Finger touching digital display on oven

How long does it take to preheat an oven?

Preheating an oven generally takes about 12-15 minutes to reach 350ºF, although the type and size of your oven may cause this time to vary. Preheating your oven is essential to getting great cooking results. Food needs continuous heat to cook evenly, and preheating your oven can help prevent your meals from being over or undercooked.

Can I preheat the oven for five minutes?

You can preheat the oven for five minutes when using the broil setting on many full-sized ovens. To reach higher temperatures, you may have to allow the oven more time to warm up. As a general rule, it usually takes about 12-15 minutes to preheat an oven to 350ºF, with a five minute increase for every 100 degrees over 350ºF. If you find your oven is taking longer to heat up, it may need to be calibrated before you use it. Model specifics may vary, so check your oven’s manual for exact instructions and preheat times.

  • How long does it take to preheat an oven to 250-300 degrees?
    • Preheating an oven to lower temperatures will take the least amount of time and should reach 250-300ºF in about 8-10 minutes.
  • How long does it take to preheat an oven to 300-350 degrees?
    • Depending on the type of oven you own, it may take 10-15 minutes to reach temperatures of 300-350ºF.
  • How long does it take to preheat an oven to 350-400 degrees?
    • To reach higher temperatures of 350-400ºF, it will typically take about 15-20 minutes to preheat. 
  • How long does it take to preheat an oven to 400-450+ degrees?
    • The highest temperatures of 400-450ºF take the longest to preheat and can do so in about 20-25 minutes.
Needed A Whirlpool® Oven set in a kitchen

How to preheat an oven step by step

Correctly preheating your oven will help ensure that your food is cooked thoroughly, and this can be done in just a few simple steps.

A hand scrubbing the oven

Step 1. Prepare your oven

Remove any racks from the oven that will not be used and make sure the oven is clean before placing food inside. Keep the oven door closed until it is finished preheating to help reduce heating time.

The temperature is being set to 425 degrees

Step 2. Set the oven temperature

Consult your recipe’s instructions to determine the proper temperature setting. Different types of ovens may require specific settings, so refer to your appliance’s owner’s manual for guidance.

Image of the inside of the oven heating

Step 3. Allow the oven to preheat

Select the “Start” button on the preheat cycle (if applicable for your model). Allow the oven to fully reach the desired temperature before opening the door and placing food into the unit.

How do you know when the oven is preheated?

Different types of ovens will have different indicators that preheating is complete. Ovens with a digital display show the temperature on the screen. Many models will be accompanied by a tone when the desired temperature is reached and food is ready to be placed into the oven.

Needed A pot sits on top of a Whirlpool® Oven

Why does an oven take so long to preheat?

If your oven is taking a longer time than normal to preheat, there could be several factors responsible, including:

  • Unused racks have been left in the oven. Remove any unused racks before preheating. 

  • The door has been open for an extended time before putting food into the oven. Keep the door closed until preheating is complete.

  • The oven is installed on a lower voltage of 208V and may take longer to preheat than one installed on 240V. Once the oven temperature is reached, the oven’s performance should not be affected.


  • The room temperature of your kitchen is low.
  • If your oven is still having issues preheating, review our guide on how to troubleshoot an oven that’s not heating up. Or, if your oven is overheating, learn what could be causing the problem and how to fix it.


Do new ovens take longer to preheat?

Newer oven models will typically have a larger capacity than older models and may take longer to preheat fully. In some new ovens, you may notice smoke coming out of oven while preheating the first use. You can consult your product’s owner’s manual for instructions specific to your model and adjust the time as needed.

Image of an open gas oven

How long do gas ovens take to preheat?

Gas ovens use gas as fuel to power a heating element inside of the oven cavity. They will typically preheat faster than conventional electric ovens but may fluctuate in temperature.

Image of an open electric oven

How long do electric ovens take to preheat?

Electric ovens work by sending an electrical current through a heating element to heat it. Though performance is not affected, they typically take a longer time to preheat, which should be considered when preparing your meal.

Does a convection oven preheat faster?

Convection ovens have a fan in the back of the unit that circulates hot air around the oven cavity. They can preheat faster than traditional gas and electric ovens, so you’ll want to be sure to adjust the cook time as needed.

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