Glass bowl filled with vegetables in Whirlpool® microwave

Can you microwave glass?

Yes, you can microwave most glass items as long as they are labeled “microwave safe”. Kitchen wares, such as glass items, that have the “microwave safe” label are made of  materials that are safe to be used in the microwave. Knowing what items you can safely put in the microwave is one way you can better understand how to use your appliance. 

Putting items in your microwave that aren’t microwave safe can not only negatively impact your items, but also your microwave. To streamline meal time with your family and better care for both your dishware and your appliance, follow this guide to understand what types of glassware you can use in the microwave.

Whirlpool® microwave on a kitchen counter Whirlpool® microwave on a kitchen counter

Will glass break if you microwave it?

Glass labeled as “microwave safe” shouldn’t break if used as directed. Whether or not glass will break if microwaved depends on if it has been manufactured to withstand the electromagnetic waves a microwave emits.

Can you reheat food in glass?

You can reheat food in glass containers so long as the glassware is microwave safe. Reheating food in glass can be a better option than other alternatives, such as plastic and styrofoam. Styrofoam or plastic containers can lose shape when they get too hot which may cause their contents to spill or overflow.

Person opening a Whirlpool® microwave Person opening a Whirlpool® microwave

How long can you microwave glass for?

In general, you should refrain from microwaving glassware for longer than three minutes. It’s important to remember that this varies depending on the type of cookware you’re microwaving, specifically whether or not it’s labeled as safe to use in the microwave. 

Knowing how to use your microwave can help make dinnertime run smoothly.

How to determine if glass is microwave safe

To determine if glass is microwave safe you should inspect your glassware, read the instructions on your item and microwave as directed. All glass products are different, and microwaving your glassware other than directed by the product or packaging could be harmful to your item and your microwave.

Follow these steps to help determine whether it’s safe to use your glass items in the microwave or not.

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Step 1: Inspect your glassware

To determine if your glassware is microwave safe, first inspect your product. Glass that is safe to use in the microwave will either have a “microwave safe” statement on it or a symbol of a microwave with wavy lines. This is usually found on the bottom of your glassware.

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Step 2: Read instructions for your glassware

If you can’t find anything that says your glassware is microwave safe on the item itself, read the packaging it came in for instructions. Also consult your microwave’s user manual to help you further determine what is safe to use in the microwave.

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Step 3: Microwave glassware as instructed

Once you’ve read your glassware, the packaging or consulted your microwave’s user manual, microwave your glassware as instructed. If there’s no information stating you can put your item in the microwave, you should refrain from using it in the microwave at all. Although glass will likely not melt in the microwave, it could crack or break. To keep your glass item and microwave safe, only microwave items as instructed.

Shop Whirlpool® microwaves

Whether you’re looking for a low profile over-the-range microwave or additional features to streamline mealtime, Whirlpool® microwaves can fit your kitchen needs. From features like Scan to Cook technology to Tap-to-Open doors on select models, Whirlpool brand microwaves help you spend more time at the table with your family.

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