EN

Celsius to Fahrenheit

Convert temperatures from Celsius to Fahrenheit. Multiply by 9/5 and add 32.

Free and private. Everything runs in your browser, nothing is uploaded.

How it works

  1. Enter the valueThe units are already set. Type the number.
  2. Read the resultThe converted value appears at once.
  3. Use the tableThe reference table below lists common values.

The formula

Water freezes at 0 °C, which is 32 °F, and boils at 100 °C, which is 212 °F. The 100 degree span in Celsius equals 180 degrees in Fahrenheit, so each Celsius degree is 1.8 Fahrenheit degrees: °F = °C × 1.8 + 32. A pleasant day of 20 °C is 68 °F, normal body temperature of 37 °C is 98.6 °F, and a hot oven at 200 °C is 392 °F.

The two scales meet at minus 40, where -40 °C equals -40 °F. The reference table below the converter covers weather, fever and kitchen temperatures.

Quick estimate

For weather, double the Celsius value and add 30: 15 °C gives about 60 °F, close to the exact 59 °F. For cooking, use the exact value, since oven settings matter.

Frequently asked questions

Is 37 °C a fever?

37 °C (98.6 °F) is normal body temperature. A fever usually starts around 38 °C (100.4 °F).

How accurate are the conversions?

They use the exact international definitions and show up to 12 significant digits.

Why does my 1 TB drive show 931 GB?

Drive makers count 1 TB as 10^12 bytes, operating systems count in binary units. 10^12 bytes are 931 GiB.

Can I type a comma as decimal separator?

Yes. Both 1,5 and 1.5 are understood.

Does it work offline?

Yes. After the first visit the converter also works without an internet connection.