Temperature Converter
F = C × 9/5 + 32. K = C + 273.15. Values below 0 K are rejected.
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How to convert temperature
- Enter a temperature.
- Pick from and to scales.
- Read the converted value.
- Absolute zero is 0 K.
Temperature
Celsius, Fahrenheit, and Kelvin with offsets
| C to F | F = C × 9/5 + 32 |
|---|---|
| C to K | K = C + 273.15 |
| F to C | C = (F − 32) × 5/9 |
Celsius, Fahrenheit, and Kelvin
Conversions go through Kelvin so absolute zero is enforced. K = C + 273.15. C = (F − 32) × 5/9. Values below 0 K are rejected. This is the thermodynamic scale, not a weather API.
Celsius to Fahrenheit
The pair page Celsius to Fahrenheit uses the same formulas. 0 °C = 32 °F. 100 °C = 212 °F. −40 is the same on both Celsius and Fahrenheit.
Not a forecast
No city temperature feed. For a cooking oven conversion this is enough. Medical body-temperature interpretation is not on this page.
Temperature converter questions
Does this page upload what I type?
No. The work runs in the page you opened. CZNull does not receive the input.
Why reject some Kelvin values?
Nothing is below absolute zero on this scale.
Rankine?
Not on this page.
Is 273.15 exact here?
Yes, the conversion uses 273.15 as written.
Weather for a city?
Out of scope. This is unit conversion only.