Which temperature units can I convert?
Celsius (°C), Fahrenheit (°F), and Kelvin (K). Choose the unit you are entering; the other two conversions appear as result tiles.
Interactive calculator loads when JavaScript is enabled. All calculations stay on your device.
Usage
- Convert weather forecasts between Celsius and Fahrenheit while travelling.
- Check oven or cooking temperatures in the scale your recipe uses.
- Translate science or lab readings into Kelvin or Celsius.
- Quick dual-unit checks for school or workplace assignments.
- Swap from either result tile to make that conversion your new starting point.
Knowledge
Celsius and Fahrenheit are everyday temperature scales. Kelvin starts at absolute zero and is preferred in science.
Formulas
- °F from °C: (°C × 9/5) + 32
- °C from °F: (°F − 32) × 5/9
- K from °C: °C + 273.15
Water freezes at 0 °C / 32 °F / 273.15 K and boils (at standard pressure) at 100 °C / 212 °F / 373.15 K.
FAQs
How do Celsius and Fahrenheit relate?
°F = (°C × 9/5) + 32, and °C = (°F − 32) × 5/9. This converter applies those formulas for you.
What is Kelvin used for?
Kelvin is the SI absolute temperature scale used in science. 0 K is absolute zero; water freezes at 273.15 K (0 °C).
Can I swap from a result?
Yes. Tap Swap on either result tile to move that value and unit into the input and recalculate the other conversions.
Is my data stored or sent anywhere?
No. Everything runs in your browser. Nothing you type is uploaded or saved on a server.