Fahrenheit to Celsius
275°F to Celsius
275°F is 135°C (Gas Mark 1). On a UK oven, set 140°C (or 120°C fan).
275 degrees Fahrenheit equals
135°C
Exactly 135°C · UK oven setting: 140°C
What 275°F is used for
Cool oven
275°F is Gas Mark 1. The exact conversion is 135°C, but UK charts usually pair Gas Mark 1 with 140°C.
Typical uses at this heat: slow roasts, pavlova, rich fruit cake.
Oven dials can be out by a surprising amount. Here’s how to check yours with an oven thermometer.
How to convert 275°F to °C
Subtract 32, then multiply by 5 and divide by 9:
243 × 5 ÷ 9 = 135°C
UK oven dials go up in 10°C steps, so recipes round this to 140°C.
275°F in different ovens
| Oven type | Setting |
|---|---|
| Conventional oven | 275°F / 140°C |
| US convection oven | 250°F |
| UK fan oven | 120°C |
| Gas oven | Gas Mark 1 |
| Air fryer | 250°F / 120°C |
Convert another temperature
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Nearby temperatures
| Fahrenheit | Celsius (exact) | Gas Mark | Convection |
|---|---|---|---|
| 250°F | 121.1°C | Gas Mark ½ | 225°F |
| 275°F | 135°C | Gas Mark 1 | 250°F |
| 300°F | 148.9°C | Gas Mark 2 | 275°F |
| 325°F | 162.8°C | Gas Mark 3 | 300°F |
| 350°F | 176.7°C | Gas Mark 4 | 325°F |
Common questions
What is 275°F in Celsius?
275°F is 135°C. UK recipes and oven dials round it to 140°C.
What Gas Mark is 275°F?
275°F is Gas Mark 1.
What is 275°F in a fan or convection oven?
In a US convection oven, use 250°F (25°F lower). In a UK fan oven, use 120°C. Many newer US ovens subtract the 25°F automatically in convection mode, so check your manual before you reduce it twice.
Is 275°F hot?
275°F (135°C) counts as a cool oven. Typical uses: slow roasts, pavlova, rich fruit cake.
More Fahrenheit conversions
Going the other way? See 180°C to °F and the other Celsius conversions.