🌡️ Temperature & ovens
175 °F to °C
175 °F is 79.4 °C. Subtract 32, multiply by 5 and divide by 9. On a fan oven, set about 59 °C.
The short answer
175 °F = 79.4 °C
Fan oven: 59 °C. This is a very low oven.
About 175 °F in °C
175 °F is 79.4 °C. The formula is (F − 32) × 5/9: 175 − 32 = 143, then 143 × 5 ÷ 9 = 79.4. Celsius and Fahrenheit cross at − 40, not at zero, which is why the subtraction comes first.
Fan ovens run about 20 °C cooler than the temperature written on a conventional recipe, so a 175 °F instruction becomes 59 °C on a fan setting. If your oven only has round numbers, choose the nearest (80 °C) and adjust the time by about 10%.
A 175 °F oven is in the very low band — roughly gas mark ¼. That matters more than the exact degree: a 10 °C error changes a sponge by a couple of minutes, while the wrong band changes whether the outside browns before the middle sets.
Gas marks are a third scale in the same kitchen: 175 °F, 79 °C and a gas mark all describe one oven heat, and British recipes still print two of the three side by side. Converting 175 °F to 79 °C and then to a fan setting of 59 °C keeps the recipe's intent even when your oven runs a little hot.
Recipe apps often write the question as 175 f to c rather than with degree symbols, and the answer is the same: 79.4 c. Rounded to 79 c, that is what most oven dials can actually be set to.
How the calculation works
- (175 °F − 32) × 5/9 = 79.4 °C
- Fan oven: 79.4 − 20 = 59.4 °C
- Reverse: (79.4 °C × 9/5) + 32 = 175 °F
Reference values
| Fahrenheit | Celsius | Fan oven |
|---|---|---|
| 125 °F | 52 °C | 32 °C fan |
| 150 °F | 66 °C | 46 °C fan |
| 175 °F | 79 °C | 59 °C fan |
| 200 °F | 93 °C | 73 °C fan |
| 225 °F | 107 °C | 87 °C fan |