are glass coffee mugs microwave safe

Are Glass Coffee Mugs Microwave Safe?

Are you looking for a way to save a few minutes in the morning making your coffee? Does a glass mug sound like the perfect container for your hot beverage? You may wonder if it is safe to put a glass mug in the microwave but the answer isn’t always so clear.

The Argument Against Microwaveable Mugs

Most people would advise against putting a personal glass mug in the microwave due to the potential for a hazard. Glass is vulnerable to temperature changes and might shatter if suddenly heated. It is possible for your microwave to cause a temperature shock to the glass, although that isn’t very likely.

Safety Measures to Take

There are ways to reduce the risk of injury or property damage if you decide to put a glass mug in the microwave:

  • Only use a microwave-safe glass mug.
  • Check its design. Handles and ridges can create extra heat and possibly shatter the glass.
  • Be mindful of the material the handle is made of. It should also be made of a heat-resistant material.
  • Make sure the glass is thick and heat-resistant. Thin or fragile glasses should not go in the microwave.
  • Never put your mug in the microwave empty. Heat builds up quickly and can cause the mug to shatter.
  • Do not put your mug in for more than a minute at a time.


Whether or not it is safe to microwave a glass mug will depend on its construction and design. If you take the proper safety precautions and follow the tips above, then you should be able to microwave a glass mug without any issues. Of course, if you don’t feel comfortable putting a glass mug in the microwave, even with all of the safety measures, then it is best to opt for a mug that is specifically made for use in the microwave.

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