To convert Delisle to Celsius, use: °C = 100 − (°De × 2⁄3)
Convert Delisle to Celsius Online
Easily convert Delisle (°De) to Celsius (°C) with this free online tool. The Delisle scale is a historical temperature scale once used in 18th- and 19th-century Europe. Though obsolete, it is still referenced in scientific literature and historical research.
This converter is ideal for students, educators, trivia enthusiasts, and researchers working with old scientific texts or instruments using the Delisle scale.
Delisle to Celsius Formula
The Delisle scale is inverted, meaning higher °De values represent colder temperatures. Use the formula:
°C = 100 − (°De × 2⁄3)
Example conversions:
0 °De = 100 °C60 °De = 60 °C150 °De = 0 °C
Why Use This Delisle to Celsius Converter?
- 📚 Useful for historical science and education
- 🔁 Supports both directions: °De ⇄ °C
- 🎯 Fast and accurate output with 2 decimal places
- 📱 Fully mobile-friendly and works offline in your browser
- 🧠 Great for trivia, textbooks, and calibration reference
Who Uses the Delisle Temperature Scale?
Although it is no longer in active use, the Delisle scale still appears in:
- 🔬 Historical thermodynamics and chemistry documents
- 📖 Academic papers analyzing legacy instruments
- 🎓 Science education involving obsolete temperature scales
- 🤓 Trivia and quiz enthusiasts exploring scientific history
Convert Celsius to Delisle
To convert Celsius to Delisle, use:
°De = (100 − °C) × 3⁄2
For example: 40 °C = 90 °De
This converter allows you to go both ways — just click “Swap” and enter your value.