Unopened canned whole tomatoes can last for a considerable amount of time when stored properly. The shelf life of unopened canned whole tomatoes can vary based on factors like the manufacturing process, the quality of the can, and storage conditions. In general, you can expect unopened canned whole tomatoes to last as follows:
Pantry: Canned whole tomatoes can last for about 1 to 2 years or even longer in a cool, dark, and dry pantry. Make sure to keep the cans away from direct sunlight and sources of heat.
Refrigerator: While canned tomatoes do not require refrigeration before opening, you can opt to refrigerate them if you prefer. In the refrigerator, unopened canned whole tomatoes can last for about 1 to 2 years as well.
It's important to note that these are approximate guidelines, and the actual shelf life may vary. Always check the expiration or "best by" date printed on the can to get a more accurate idea of its longevity. If the canned tomatoes show signs of bulging, leakage, rust, or damage, do not consume them, as these can be indicators of spoilage.
Once you open a can of whole tomatoes, transfer any unused portion to a clean, airtight container, and refrigerate it. The tomatoes should be used within a few days after opening to maintain their quality and safety.