How this tool works
The tool converts the input to Celsius as an intermediate value, then applies the selected output scale. This avoids treating temperatures as simple ratios.
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Temperature Converter
Convert all three major temperature scales in one place. Unlike ordinary unit factors, temperature scales require both multiplication and an offset.
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When it is useful
Use it for weather, cooking, laboratory work, engineering specifications and comparing international temperature guidance.
Accuracy and unit standards
Kelvin cannot physically fall below absolute zero (0 K, −273.15 °C). The calculator flags a negative-Kelvin result rather than silently presenting it as physically meaningful.