Kitchen · Containers & Cookware
Can I Use a Plastic Container in a Microwave?
Something else…
What else can go in a microwave?
Something else…
Other answers for Plastic Container
- OvenYES, WITH LIMITS
- MicrowaveYES, WITH LIMITS
- DishwasherYES, WITH LIMITS
YES, WITH LIMITS
Safe only under specific conditions. The conditions are the answer.
Yes, but only when the specific container is labeled microwave-safe or comes with microwave heating directions. Move food out of unlabeled takeout or delivery tubs and cold-storage containers before heating. Follow the container and microwave instructions, including any lid or vent directions.
Compatibility summary
- Can I use them together?Only under conditions
- Main riskMelting and migration
- What gets damagedContainer and food
- InsteadMicrowave-safe glass container
The conditions
Fine to do
- Use a container clearly labeled microwave-safe and follow all limits printed on the container, lid, or packaging.
- Use takeout or delivery packaging only when it gives specific microwave directions, and use it only once.
- Loosen the lid or open its vent when the container directions call for steam release.
- Follow the cookware restrictions in your microwave’s owner’s manual.
Never do
- Never microwave an unlabeled takeout or delivery tub based on its appearance.
- Never use margarine tubs, yogurt cups, cottage-cheese cartons, whipped-topping bowls, or similar cold-storage packaging.
- Never microwave food in its supermarket tray or original plastic wrap unless the package specifically directs it.
- Never continue heating in a container that warps or melts.
Why those conditions exist
Food Heats the Plastic
Microwaves pass through many plastics and are absorbed by the food. Heat moves from the food into the container, which can warp or melt if it was not made for that use.
Intended Use Controls Migration
Food-contact materials are evaluated for intended uses. Heating cold-storage or single-use packaging outside those uses can deform it and allow packaging substances to migrate into food.
Steam Builds Pressure
Food releases steam as it heats. A sealed lid or blocked vent traps that steam, raising pressure under the cover.
The Label Decides
Microwave-safe applies to a specific container under the maker’s directions. It does not promise that every lid position, food, or reuse is acceptable. Some packaging is intended for one microwave heating only.
Delivery tubs can look like reusable microwave cookware. If the container or package gives no microwave directions, appearance is not enough; transfer the food to microwave-safe glass or ceramic.
Sources
- U.S. Department of Agriculture Food Safety and Inspection Service — Cooking with Microwave Ovens
- U.S. Department of Agriculture Food Safety and Inspection Service — Meat and Poultry Packaging Materials
- U.S. Food and Drug Administration — Microwave Ovens
- Whirlpool — Microwave Oven Use & Care Guide
Reviewed 1 September 2026 · Reviewed label guidance, delivery and cold-storage packaging, heat transfer, migration, and venting against USDA, FDA, and Whirlpool guidance.