100°C oven temperature
100°C = 80°C fan = gas mark 1/4 = 212°F
Very cool oven — meringues, slow-drying fruit, keeping food warm.
Setting 100°C on a gas oven
100°C is not a gas mark. The nearest is mark 1/4 at 110°C, so on a gas oven you would set mark 1/4 and cook 10°C hotter than the recipe asks — usually worth a few minutes off the time.
100°C in every setting
| Conventional oven | 100°C |
| Fan / convection oven | 80°C |
| Gas mark | 1/4 |
| Fahrenheit | 212°F (exactly 212.0°F) |
| Fahrenheit, fan | 176°F |
Frequently asked questions
What is 100°C in a fan oven?
80°C. Subtract 20°C from a conventional-oven temperature to get the fan equivalent.
Can a gas oven be set to 100°C?
100°C is not a gas mark. The nearest is mark 1/4 at 110°C, so on a gas oven you would set mark 1/4 and cook 10°C hotter than the recipe asks — usually worth a few minutes off the time.
What gas mark is 100°C?
Gas mark 1/4, which is 225°F and conventionally written as 110°C.
What is 100°C in Fahrenheit?
212°F exactly. Recipes usually write it as 225°F, the gas mark step it sits closest to.
The settings either side
| Gas mark | Fahrenheit | Celsius | Fan / convection | |
|---|---|---|---|---|
| 1/4 | 225°F | 110°C | 90°C fan | Very cool |
| 1/2 | 250°F | 130°C | 110°C fan | Very cool |
The full chart, and why the three scales disagree →
All oven temperatures · 100°C to °F precisely · Cooking measurements