Is Tupperware Dishwasher Safe?

For decades, homeowners and kitchen enthusiasts have pondered the question: Is it safe to put Tupperware in the dishwasher?

Many are left uncertain about putting their special containers inside the dishwasher.

Yes, Tupperware is dishwasher safe, but there’s more to the story than a simple affirmation.

Dive deeper into this article to unravel the evidence-based findings and dispel the age-old myths surrounding Tupperware and dishwashers.

Historical Perspective of Tupperware

Over the years, various rumors have spread regarding the safety of placing Tupperware in the dishwasher. While some believe the dishwasher’s intense heat and water pressure can cause Tupperware to warp, melt, or release harmful chemicals, others argue modern Tupperware is designed to withstand the rigors of dishwasher cleaning.

To address these concerns, let’s delve into the history of Tupperware, its manufacturing processes, and the advances in material science that have shaped its current form.

Historically, Tupperware produced before 1979 was not designed to be dishwasher safe. The plastics in these earlier models did not withstand high temperatures and dishwasher detergents. As a result, early Tupperware containers often became brittle, warped, or discolored when cleaned using a dishwasher.

These early experiences mostly led to the belief that Tupperware or other plastic containers shouldn’t be placed in the dishwasher. This belief persisted even as Tupperware and other manufacturers made significant advancements in plastic technology.

Is It Okay to Put Tupperware in a Dishwasher?

With the evolution of material science and dishwasher designs, modern Tupperware products are now more resilient and dishwasher-safe.

Today’s Tupperware containers are made from high-quality plastics that can withstand the heat and pressure of a dishwasher without warping, melting, or releasing harmful chemicals.

Furthermore, modern dishwashers are designed to be more gentle on dishes, including plastic containers, ensuring they come out clean without damage.

Most modern dishwasher-safe Tupperware products are marked with specific symbols on the container that indicate their dishwasher compatibility. These signs provide clear instructions on whether the product can be safely placed in the dishwasher. You can find those at the bottom of the container. By following these guidelines, homeowners can ensure the longevity and safety of their Tupperware products.

Tupperware Heritage Collection 36 Piece Food Storage

  • 36 Piece Food Storage Container Set (18 containers + 18 lids)
  • Vintage Colors
  • Dishwasher Safe
  • BPA Free

Is Glass Tupperware Dishwasher Safe?

Glass Tupperware is generally considered dishwasher-safe. The glass material can withstand the high temperatures and aggressive detergents found in dishwashers.

However, it’s better to find that the lids, especially if made of plastic or silicone, are also dishwasher safe before putting them inside. Always check the manufacturer’s instructions before placing glass Tupperware in the dishwasher.

Is Vintage Tupperware Dishwasher Safe?

Vintage Tupperware, especially those produced before 1979, was not made to be dishwasher safe. The plastics in these earlier models were not as resilient to dishwashers’ high temperatures and dishwasher detergents.

As a result, vintage Tupperware containers might become brittle, warped, or discolored when exposed to the harsh environment inside of a dishwasher. If you possess vintage Tupperware, it’s recommended to hand wash them to preserve their quality and longevity.

Are Tupperware Lids Dishwasher Safe?

Tupperware lids, like the containers themselves, have evolved over the years. While the containers are often the primary focus, the lids play an equally crucial role in preserving the freshness and quality of the stored food because of the tight seal. Those are designed to fit snugly on the containers, creating an airtight seal.

But the question arises: Are these lids dishwasher safe? Most modern Tupperware lids are designed to be dishwasher safe, but not all. However, there are a few considerations to remember.

  • Material: The lid’s material plays a notable role in determining its dishwasher safety. If the lid is made of high-quality plastic, it can withstand the dishwasher’s environment.
  • Safety signs on Tupperware lids: To determine whether the lids are dishwasher safe, you need to look for specific signs on the lids. Most modern Tupperware lids will have a symbol that looks like a small dishwasher with water droplets indicating whether they fit to be washed in the dishwasher.
  • Seals and Gaskets: Some Tupperware lids have seals or gaskets to ensure an airtight fit. These components might be more sensitive to the heat and detergents in a dishwasher. It’s advisable to remove and wash them by hand.
  • Placement in dishwasher: Even if the lid is dishwasher safe, it’s recommended to place it on the top rack of the dishwasher. This ensures that it’s away from the high heat of the dishwasher’s bottom, reducing the risk of warping or melting.

Putting non-dishwasher-safe lids in the dishwasher can lead to damage. The dishwasher’s high heat and strong water jets can cause the lid warping, cracking, or discoloration. If your Tupperware lids are not dishwasher safe, it’s important to wash them by hand.

Other Tupperware Brands and Dishwasher-Safety

While ‘Tupperware’ has become an everyday term for plastic food containers, several other brands offer similar products. These brands also have embraced the need for dishwasher-safe products, but checking individual products for specific care instructions is always essential.


