Temperature Converter — C, F, K, Free | How to use and interpret results
Convert among Celsius, Fahrenheit and Kelvin from any selected starting scale. This helps compare laboratory Kelvin readings with everyday Celsius while respecting offsets and absolute zero.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
Numbers stay on your device. Nothing is sent to a server.
How to use this tool
Enter a value and choose both scales. Kelvin is written K without a degree sign; physically invalid inputs such as negative Kelvin are not treated as valid temperatures.
Results and examples
273.15 K corresponds to 0 °C and 32 °F. A temperature rise of 10 K is a 10 °C difference, which is distinct from an absolute temperature of 10 K.
Worked example
273.15 K corresponds to 0 °C and 32 °F. A temperature rise of 10 K is a 10 °C difference, which is distinct from an absolute temperature of 10 K.
Limitations
- Pressure-dependent boiling points and thermodynamic states are not calculated.
- This scale conversion does not include sensor calibration or apparent temperature.
Fields
| Field | Guidance and constraints |
|---|---|
| Temperature | Accepted range: -400–3000 · Input step: 0.01 |
| From | Celsius / Fahrenheit / Kelvin |
| To | Celsius / Fahrenheit / Kelvin |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
What is 273.15 K in Celsius?
273.15 K corresponds to 0 °C and 32 °F. A temperature rise of 10 K is a 10 °C difference, which is distinct from an absolute temperature of 10 K.
Are a temperature difference and an absolute reading the same?
Pressure-dependent boiling points and thermodynamic states are not calculated. This scale conversion does not include sensor calibration or apparent temperature.
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