Can You Put Cardboard Pizza Box In Oven

Can You Put Cardboard Pizza Box In Oven? Safety Tips

You just ordered a delicious pizza from your favorite pizzeria. After enjoying a few slices, you find yourself with some leftovers. Now, the question arises: can you put a pizza box in the oven to reheat it?

In this article, we will explore the nature of cardboard, oven temperatures, manufacturer’s recommendations, alternative methods for reheating pizza and safety considerations when using kitchen appliances.

Putting Cardboard Pizza Box In The Microwave

Nature of cardboard

  1. Cardboard properties: Cardboard is a versatile and widely used material made from cellulose fibers derived from wood pulp. It is typically made up of multiple layers of paper, separated by fluting to increase strength, insulation and stability. Cardboard is lightweight, strong and cost-effective, making it an ideal material for custom packaging including pizza boxes.
  2. Flammability of cardboard: The cardboard is flammable, with its ignition temperature ranging from 430°F to 475°F (220 – 245°C). When exposed to this temperature range, it can catch fire relatively quickly, posing a significant risk if placed in high-heat environments, like your oven.
  3. Limitations of cardboard in terms of heat resistance: While cardboard is an excellent insulator, it has poor heat resistance, which means it doesn’t fare well when exposed to high temperatures for an extended period.

Cardboard boxes can start to deteriorate, warp or emit unpleasant odors when subjected to heat above 200°F (93°C), compromising the quality and safety of the boxed contents.

Oven temperature and cardboard

A. Discuss the typical temperature range of household ovens

The temperature range of most household ovens lies between 170 – 550°F (77- 288°C), which significantly exceeds the ignition temperature of cardboard. As previously mentioned, cardboard can catch fire at temperatures as low as 430°F (220°C), posing a safety hazard if put in the oven.

B. Explain the potential consequences of exposing cardboard to high temperatures

Placing a pizza box in the oven can cause a range of problems, from the box catching fire to releasing toxic gases due to the inks, adhesives and potential food remnants on the box. In the worst-case scenario, a cardboard box can catch fire, causing smoke, property damage, or personal injury.

C. Address the risk of cardboard catching fire in the oven

Given the risks mentioned above, putting a cardboard pizza box in the oven is not advisable due to safety hazards and potential damage to your oven and food. Instead, explore alternative methods for reheating pizza while maintaining flavor and quality.

Manufacturer’s instructions and recommendations

A. Discuss the importance of following the manufacturer’s instructions

Following the manufacturers’ instructions ensures the proper use of their products, guaranteeing your safety and the quality of the food. Pizza boxes, including those come with specific warnings and instructions that should be followed to avoid any mishaps.

B. Examine the guidance provided by pizza box manufacturers regarding oven usage

Most pizza box manufacturers, including [company name], advise against placing their boxes in the oven as it poses a fire risk and can compromise the quality of the pizza.

C. Highlight any specific warnings or instructions related to cardboard and ovens

Always read and follow the warnings and instructions printed on the pizza box. Some general rules to keep in mind include:

  • Do not preheat the oven with a pizza box inside
  • Avoid baking directly on an open flame or electric coils
  • Use only oven-safe pans when baking pizzas
  • If heating the pizza for more than 30 minutes, it is best to remove the cardboard box
  • If a cardboard pizza box gets wet, do not use it in the oven as it may ignite
  • Do not leave an empty pizza box in a hot oven. Never put a frozen pizza directly into an oven without putting it into a pan first. The heat from the oven can cause the box to ignite and start a fire. Additionally, never leave a pizza in an oven unattended while it is cooking as the heat can cause the cardboard box to become flammable and spark a fire.

Finally, keep your kitchen clean and make sure that any crumbs or grease are cleared away regularly. Grease and moisture build-up are major contributors to oven fires.

Make sure to check your appliance regularly for lint and grease buildup, which can also be a fire hazard. Following these safety tips will help you ensure that you enjoy your pizza without putting yourself or your home at risk of a kitchen fire.


All in all, the answer to whether you can put a cardboard pizza box in the oven depends largely on the type of cardboard used and what purpose you’re looking to achieve. Ultimately, if your goal is to heat an already-baked pizza and it’s made with safe materials, then placing it in an oven heated at temperatures below 400 degrees Fahrenheit shouldn’t be an issue.

However, avoid using a cardboard pizza box if you want to bake a pizza from scratch. It can lead to not only burning your food but also endangering yourself and your kitchen. Thus, safely enjoy hot pizzas without worrying about your trusty cardboard boxes catching fire!