How to Tell If Your Glass Can Go in the Oven

Glass Pan being put into the oven

Table of Contents

Can Glass Go In The Oven?

Glassware can be safely used in the oven as long as you take the proper precautions.

Only use tempered or borosilicate glass, start with a room temperature glass, never one that is cold unless specified safe, and stay under the rated upper-temperature limit for your glass type.

How To Ensure That Your Glass Stays Safe In The Oven

Check For The Oven Safe Symbol

There will be a stamp on the bottom of most glassware indicating whether or not the glass is safe to use in the oven.

Below is the most common symbol indicating that a piece of glass is oven safe. The logos may differ between brands, but they all will be some variation of a very simplistic oven.

Symbol used to indicate that a piece of glass is oven safe

Pick The Right Type Of Glass

A glass that is going into the oven needs to be made of tempered or borosilicate glass. These are the only types of glass that can withstand high temperatures.

Make Sure That The Glass Is Not Cold

If a glass goes from one temperature extreme to another, this is called thermal shock.

Some glasses like borosilicate can handle thermal shock very well, going from the freezer to the oven without a problem.

Still, most glasses will crack under this stress, so it is always safest to let your glassware slowly come up or down to temperature.

Do Not Exceed The Rated Temperature Limit

Any glass that is meant to be used for cooking will be rated with an upper-temperature limit.

This limit could be between 350 and 500 degrees, which is obviously quite a large gap.

Because of this, you always want to make sure that you know exactly how high of a temperature your glass can handle before you begin cooking.

If you already threw away the box and instructions, you can always go to the glassmaker’s website, where you should be able to find the rating for your piece.

Never Use Glass That Is Chipped or Cracked

Glassware that has become chipped or cracked over time has gained a structural weakness in that spot.

Because of this, when it is subjected to the high temperatures of an oven, it is very likely that the glass will fail, causing it to crack further or completely shatter when cooking.

If your glass has become chipped or cracked, it is always safest to throw it away and get yourself a new piece