Temperature converter (Celsius, Fahrenheit, Kelvin)
Convert temperatures between Fahrenheit, Celsius, Kelvin and Rankine instantly, with the formula and a reference table.
Temperature converter
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Temperature converter (Celsius, Fahrenheit, Kelvin): what it is for
Type a temperature in any scale and instantly see the others: Celsius, Fahrenheit, Kelvin and Rankine. The tool shows the conversion formula in the FAQ and a table of everyday temperatures, such as fever, boiling water and oven heat.
Useful for recipes, travel, weather forecasts from other countries and physics exercises.
How to use
- Type the temperature in any field.
- See the other scales instantly.
- Check the reference table.
When to use it
- Converting oven temperatures in recipes.
- Understanding weather forecasts abroad.
- Solving physics and chemistry exercises.
Frequently asked questions
How do I convert Fahrenheit to Celsius?
Subtract 32 and multiply by 5/9: °C = (°F − 32) × 5 ÷ 9. For example, 100 °F = 37.8 °C.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32: °F = °C × 9 ÷ 5 + 32. For example, 30 °C = 86 °F.
What about Kelvin?
Add 273.15 to the Celsius value. Absolute zero is 0 K, which equals −273.15 °C or −459.67 °F.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.