Skip to Content

Can Glass Go in the Oven? (All You Need to Know)

Do you ever wonder and stress while putting glassware in the oven thinking whether it will break or not? This may be one of the recurring concerns in your kitchen. 

Nevertheless, whether to heat casserole for dinner, to cook your favorite meals in beautiful glassware, or just to heat warm milk in the oven, being knowledgeable about what types of glass are oven friendly can save you from all the trouble.

Can Glass Go in the Oven?

Glass can go in the oven only if it is marked as “oven-safe”. If the glass that you are putting in the oven is made with heat-resistant materials then, the glass will not crack or shatter. Nevertheless, glass made with tempered, pyrex, and borosilicate glass is better to use in ovens.

Is it safe to put glass in the oven?

It is safe to put glass in the oven especially those glasses that are “oven proof”. Oven-proof glass also has limits therefore, you need to take the necessary steps to avoid any breakage. 


It is safe to put glass in the oven at 180 degrees especially if you preheat the oven first and put the glass in a moderate heat to avoid breakage. 


It is safe to put glass in at 350 degrees. Pyrex and tempered glass will be the best options if you do not want your glass to break.


You can put glass in the oven at 375 degrees of temperature, however, the glass should not be thin layered. The glass should be thickly layered which will take considerable time to heat up and will maintain the temperature once it is heated to the limit.


Glass can be put at 400 degrees in the oven. However, not all glass can withstand 400 degrees of heat. Nevertheless, Pyrex glass is very much safe to put in the oven at 400 degrees.


You can put glass at 425 degrees. You can put pyrex, thermal, and borosilicate glass safely in the oven at about 425 degrees.


Although it is safe to put glass such as pyrex in the oven at 450 degrees nevertheless, in this case, it is not the temperature rather the thermal variation that comes into play.

Your glass is safe to put at 450 degrees but you have to make sure that you do not change the temperature drastically.


It is safe to put only certain types of glass in the oven that has a high melting point. Consequently, it is safe to put glass at 500 degrees however, you must preheat the oven first to prevent thermal shock or variation. 

Does glass break with heat? What temperature does glass break in the oven?

Glass can break in the oven if you expose the glass to high temperature, thermal variation, and to fluctuating temperature.

Moreover, thin glass can break at about 300 degrees while other sturdier glasses can break at about 900 degrees Fahrenheit however, this varies based on the material used in the glass.

What type of glass can withstand oven-high heat?

Not all types of glass can withstand high heat however, some glasses can tolerate high temperature if they are made out of heat-resistant components like silica or soda-lime.

The following list is the perfect example of gasses that can withstand high oven heat.

Pyrex Glass:

Pyrex glass is made with heat resilient materials and can withstand heat. Pyrex glass is made out of soda-lime glass and has low thermal expansion. 

In addition, as Pyrex glass can handle the rapid thermal expansion of glass, therefore, it does not break or shatter easily. 

Tempered Glass:

Tempered glass offers the most durability. Tempered glass is made by the thermal or chemical tempering process. 

In addition, tempered glass that is made out of soda-lime can offer more functionality and can withstand high thermal shock, and has low thermal expansion.  

Borosilicate Glass:

Borosilicate glass is made out of silica and boron trioxide and can tolerate very high temperatures. Borosilicate glass can withstand from 350 to 750 degrees of heat.

Borosilicate glass does not react badly to sudden temperature changes. Moreover, borosilicate glasses will not break in the oven due to high heat and they have very low thermal expansion.

Quartz Glass:

Quartz glass is another glass that can withstand heat very effectively and it is made out of pure silica which makes it more adaptable to high heat.

Due to its high melting point, quartz glass is resistant to thermal shock and also has low thermal expansion. 

How do you know if glass is oven-safe?

To know if your glass is oven safe or not, first, you have to check whether the glass is made out of pyrex glass or not. Pyrex glass has low thermal expansion and withstands heat.

Moreover, you need to check whether the glass is borosilicate glass or tempered glass. If not, putting the glass in the oven will not be a good idea.

You also need to make sure whether your glass has any metallic component in it because the glass with metal edging is more prone to cracking.

What happens if you put non-oven-safe glass in the oven?

If you put non-oven-safe glass in the oven, the glass can break and melt and can cause your food to be ruined.

In addition, when someone puts non-oven-safe things in the oven, the temperature becomes too much to handle for the glass as it is not manufactured to tolerate high temperatures. 

What can cause the glass to break in the oven?

Glass can break in the oven if you are exposing your glassware to drastic temperature changes.

In addition, fluctuating temperatures can be another cause of breakage in the glass. If you put your frozen glassware straight to the oven from the fridge, the differing temperature becomes too much to handle for the glass therefore, due to thermal shock, it will break in the oven. 

Moreover, your glass can also break if you use glass that is not meant for oven use, for example, glassware with a metal edge, glass bowl, and drinking glass. 

How to keep glass from breaking in the oven?

Breakage in glassware while it is in the oven, is perhaps the most recurring thing. However, being knowledgeable about the ways of protecting the glass from breaking in the oven allied with some precautionary steps can simply help keep your glassware intact.

No Sudden Temperature Changes:

To avoid breakage, you should not expose your glass to sudden temperature changes meaning thermal shock. Moreover, you should not put your glassware in the oven straight from the fridge as this can cause breakage to the pot.

Additionally, you should always need to make sure that your glassware is at room temperature and it should be put in a preheated oven.

Add Water:

This is a very old technique when it comes to saving the dishes made out of the glass from breaking in the oven. All you need to do is to pour some liquid at the bottom of the pan while baking or cooking dry foods.

Consequently, it will help the glass from going into drastic temperature changes meaning from going into thermal shock.

Follow Temperature Limit:

Oven-safe glass also has a limit to which it can withstand oven heat. It is rather better to stay below the recommended temperature to prolong the durability. 

In addition, you should always follow the recommended temperature meaning somewhere between 350° F-500 ° F.

Tempered Glass:

Tempered glass can endure high temperatures and has low thermal expansion. This glass will not be subjected to breaking easily

Consequently, if you use tempered glassware in the oven, you can benefit from not getting your glass broken occasionally when placed in the oven. 

Can pyrex glass go in the oven? 

Pyrex glass is made out of soda-lime glass and can tolerate the hot temperature therefore, Pyrex glass can go in the oven

In addition, if you put the pyrex glass in the preheated oven, this way there are fewer chances of breakage inside the oven and it increases the durability.

Can glass bowls go in the oven?

Glass bowls such as Anchor, Duralex and Ikea can go in the oven. Anchor glass bowls can withstand the heat but you must preheat the oven first.

Duralex and Ikea glass bowls also go in the oven. They are specially designed for cooking in the oven and are susceptible to a certain degree of thermal shock but generally, glass bowls are less durable in terms of performance.

Can you put a drinking glass in the oven? 

Drinking glasses are generally not made to be put in the oven; however, drinking glasses that are labeled as “oven-safe” can be put in the oven. 

Drinking glasses are very fragile and are not made with tempered glass therefore, they will end up cracked and shattered. Nevertheless, you can use your drinking glass in the microwave for one or two minutes.

Can a glass lid go in the oven? 

The glass lid can go in the oven however, it is better not to expose your glass lid to differing temperatures. Additionally, you should put glass lids in a moderate-temperature oven. 

In addition, glass lids made out of borosilicate glass can do well in the oven as they are specifically made for these purposes. 

Although any oven-proof glass goes in the oven, it is better to preheat the oven to reduce the temperature variation and to prevent breakage. Any glass that has a low coefficient of thermal expansion can go in the oven however, you have to take all the precautionary steps beforehand.