Oven converter
Temperature Adjuster
Convert oven temperatures between Fahrenheit, Celsius, UK gas marks, and air fryer equivalents. Toggle fan-forced (convection) to auto-drop the temp by 20°C / 25°F. Useful when a recipe was written for one country's oven but you have another.
Set the temperature
Quick presets
Equivalents
Celsius
180°
°C
Fahrenheit
356°
°F
Gas Mark
4
UK
Air fryer equivalent
331°F
Drop temp by 25°F from conventional. Also reduce cook time by 20–25% and check 5 min early.
How fan-forced (convection) adjusts
Fan-forced ovens circulate hot air. Food cooks faster and browns more evenly than in a conventional oven set to the same temperature. The standard rule: drop the temperature by 20°C (about 25°F) when using fan-forced. So a 180°C conventional recipe runs at 160°C fan-forced.
Air fryers are essentially small convection ovens. Most recipes adapted from oven to air fryer follow the same rule: drop the temperature by 25°F and the time by 20–25%. Use the air fryer column in the result for a starting point, then check 5 minutes early.
Note on gas marks
UK gas marks are integers from 1 to 9 (plus quarter and half settings). Each step is roughly 25°F. They're common in British and Irish cookbooks. The conversions below use the standard Mary Berry / BBC Good Food reference.
Common oven temperature table
| Description | °F | °C | Gas Mark | Fan °C |
|---|---|---|---|---|
| Very cool | 225 | 110 | ¼ | 90 |
| Cool | 275 | 140 | 1 | 120 |
| Warm | 300 | 150 | 2 | 130 |
| Moderately slow | 325 | 165 | 3 | 145 |
| Moderate | 350 | 180 | 4 | 160 |
| Moderately hot | 375 | 190 | 5 | 170 |
| Hot | 400 | 200 | 6 | 180 |
| Very hot | 425 | 220 | 7 | 200 |
| Hotter | 450 | 230 | 8 | 210 |
| Hottest | 475 | 245 | 9 | 225 |
Sources: BBC Good Food, Mary Berry's reference table, USDA. Values rounded to standard oven dial increments.