Temperature Difference Converter
Convert a temperature difference, such as a winding temperature rise. A difference is an interval, so only the size of the degree matters and the offset used for readings is left out.
1 Δ°C = 1.8 Δ°F
Common conversions
- 1 Δ°C = 1.8 Δ°F
- 1 Δ°F = 0.5555555556 Δ°C
- 1 ΔK = 1.8 Δ°F
Rise versus reading
A transformer winding rise of 65 °C means 65 K, or 117 Δ°F. It does not mean 149 °F. The 32-degree offset belongs only to converting a reading from one scale to another, which the temperature converter does.
Cable and equipment ratings
Temperature rise limits and derating steps are intervals. Use this page for them and the temperature converter for ambient and conductor readings.
Unit factors
Every unit in terms of the base unit shown. To convert, multiply by the factor of the unit you have and divide by the factor of the unit you want.
| Unit | Equals | What it is |
|---|---|---|
| ΔK | 1 ΔK | Kelvin as a temperature difference. A rise of 1 K is a rise of 1 °C. |
| Δ°C | 1 ΔK | Celsius degree as a temperature difference, equal in size to a kelvin. |
| Δ°F | 0.5555555556 ΔK | Fahrenheit degree as a temperature difference: 5/9 of a kelvin, with no 32-degree offset. |
| Δ°R | 0.5555555556 ΔK | Rankine degree as a temperature difference, the same size as a Fahrenheit degree. |
Frequently asked questions
What is the formula to convert Δ°C to Δ°F?
Δ°F = Δ°C × 1.8. For example, 40 Δ°C is 72 Δ°F.
How do I convert Δ°F back to Δ°C?
Δ°C = Δ°F × 0.5555555556. The Swap button above reverses the direction for any pair of units.
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