What this calculator does
Fahrenheit to Celsius is one of the most-searched conversions online, since recipes, weather reports and oven dials switch between the two scales depending on the country. The two scales share a fixed relationship: 0°C sits at 32°F, and each Celsius degree spans 1.8 Fahrenheit degrees.
This calculator converts Fahrenheit to Celsius or Celsius to Fahrenheit, both directions, with the equivalent in Kelvin shown alongside. It defaults to 350°F, one of the most common oven temperatures in recipes written in Fahrenheit.
The formula
To convert Fahrenheit to Celsius, subtract 32 then multiply by 5/9. To convert Celsius to Fahrenheit, multiply by 9/5 then add 32. The 32-degree offset accounts for the different zero points of the two scales (0°C is the freezing point of water, but 32°F is), and the 5/9 or 9/5 factor accounts for the different degree sizes.
| Term | Meaning |
|---|---|
| Celsius (°C) | The metric temperature scale, where water freezes at 0°C and boils at 100°C. |
| Fahrenheit (°F) | The scale still used for everyday temperatures and oven dials in the US, where water freezes at 32°F and boils at 212°F. |
| Kelvin (K) | The scientific absolute temperature scale, equal to Celsius plus 273.15, with 0 K as absolute zero. |
The inputs explained
| Field | What to enter |
|---|---|
| Value | The value to convert, either a temperature in Fahrenheit or in Celsius, depending on the direction chosen below. Defaults to 350, a common oven temperature in Fahrenheit. |
| Convert | Choose whether to convert Fahrenheit to Celsius, or Celsius to Fahrenheit. |
When to use it
Converting a recipe's oven temperature
A recipe written for a Fahrenheit oven, such as "bake at 350°F", converts to Celsius for an oven dial marked only in Celsius, or the other way around.
Reading a weather forecast from another country
A temperature forecast given in Fahrenheit converts to Celsius for a more familiar sense of how hot or cold a day will be, and vice versa.
Checking a body or fever temperature reading
A temperature from a thermometer that displays in one scale converts to the other to compare against a familiar reference, such as a normal body temperature of 37°C or 98.6°F.
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
Fahrenheit to Celsius, for common oven and weather temperatures
A range of Fahrenheit temperatures, including common oven settings, each converted to Celsius.
| Fahrenheit | Celsius | Kelvin |
|---|---|---|
| 32 | 0.0 °C | 273.15 K |
| 68 | 20.0 °C | 293.15 K |
| 98.6 | 37.0 °C | 310.15 K |
| 212 | 100.0 °C | 373.15 K |
| 325 | 162.8 °C | 435.93 K |
| 350 | 176.7 °C | 449.82 K |
| 400 | 204.4 °C | 477.59 K |
Celsius to Fahrenheit, for common reference points
A range of Celsius temperatures, each converted to Fahrenheit.
| Celsius | Fahrenheit | Kelvin |
|---|---|---|
| 0 | 32.0 °F | 273.15 K |
| 20 | 68.0 °F | 293.15 K |
| 37 | 98.6 °F | 310.15 K |
| 100 | 212.0 °F | 373.15 K |
| 150 | 302.0 °F | 423.15 K |
| 180 | 356.0 °F | 453.15 K |
| 200 | 392.0 °F | 473.15 K |
Questions
What is 350°F in Celsius?
176.7°C, from (350 − 32) × 5/9. Many recipes and oven dials round this to 175°C or 180°C.
How do I convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit value, then multiply the result by 5/9. For example, 100°F: (100 − 32) × 5/9 = 37.8°C.
What temperature is the same in both Celsius and Fahrenheit?
-40 degrees. At -40°C the Fahrenheit reading is also -40°F, the one point where the two scales cross.
Is Kelvin the same size as Celsius?
Yes. A Kelvin and a Celsius degree are exactly the same size; Kelvin just starts counting from absolute zero (-273.15°C) instead of the freezing point of water. So converting Celsius to Kelvin is just adding 273.15.
For the full temperature ladder including Rankine, see the temperature converter. For cooking-specific unit conversions, see the cooking converter.