How long does shelf-stable milk last?

FoodKeeper gives shelf-stable milk 6 to 12 months unopened, as a guide to quality. Once opened, that's 5 to 7 days in the refrigerator.

How to store it

It stays on the shelf until it's opened. USDA explains that aseptic cartons are filled sterile, which is why they don't need a refrigerator. After that, treat it like fresh milk.

USDA says temperatures below 85°F are best, and to avoid anywhere above or beside the stove, under the sink, or in a damp garage or basement. Once it's open, follow any storage instruction on the label.

What to look for

Don't use a carton that's swollen, leaking or damaged. Once it's open, a sour smell or lumps mean it's gone.

Don't use food from a swollen, leaking or damaged pack, and don't taste it to check.

Worth knowing

After opening it needs the refrigerator. USDA's outage chart says to throw away milk if the refrigerator has been above 40°F for over 2 hours.

Similar foods

From preppantry.app. Checked 2 November 2026. Independent tool, not official advice.

How it works

FoodKeeper is USDA's food storage database. Its figures are guides to quality for food stored at cool room temperature, not safety cut-offs, and we show them as USDA gives them. FoodKeeper counts this from the date of purchase. Opened times start when you open the pack.

Where FoodKeeper gives no figure, we say so instead of guessing. The date printed on a package is the manufacturer's, and it's about quality except on infant formula.

Common questions

How long does shelf-stable milk last unopened?

6 to 12 months, according to USDA FoodKeeper, as a guide to best quality. FoodKeeper counts this from the date of purchase.

How long does shelf-stable milk keep once opened?

FoodKeeper gives no figure for an opened pack in the pantry. 5 to 7 days in the refrigerator.

Does shelf-stable milk go bad after the date on the package?

USDA says dates are about quality, except on infant formula. A product should still be safe if handled properly until spoilage shows, so check for an off smell, taste or texture.

What should I look for before using shelf-stable milk?