Oven Temperatures: Celsius, Fahrenheit, and Recipe Settings

Read the unit printed in the recipe and on your oven before choosing a setting. The number alone cannot reliably identify Celsius or Fahrenheit. The cooking measurements hub links oven conversions alongside ingredient, volume, and mass tools.

Exact conversion

NIST’s temperature guidance gives the relationship between the two scales:

• °F = °C × 1.8 + 32
• °C = (°F − 32) ÷ 1.8

Calculated examples: 180°C is exactly 356°F; 350°F is approximately 176.67°C; 375°F is approximately 190.56°C. Use the Celsius-to-Fahrenheit converter or Fahrenheit-to-Celsius converter for another amount.

The oven temperature chart shows calculated Celsius/Fahrenheit pairs. Its values come from the formula, rather than an undocumented gas-mark or fan-oven table.

Rounded recipe settings

A recipe may list both 180°C and 350°F as alternate settings. Those numbers are not an exact unit equivalence. If the author explicitly supplies an alternate setting, use that recipe instruction. Otherwise calculate the conversion and choose an available setting on the appliance.

Keep the calculation, display rounding, and dial choice separate. Rounding 176.666…°C to 176.67°C describes arithmetic precision; selecting a nearby available dial position is a practical decision. This guide does not promise that a particular temperature difference is immaterial for every recipe or oven.

Convection depends on the mode and appliance

GE’s convection-baking guidance gives a general reduction of 25°F for that use. As a temperature difference, 25°F is about 13.89°C; 20°C is 36°F. The two reductions are not equivalent.

Some GE models convert convection settings automatically. Consult the selected mode, recipe instructions, and your appliance manual before reducing a setting. Do not apply a second reduction to an automatically converted temperature.

The NSW Health cookbook, page 39 likewise advises checking instructions for fan-forced ovens. There is no universal fan-temperature column here.

If the recipe supplies a gas mark

A verified primary mapping for the full gas-mark scale is not available in this release. Use your appliance manual or the recipe author’s explicit Celsius/Fahrenheit alternative. Exact temperature arithmetic alone cannot verify a gas-mark mapping, so the existing chart URL now offers the narrower Celsius/Fahrenheit reference.

Before you preheat

1. Identify the recipe’s unit and oven mode.
2. Look for an explicitly supplied alternate setting.
3. If one is absent, calculate the temperature in your oven’s scale.
4. Check available dial settings and any automatic conversion.
5. Follow the recipe and appliance instructions for mode and timing.

For ingredient quantities, return to cooking measurements; an oven conversion does not determine an ingredient substitution or cup weight.