can glass coffee jar go in microwave

Can Glass Coffee Jars Go In The Microwave?

Glass coffee jars are a popular storage item for both restaurants and households. While they are a great way to store coffee grinds, you may be wondering if they are safe to put in the microwave.

Heat & Stress

Glass coffee jars can safely be used in the microwave but there are important tips to keep in mind. The most important thing to remember is that glass can be sensitive to sudden temperature changes and can easily shatter if heated too rapidly. Whenever placing anything made of glass in the microwave, do so on a low setting and heat it slowly.

Avoid Extreme Temperatures

Containers made of glass should never go in a microwave if they contain cold ingredients, because of the risk of thermal shock. Just as you should avoid putting the jar in a hot oven or the fridge after it’s been heated, the same applies to microwaves. Make sure to let the jar cool to room temperature before microwaving it.

Features to Look For

When considering a jar for microwaving, look for features such as:

  • Microwavable. When picking out a glass jar to use in the microwave, make sure it is specifically labeled for microwave use.
  • Temperature Safe. As glass can easily expand and break due to temperature changes, make sure to find a glass jar made to resist thermal shock.
  • High-Quality. For maximum safety, purchase the best glass you can afford that is free of cracks, chips, and any signs of wear and tear.


Glass jars can safely be used in the microwave, as long as they are designed for microwave use and special precautions are taken, such as heating on a low setting and allowing the jar to cool to room temperature before microwaving. With proper care, glass jars can be a great way to store and reheat coffee grinds and other food items.

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