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How long does opened milk last?
Updated 2026-05-13 · USDA FoodKeeper & FDA guidelines
After opening
1 week
5-7 days past sell-by date
The short answer
Opened Milk lasts as long as you store it correctly — which can mean anywhere from a few days on the counter to a year in the freezer. The numbers above represent best quality per USDA and FDA guidelines, not absolute safety limits.
Why these numbers vary
Cow's milk after opening. Storage life depends on temperature consistency, humidity, packaging, and how fresh it was when you got it. Refrigerators that swing between 38°F and 45°F shave days off these numbers; vacuum-sealing or freezing extends them.
How to tell if opened milk is bad
- Sour smell
- Lumpy or chunky texture
- Yellowish color
Storage tips
- Coldest part of fridge (back, not door)
- Often good 5-7 days past sell-by
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Frequently asked questions
How long does opened milk last in the after opening?
Opened Milk lasts 1 week in the after opening. 5-7 days past sell-by date
How can you tell if opened milk is bad?
Watch for: Sour smell; Lumpy or chunky texture; Yellowish color.