Rubbermaid is another famous brand known for its high-quality, durable plastic containers. Most Rubbermaid containers and lids are dishwasher safe.

However, as with Tupperware, it’s essential to check for any specific markings or instructions on the product. Some Rubbermaid containers may have temperature or cycle settings limitations.


Snapware, another popular brand, also offers dishwasher-safe plastic food containers. This brand provides various food storage solutions, including glass and plastic containers.

Their products are generally dishwasher safe, but placing them on the top rack is advisable to ensure they remain in good condition.


LocknLock, known for its unique locking mechanism, airtight seal, and leak-proof containers, is designed to withstand the dishwasher.

Most LocknLock containers and lids are dishwasher safe, but it is always recommended to check the bottom of each container for specific care instructions.

Where to Put Tupperware in the Dishwasher?

Ensuring the longevity and quality of your Tupperware or any plastic container doesn’t just stop at checking if it’s dishwasher safe. Proper placement within the dishwasher is equally crucial.

To ensure the safety and longevity of your Tupperware or any plastic container, always place them on the top rack of the dishwasher. This position keeps them away from the intense heat and direct water jets, ensuring they remain in good condition after each wash.

If placed improperly, the dishwasher can be a harsh environment for plastic containers, with water jets and heating elements posing potential risks to Tupperware. The damage can be severe if the plastic is low-quality.

Many people place Tupperware on the lower rack of the dishwasher, assuming it will be safer there. However, this is not the case. The lower rack of the dishwasher is closer to the heating elements, making it a risky place for plastic containers and increasing the risk of melting or warping.

Drying Considerations in Dishwasher

When cleaning Tupperware in the dishwasher, one important consideration is the drying process. Plastics, including Tupperware, can be challenging to dry thoroughly in the dishwasher because of the heat.

Plastic containers, including Tupperware, often retain water droplets after a dishwasher cycle. This is because plastic doesn’t keep heat as long as materials like glass or ceramic, making it cool down faster and preventing complete drying.

Additionally, the shape and design of Tupperware can make it difficult for water to evaporate during the drying cycle. Due to the air-tight lids of Tupperware, if the containers are not dried well in the dishwasher and stored with the lid closed, bacteria may grow inside them.

After the washing cycle, drying the plastics by hand is frequently recommended to ensure that Tupperware is completely dry. After removing them from the dishwasher, take a moment to check each for any remaining water. Use a clean paper towel to dry the inside thoroughly, the outside of the containers, and the lids. This may seem dull work, but it is better for your Tupperware and health.

What Symbol Means Dishwasher Safe?

When it comes to determining whether a product is dishwasher-safe, there’s a universal symbol that consumers can look for. This symbol resembles a square box with some water droplets above it. If this symbol is present on your Tupperware or any other product, it indicates that the item is safe to be placed in the dishwasher.

However, it’s essential to note that even if a product is labeled as dishwasher safe, it’s always a good practice to check the manufacturer’s specific care instructions. Some products might be dishwasher safe but may have particular placement recommendations, such as being placed on the top rack only. Some of them may also have temperature limitations.

Frequently Asked Questions

Is Tupperware BPA free?

To address consumer concerns, Tupperware announced that all its products made after March 2010 are BPA-free. Bisphenol A, commonly known as BPA, has recently been a health concern. BPA is a chemical compound that has been used in the production of plastics for many years. Research has shown that BPA can be deposited into food or beverages from containers made with BPA, especially when exposed to high temperatures or acidic conditions.

Given the potential health risks, many manufacturers, including Tupperware, have transitioned from using BPA. This means that Tupperware made after March 2010 is BPA-free and does not pose the same risks of BPA leaching into food. However, checking the packaging or product labeling for confirmation is always a good idea.

Can Tupperware Go in the Microwave?

How to Tell if Tupperware is Microwave Safe? This is a very concerning question for every microwave user because microwaving become a common practice in many households due to its convenience and time-saving benefits. Microwaving food in plastic containers has been another concern.

Regarding Tupperware, many of their products are designed to be microwave-safe. However, it’s crucial to check for specific symbols or markings on the product that indicate its microwave compatibility.

The universal symbol for microwave safety looks like a series of wavy lines representing microwaves. If this symbol is present on your Tupperware product, it indicates that the item can be safely used in the microwave.


Tupperware, primarily those produced after 1979, is designed to be dishwasher safe due to advancements in material science. However, it’s essential to check for dishwasher safety markings and place them on the top rack to ensure longevity.

While modern Tupperware is BPA-free, ensuring safety with food, drying can be challenging, often requiring hand drying post-wash. Like Tupperware, other brands such as Rubbermaid, Snapware, and Lock&Lock are generally dishwasher safe, but always check for specific care instructions.

Tupperware and similar containers can be safely and conveniently cleaned in the dishwasher with proper care.

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