Temperature difference converter
Convert a change or gap in temperature between °C, °F, K, °R and °Ré, with no offset.
That's about the same as a day-night swing in spring.
What it means
How big a change is that?
For a reading on a thermometer, use the temperature converter instead: it adds the 32 °F offset that a difference does not have.
Every unit
Your temperature change in every unit
Learn
Three things worth knowing
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Change × 1.8, no + 32
A 1.5 °C rise is 2.7 °F; a 10 °C swing is 18 °F. Divide by 1.8 to go back.
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Why kelvins and degrees Celsius match
The kelvin was defined with the same step size as the Celsius degree; only the zero differs. So any difference is the same number in both.
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Do not add 32
Putting a 2 °C rise through the usual formula gives 35.6 °F, which is a cold day, not a change. A change has no zero to shift.
Shortcuts
Popular temperature change conversions
Background
About temperature differences
Converting a temperature and converting a change in temperature are different sums. 20 °C is 68 °F, but warming by 20 °C is warming by 36 °F: the 32 drops out, because both scales move together.
This is the converter for climate targets, fever, cooking adjustments, thermostat swings and engineering ΔT: one degree Celsius of change is 1.8 degrees Fahrenheit, and exactly one kelvin.