Oven Temperature Conversion Chart: Fahrenheit, Celsius and Gas Mark

What is the quickest oven temperature conversion?

For most home-baking settings, use the following values. Celsius figures are rounded to the nearest 5°C; Gas Mark values are conventional labels, not exact mathematical equivalents. The chart is intended for ordinary baking and roasting rather than broiling or specialized high-heat methods.

For an exact conversion, Celsius equals five-ninths of the Fahrenheit temperature minus 32. Reverse it by multiplying Celsius by nine-fifths and adding 32. These equations produce decimals, while oven dials normally select rounded settings, so the reference values below are more useful at the controls.

The chart is intended for ordinary baking and roasting rather than broiling or specialized high-heat methods. Gas Mark is a UK and Irish scale found on many ovens and recipes, and it is not the same as a fan-assisted setting.

Which Fahrenheit and Celsius values are used most often?

The central range covers the settings most likely to appear in everyday recipes. A familiar 350°F recipe corresponds to 175°C in this rounded chart, even though the exact conversion is approximately 176.7°C. Home ovens generally cannot select tenths of a degree, and recipes conventionally round the target.

Gas Mark labels remain useful when a recipe comes from a British or Irish source. Half-step labels such as 2½ and 4½ are also encountered; treat them as practical intermediate settings, not as a separate temperature scale. If a recipe gives only a Gas Mark, the table supplies the corresponding rounded setting.

How do I convert a recipe temperature myself?

The direct conversion is °C = (°F − 32) × 5/9. For example, 350°F converts to approximately 176.7°C. Because oven dials and recipes normally use rounded values, select 175°C for the standard baking setting rather than trying to enter a fractional number.

To convert Celsius to Fahrenheit, use °F = (°C × 9/5) + 32. A recipe at 180°C converts to 356°F. On an oven with 25°F increments, 350°F is the closest practical setting; on a more finely graduated dial, 355°F may be available.

Gas Mark has no single simple arithmetic formula that is convenient for every value. Use the reference table for ordinary settings. When converting a recipe, retain the same baking time and check the recipe’s stated visual or texture cues rather than changing several variables at once.

• Subtract 32 from Fahrenheit, then multiply by 5/9 to obtain Celsius.
• Multiply Celsius by 9/5, then add 32 to obtain Fahrenheit.
• Round to the nearest setting your oven can select.
• Use the table for Gas Mark instead of estimating between unrelated scales.

How should I adjust for a fan-assisted oven?

A fan-assisted oven circulates hot air more actively than a conventional oven. Many manufacturers and recipe authors therefore recommend a lower setting, commonly about 20°C (35°F) below the conventional figure. This is a starting adjustment, not a universal correction for every oven or recipe.

The chart’s Celsius and Gas Mark columns are conventional equivalents, not fan-adjusted values. If a recipe gives 200°C conventional, a practical fan setting is often 180°C. Follow a specific recipe’s fan instruction when one is provided, because item size, batter type and oven design can affect the appropriate choice.

Do not apply both a fan reduction and an unrelated conversion correction. Convert the stated scale first, then make one adjustment for the oven mode. Keep the cooking time under review and rely on the recipe’s doneness cues, since a lower starting temperature does not guarantee the same timing in every appliance.

Which exact setting should I choose after conversion?

Conversion produces a number; an oven control offers selected positions. If the result falls between two markings, choose the nearest available setting. For example, 180°C is 356°F, so a dial marked in 25°F steps is normally set to 350°F rather than 375°F.

Small differences of 5°C or 25°F are usually less important than oven mode, rack position and the condition of the baking tin. Avoid repeatedly compensating for a perceived difference by changing the temperature again. Use the recipe’s scale as the primary reference and convert only once.

For a recipe that specifies a range, select a value inside that range and keep the same unit throughout. A range such as 180–190°C should not be converted into a wider range merely because the arithmetic produces decimals. The purpose of conversion is to reproduce the intended heat level as closely as the appliance allows.

• Convert the recipe’s stated temperature to the unit used by your oven.
• Round only after completing the calculation.
• Select the nearest available dial or digital setting.
• Do not add a second correction unless the recipe or manufacturer specifically calls for one.

What should I know about Gas Mark recipes?

Gas Mark is a numbered scale associated with gas ovens, but the labels are also printed on some electric models. The table gives the commonly used rounded Celsius and Fahrenheit equivalents. A Gas Mark of 4, for example, is normally treated as 180°C or 350°F in everyday recipe conversion.

Older recipes may use descriptive terms such as moderate or slow instead of a number. Those terms are less precise than a stated temperature, so use the closest standard value in the table and pay attention to the recipe’s timing and doneness description. When a modern edition supplies a numerical temperature, prefer that value.

Gas Mark values above 9 are not universal across every oven, and some appliances stop at a lower maximum. Do not extrapolate a missing high setting by assuming that the next number has the same spacing. For unusually high temperatures, use a recipe written for your oven’s scale or consult its manual.

Where does this oven temperature conversion chart not apply?

The table is a reference for conventional oven settings, not a complete cooking guide. Broiler, grill and pizza functions may operate differently from a steady baking mode, and a manufacturer’s maximum setting can vary. A recipe that calls for one of those functions should be followed in the unit and mode it specifies.

Surface browning, rise and moisture loss depend on more than the displayed number. Tin material, rack position, oven load and whether the oven is fan-assisted can change the result. Use the converted temperature as the starting point, then follow the recipe’s timing and visual or texture cues.

If a recipe’s result is consistently undercooked or overbrowned, record the setting, mode and rack position before changing the temperature. That information is more useful than repeatedly converting the same number. For persistent uncertainty about an appliance’s behavior, consult the oven manual or a qualified service technician.

• Use the table for Fahrenheit, Celsius and Gas Mark oven settings.
• Check whether the recipe means conventional or fan-assisted heat.
• Do not treat the table as a substitute for a recipe’s cooking time or doneness cues.
• Consult the appliance manual for specialized functions or unusually high settings.