Formula – How to calculate Delisle
| To Delisle (°D) | From Delisle (°D) | |
| Celsius (°C) | (100 – °C) x (3/2) = °D | 100 – (°De x (2/3)) = °C |
| Fahrenheit (°F) | (212 – °F) x (5/6) = °D | 212 – (°De x 6/5) = °F |
| Kelvin (K) | (373.15 – K) x (3/2) = °D | 373.15 – (°De x 2/3) = K |
| Rankine (°R) | (671.67 – °R) x (5/6) = °D | 671/67 – (°De x 6/5) = °R |
| Rømer (°Rø) | (60 – °Rø) x (20/7) = °D | 60 – (°De x 7/20) = °Rø |
| Réamur (°Ré) | (80 – °Ré) x (15/8) = °D | 80 – (°De x (8/15)) = °Ré |
| Newton (°N) | (33 – °N) x (50/11) = °D | 33 – (°De x 11/50) = °N |
What is the Delisle temperature scale?
Delisle is a temperature scale invented in 1732.
The Delise scale used the boiling point of water as 0°De. The freezing point of water is 150°D. Unlike all other temperature scales (except for Celsius as originally proposed, which originally had a boiling point of 0° and a freezing point of 100°), a higher temperature number means colder, and a lower temperature number means warmer.