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400°F to Celsius

400°F is 204°C, which a Celsius oven dial calls 200°C (180°C fan, gas mark 6). To convert, subtract 32 and multiply by 5/9.

400°F is

204 °C

Oven dial
200 °C
Fan oven
180 °C
Gas mark
6

Moderately Hot oven. Dials step in 10 °C and 25 °F, so the setting rounds.

Oven temperature conversion chart

The settings on an oven dial, with the fan setting and gas mark. Dials step in 10 °C and 25 °F, so they round: 180°C is exactly 356°F, and a recipe’s 350°F is set as 180°C.

FahrenheitCelsiusFanGas mark
225°FVery Low110°C90°C¼
250°FVery Low120°C100°C½
275°FLow140°C120°C1
300°FLow150°C130°C2
325°FModerately Low160°C140°C3
350°FModerate180°C160°C4
375°FModerate190°C170°C5
400°FModerately Hot200°C180°C6
425°FHot220°C200°C7
450°FHot230°C210°C8
475°FVery Hot240°C220°C9
500°FVery Hot260°C240°C10

Other oven settings

300°F to Celsius325°F to Celsius350°F to Celsius375°F to Celsius425°F to Celsius450°F to Celsius475°F to Celsius

How to convert °F to °C

The formula is °C = (°F − 32) × 5/9, or roughly (°F − 30) ÷ 2. For example, (400 − 32) × 5/9 = 368 × 5/9 = 204°C.

For an oven, use the dial setting rather than the exact figure: ovens are set in steps and swing by more than a few degrees. A fan (convection) oven runs hotter, so set it 20 °C lower.

Questions

What is 400°F in Celsius?

400°F is 204°C. On a Celsius oven, set 200°C, or 180°C in a fan oven; gas mark 6.

What is 400°F in a fan oven?

A fan (convection) oven cooks hotter, so set it 20 °C lower: 180°C.

What gas mark is 400°F?

Gas mark 6, a moderately hot oven.

Why does the oven dial say 200°C, not 204°C?

Oven dials step in 25 °F and 10 °C, so recipes round to the nearest setting. An oven swings by more than the difference, so set the dial and check doneness the way the recipe says.