Crab legs stay fresh in the freezer for up to three months. The crab should be placed in freezer bags or airtight, freezer-safe containers for storage.
Alternatively, place cooked crab legs on ice for freezing. The meat stays fresh as long as the crab legs remain frozen. If cooked crab legs are not to be consumed right away, place the meat on ice, or refrigerate it within two hours. Place fresh crab in the freezer immediately if it is not to be used within two days. To keep the frozen crab legs fresh as long as possible, make sure to keep them at a consistent 0 degrees Fahrenheit.