How do you convert Celsius to Fahrenheit?

Multiply the Celsius temperature by 9/5, then add 32.

Worked example

For 20°C: 20 × 1.8 + 32 = 68°F. To go back, subtract 32 and multiply by 5/9.

Try it with your own numbers

Use the Temperature Converter to check another example. Read the input labels carefully and keep units consistent.

Before you use the answer

Choose the correct starting quantity and keep full precision until the final step. An arithmetic result describes the numbers entered; the usefulness of the result depends on accurate measurements and the assumptions in the calculation.