Temperature converters
Celsius, Fahrenheit, Kelvin and Rankine, converted exactly, with a guard against anything below absolute zero.
Precision (significant figures)
Formula
°F = °C × 1.8 + 32
1 °C = 33.8 °F
All temperature converters
| Converter | Units | Typical use |
|---|---|---|
| Celsius to Fahrenheit | °C → °F | Weather, ovens and body temperature |
| Fahrenheit to Celsius | °F → °C | US recipes, thermostats and fevers |
| Celsius to Kelvin | °C → K | Physics, chemistry and lighting |
| Kelvin to Celsius | K → °C | Scientific data and datasheets |
Common situations
Why people usually need a temperature conversion, and which tool answers it.
The weather, a thermostat or a pool is set in the other scale.
The Fahrenheit formula has an offset, so you can’t just multiply. The risk: dressing wrong or setting the heating far too high.
A thermometer shows one scale and the guidance you’re reading uses the other.
Fever thresholds are given as 38 °C or 100.4 °F. The risk: missing a fever, or worrying about nothing.
A British recipe says gas mark 4, or a US one says 350 °F, and your oven is in Celsius with a fan.
Gas marks, Fahrenheit and fan ovens all need a different adjustment. The risk: burnt outside, raw middle.
What you need
The dial setting for your oven, fan included.
Related calculators
| Calculator | Typical use |
|---|---|
| Oven Temperature Converter | Gas mark, °C, °F and fan ovens |