Can you microwave plastic Tupperware?

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*This post may contain affiliate links. Please see my disclosure to learn more. Do you microwave fictile Tupperware containers to cook and reheat food ? Warming up leftovers or lunchtime meal homework in the microwave is a common practice. Is it bad to use Tupperware in the microwave ?

Some friends of mine endlessly heat up food in their credit card Tupperware containers in the microwave. Microwaves have been improving cooking speed and kitchen efficiency since the 1946, ironically the like year that Tupperware was invented .
There has been much debate about the overall safety of plastics. Brands like Rubbermaid, Ziploc and GladWare use marketing strategies to sidestep any concerns over the safety of their containers, however I remain doubting of the functionality of plastic when placed under conditions of extreme heating system .

Is microwaving Tupperware safe?

My general business about using plastic in the microwave has led me down a rabbit hole of inquiry. The general consensus seems to be that all Tupperware containers are microwave safe and can be used without any concern .
Tupperware products are made with plastics, however all Tupperware products are not microwave safe. 

Tupperware has thoroughly tested their products to determine which ones are microwave safe. In fact, they state that it is condom to microwave food in Tupperware products that are intended for manipulation in the microwave .

Tupperware Microwave Safe Symbol

There are many fictile compounds available to industrial manufacturers. So which plastics are used in the Tupperware pipeline of products ?
My concerns in regards to microwaving Tupperware containers are two fold :

  • Plastic melting in the microwave
  • Plastic leaching chemicals into food

To reduce the concern of microwave, Tupperware has shared a comprehensive examination chart of plastics to help further understand the “ Resin ID Codes ” found in their extensive line of products.

There is merely one way to verify if the Tupperware receptacle is certified dependable for microwave use. Check the bottom of the container and attend for the microwave dependable symbol comprised of 3 crinkled lines .
Tupperware microwave symbol
If the Tupperware or plastic container does not have any labels or symbols on the bottom, then don ’ metric ton use it in the microwave. Don ’ t even use it to store food !

Although there are many products in the Tupperware line that are not designed for cooking, Tupperware has furthered their research and developed an across-the-board line that is considered microwave safe and BPA-free. In fact, all items sold by Tupperware in the United States and Canada since March 2010 are BPA barren .

Can you microwave Tupperware with lid on?

Microwaving food with a hat helps to prevent unnecessary food splatter.Reheating food with a screen besides traps in steam and allows food to heat up much faster, more evenly and besides without the concern of drying out .
Microwave safe Tupperware brands have custom designed lids and seals with a steam-vent feature. The vent must be opened when placing sealed containers in the microwave.

Food should be covered, however the lid should not be sealed airtight. If the lid is sealed on tightly, then you risk a catastrophic exploded food batch and possible perilously intense steam when you reopen the container .

Things to know before microwaving Tupperware containers

Tupperware has a specialize agate line of products that are classified as microwave safe. however, there are a few important realizations that should be understand about microwaving Tupperware containers .

“ Microwave Tupperware products are not designed for cook and consequently are not recommended for use in a microwave oven except for TupperWave Stack Cooker, Rock ‘ N Serve and CrystalWave reheatable products. ”Tupperware

The caller recommends that you avoid reheating sealed foods that are high fat or boodle content. The risk is that those specific foods can become very hot and cause damage to the containers.

In addition, manufacturer instructions clearly state that foods should be reheated in the microwave on medium heat for no longer than 3 minutes.

If longer than 3 minutes is required to heat the food, then stop the microwave at 3 minutes, remove the lid and stir the food. then, resume reheating for less than 3 minutes .


If you have had success using Tupperware in the microwave, then it ’ mho easy to continue along the same path. however, even though the products may be labeled “ safe for microwave use, ” can you truly trust the descriptions ?
After diving into the discipline a short far, I believe that glass and ceramic microwave safe containers are well alternatives to use preferably than microwaving credit card Tupperware.

Covered food heats up quicker and more systematically. Consider using a microwave food cover to expedite the reheat summons and evenly distribute the heat.

Although Tupperware has developed new products over the by few years, they have provided very hard-and-fast instructions that must be accurately followed when using microwavable Tupperware :

  • Do not cut or scratch the plastic
  • Pop the vent
  • Reheat food only
  • Use medium heat
  • 3 minutes or less
  • Do not exceed fill-line

Don ’ t use old or damaged credit card containers in the microwave because they may have exceeded the microwave ability. Doing sol besides puts the food at hazard for encountering toxic spill, sol throw away old Tupperware or use them for purposes other that food memory.

In summation, Tupperware made before 2010 most probably contains BPA in the plastic compound .
When it comes to the cook and food memory products that you have, it ’ s important to understand the uses and misuses.

If you understand the symbols and are confident using microwave safe Tupperware, then I don ’ thyroxine think you should have anything to worry about. however, if you find yourself at all uncertain, then stick with glass or ceramic and merely avoid using all plastics in the microwave .
Can you microwave plastic Tupperware?