Convection Oven Conversion Calculator

You can use this simple convection oven conversion calculator to convert conventional oven temperatures and times to convection oven temperatures and times.

Instructions: Input the temperature and cooking time for the conventional oven in the fields below and click on the "Convert" button to generate the convection oven temperature and time.

Convection Oven Calculator


hrs min

Convection Times and Temps:
Method 1
Convection Time:
Convection Temperature:
Method 2
Convection Time:
Convection Temperature:
Method 3
Convection Time:
Convection Temperature:

What Is a Convection Oven?

Convection ovens are electric or gas appliances that incorporate fans that circulate hot air within the oven as a means of increasing the speed and evenness with which food cooks. Having the ability to cook food evenly can be particularly advantageous when preparing baked goods. In addition, because the air circulates throughout the oven, the full oven space can be used more efficiently.

Convection Oven Conversion

The majority of recipes that are available were designed for use with conventional ovens. As such, if you are preparing the dishes in a convection oven, there is a requirement to reduce the temperature or time detailed in the recipe; otherwise, the dish may be overcooked. There are three simple methods to convert conventional oven cooking times and temperatures into convection oven times and temperatures. These are outlined below.

Method 1: Reduce Cooking Temperature Only

If you are cooking cakes, breads, or other desserts, the typical approach is to keep the cooking time the same but reduce the oven temperature by 25°F. You should only do this if you can stop the fan from operating. Fan-based cooking is not advisable for these types of foods. For instance, if you are using a convection oven and a recipe instructs you to cook a dough at 350°F for 1 hour, you should cook it at 325°F for 1 hour.

Method 2: Reduce Cooking Time Only

If you are roasting meats, the typical approach is to reduce the cooking time by 25% while keeping the cooking temperature the same. For instance, if you are using a convection oven and a recipe calls for you to cook a joint of beef at 300°F for two hours (120 minutes), perform the following calculation: 120 − (0.25) × 120 = 90 minutes, which is 1 hour and 30 minutes.

Method 3: Reduce Both Cooking Time and Temperature

In some cases, it may be suitable to reduce both the time and temperature. If you wish to do this, it is generally effective to reduce the temperature by 15°-20° and the time by 10-15%. This approach is often used when preparing potatoes, casseroles, custards, and other baked goods.

Convection Cooking Tips

  • Read the user manual thoroughly for detailed recommendations on the intricacies of your oven.
  • Ensure that you put the oven racks in place before operating the oven because they will get hot very quickly.
  • Check the food around 5-10 minutes in advance of the full cooking time. This will reduce the risk of burning dishes.
  • If you are cooking foods that cook quite quickly, such as cookies, the adjustments required will be smaller than if you are cooking items that take a longer time to prepare, such as meat joints.

You may also be interested in our Cooking Measurement Conversion Calculator or Meat Cooking Time Calculator

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