Rankine is an absolute temperature scale that uses Fahrenheit-sized degrees.
Rankine to Delisle
Convert rankine (°R) to delisle (°De) instantly. Free online temperature converter with formulas, tables and examples.
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Delisle is a historical temperature scale where 0° represents the boiling point of water.
°De = 559.725 − (°R × 5/6)
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Formula
°De = 559.725 − (°R × 5/6)
°R = 671.67 − (°De × 6/5)
Conversion table
| 419.67 °R | 210.00 °De |
| 455.67 °R | 180.00 °De |
| 491.67 °R | 150.00 °De |
| 509.67 °R | 135.00 °De |
| 527.67 °R | 120.00 °De |
| 536.67 °R | 112.50 °De |
| 545.67 °R | 105.00 °De |
| 558.27 °R | 94.50 °De |
| 671.67 °R | 0.00 °De |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is Rankine (°R). Rankine is an absolute temperature scale that uses Fahrenheit-sized degrees.
What is the destination unit in this conversion?
The destination unit is Delisle (°De). Delisle is a historical temperature scale where 0° represents the boiling point of water.
How do I convert Rankine to Delisle?
Use the formula °De = 559.725 − (°R × 5/6). For example, converting a sample value follows the same equation shown in the conversion table above.
Is the Rankine to Delisle conversion exact?
Yes. The relationship between the two scales is a fixed linear equation, so the conversion is mathematically exact with no rounding of constants.
Where is this conversion commonly used?
Temperature conversions like this one appear in science, engineering, weather reporting, and historical or regional references that still use Delisle.
Can I convert Delisle back to Rankine?
Yes. Use the reverse formula °R = 671.67 − (°De × 6/5) to convert Delisle back to Rankine.
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About this conversion
This page converts Rankine (°R) into Delisle (°De), two scales used to measure temperature.
Rankine to Delisle conversions come up in science, engineering, weather reporting, and historical references, depending on which scale is in use.
The formula is °De = 559.725 − (°R × 5/6), a linear equation that accounts for both the scale factor and the zero-point offset between the two scales.
The conversion is exact: it uses fixed constants defined by the relationship between the two scales, not a measured or approximate factor.
Rankine is an absolute temperature scale that uses Fahrenheit-sized degrees. Delisle is a historical temperature scale where 0° represents the boiling point of water.