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Temperature conversions require both scaling and offset adjustments. This page explains the formulas and gives convenient reference points for daily life and lab work.
Unlike distance or mass, temperature scales are not simple multiples of each other. Celsius and Fahrenheit include offsets, while Kelvin starts at absolute zero. Use the guidance below to keep formulas straight and avoid costly mistakes.
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Every unit below references the SI base value so you can compare readings quickly.
| Unit | Symbol | 1 unit in °C | Notes |
|---|---|---|---|
| Celsius | °C | See formulas below | — |
| Fahrenheit | °F | See formulas below | — |
| Kelvin | K | See formulas below | — |
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Celsius and Fahrenheit define zero at different physical phenomena (freezing water vs. a salted brine). Because of that shift, you must adjust by 32° before scaling the Fahrenheit value.
Kelvin is essential for scientific calculations involving the gas laws, thermodynamics, or absolute temperature differences. It removes negative values and aligns directly with energy equations.
0 °C equals 273.15 K. Kelvin is offset by 273.15 degrees from Celsius, so always include the decimal if your work requires precision.
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