How long does Beer (opened) last?
How long does Beer (opened) last? fridge ~1 day. Plus spoilage signs, sources, and an unopened-vs-opened note.
Quick answer
Sealed / unopened: 3–6 months
Signs Beer (opened) has gone bad
- Flat (no fizz), skunky or wet-cardboard smell, sour or vinegar taste.
- Sealed beer that's expired may be flat but usually safe.
Discard immediately if
- Smells strongly like vinegar
- Has been open more than 5 days (wine) or 1 day (beer)
- Tastes sharply sour or rancid
Why guidance varies
Pasteurization method (HTST vs. UHT vs. cold-pressed), preservative content, and container type (carton vs. plastic vs. glass) all change shelf life dramatically.
Get a heads-up before it expires. Search the full database instead.
Frequently asked questions
How long does Beer (opened) last?
In the fridge: ~1 day. Sealed / unopened: 3–6 months. Opened beer goes flat quickly. Drink same day. Sealed craft beer: 3–6 months past printed date.
How can you tell if Beer (opened) has gone bad?
Signs that Beer (opened) has gone bad: Flat (no fizz), skunky or wet-cardboard smell, sour or vinegar taste; Sealed beer that's expired may be flat but usually safe.
What does the date label on Beer (opened) mean?
Beer (opened) usually carries a "Best By" date. A quality marker — the product is at peak quality before this date, but it’s safe to eat afterward if stored correctly. See our date-labels guide for the full breakdown.
Sources for this answer
- A USDA FoodKeeper — Storage windows and refrigeration guidance for this category.
- A FDA — Are You Storing Food Safely? — Date-label interpretation and food-safety baseline.