000 | 75.333 |
| 38.000 | 74.667 |
| 39.000 | 74.000 |
| °De | °C |
|---|---|
| 40.000 | 73.333 |
| 41.000 | 72.667 |
| 42.000 | 72.000 |
| 43.000 | 71.333 |
| 44.000 | 70.667 |
| 45.000 | 70.000 |
| 46.000 | 69.333 |
| 47.000 | 68.667 |
| 48.000 | 68.000 |
| 49.000 | 67.333 |
| 50.000 | 66.667 |
| 51.000 | 66.000 |
| 52.000 | 65.333 |
| 53.000 | 64.667 |
| 54.000 | 64.000 |
| 55.000 | 63.333 |
| 56.000 | 62.667 |
| 57.000 | 62.000 |
| 58.000 | 61.333 |
| 59.000 | 60.667 |
| °De | °C |
|---|---|
| 60.000 | 60.000 |
| 61.000 | 59.333 |
| 62.000 | 58.667 |
| 63.000 | 58.000 |
| 64.000 | 57.333 |
| 65.000 | 56.667 |
| 66.000 | 56.000 |
| 67.000 | 55.333 |
| 68.000 | 54.667 |
| 69.000 | 54.000 |
| 70.000 | 53.333 |
| 71.000 | 52.667 |
| 72.000 | 52.000 |
| 73.000 | 51.333 |
| 74.000 | 50.667 |
| 75.000 | 50.000 |
| 76.000 | 49.333 |
| 77.000 | 48.667 |
| 78.000 | 48.000 |
| 79.000 | 47.333 |
Delisle to Celsius Conversion
Converting Delisle (°De) to Celsius (°C) is a common temperature conversion. 1 °De equals 99.333333 °C. For example, 100 °De is equal to 33.333333 °C.
Quick Mental Math: Delisle to Celsius
Divide by 1.50 to convert delisle to celsius.
Why is converting Delisle to Celsius tricky?
The conversion factor requires careful attention to avoid reversing the operation.
Reference Temperatures
Absolute zero: 559.725 °De = -273.15 °C. Water freezing point: 150 °De = 0 °C. Room temperature: 120 °De = 20 °C. Body temperature: 94.5 °De = 37 °C. Water boiling point: 0 °De = 100 °C.
What is Delisle?
Delisle (°De) is a unit of temperature. The Delisle scale measures temperature with zero at the boiling point of water and increasing values downward. One degree Delisle equals 2/3 of a degree Celsius, making it inversely proportional to Celsius. This scale is now mostly historical and not used in modern thermometry [cgpm-resolutions]. Invented by Joseph-Nicolas Delisle in 1732, the scale was devised for scientific observations in Russia. It fixed 0 °De at 100 °C (water boiling point) and increased toward freezing point, opposite to Celsius. The scale fell out of use in favor of Celsius and Kelvin as international standards emerged [cgpm-resolutions]. The Delisle scale is obsolete and retained only in historical scientific texts and specialized archival references. Modern temperature measurements universally use Celsius, Fahrenheit, or Kelvin. Organizations like BIPM do not recognize Delisle for current temperature calibration [bipm-si-brochure].
What is Celsius?
Celsius (°C) is a unit of temperature. Celsius is a temperature scale where 0 °C is the freezing point and 100 °C is the boiling point of water at standard atmospheric pressure. It is defined by the International System of Units (SI) and related to the Kelvin scale by the formula °C = K − 273.15 [cgpm-resolutions]. The Celsius scale was developed by Anders Celsius in 1742. It became internationally accepted and officially incorporated into the SI temperature scales by the CGPM in 1948 for scientific and everyday temperature measurement [cgpm-resolutions]. Celsius is the standard temperature unit for most countries worldwide, including Canada, Europe, and Australia. It is used in weather forecasts, scientific research, and industrial processes as endorsed by ISO and BIPM [bipm-si-brochure].
Common Misspellings
People often search for this conversion using these alternate spellings: Delislee, Delisleu, Delisell, Delislee scale, Delisle temperature, celcius, celsious, celcius, celsius degree. All of these refer to the Delisle to Celsius conversion.