Celsius to Fahrenheit Converter

How to convert Celsius to Fahrenheit

°F = °C × 9/5 + 32   °C = (°F − 32) × 5/9

Multiply by 9/5 (which is 1.8), then add 32. To go the other way, subtract 32 first, then multiply by 5/9. The order matters: the 32 is an offset between the two zero points, and it has to be removed before scaling.

Example: 25 °C × 1.8 = 45, plus 32 = 77 °F. And 350 °F in an American recipe is (350 − 32) × 5/9 = 318 × 5/9 = 176.7 °C, usually set as 175 or 180 °C.

Celsius to Fahrenheit table

Oven temperatures

Recipes usually round oven settings to the nearest 5 or 10 degrees. For a fan (convection) oven, many recipes suggest setting about 20 °C (roughly 25 °F) lower; follow your recipe or oven manual.

Body temperature

37 °C is 98.6 °F, and 38 °C is 100.4 °F. Normal body temperature varies from person to person, by time of day and by where it is measured, so these are reference values, not medical thresholds. Ask a health professional how to interpret a reading.

Common questions

Is there a mental shortcut?

Double the Celsius value and add 30. It is close for weather temperatures (10 °C → 50 °F, exact 50 °F; 30 °C → 90 °F, exact 86 °F) but drifts further away as temperatures rise.

At what temperature are Celsius and Fahrenheit the same?

At −40: −40 °C is exactly −40 °F.

Can I convert a temperature change with this tool?

Not directly. A change of 1 °C equals a change of 1.8 °F, with no 32 added. If the weather is 5 °C warmer than yesterday, it is 9 °F warmer.

For kelvin, use the temperature converter.