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How long does butter last?
Quick answer
Butter lasts 3 months in the refrigerator, and about 2 days at room temperature. In the freezer it keeps for 9 months (quality — frozen food stays safe indefinitely).
| Where | Safe for |
|---|---|
| 🏠 Room temperature (counter) | 2 days |
| 🧊 Refrigerator (≤40°F / 4°C) | 3 months |
| ❄️ Freezer (0°F / −18°C) | 9 months |
Good to knowFine on the counter 1-2 days in a covered dish; months in the fridge.
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How to tell if butter has gone bad
Dairy is more forgiving than most people think — but when it turns, it tells you. Trust your senses before any calculator — including ours. Throw butter away if you notice:
- An off, sour, or unusual smell that wasn't there when fresh
- A slimy, sticky, or tacky surface texture
- Visible mould or unexpected discolouration
- It's been past the safe window in the table above
⚠️ Bacteria that cause food poisoning often produce no smell, taste, or visible change. Food can look perfectly fine and still make you sick — that's why the time limits matter even when everything seems okay.
Storage tips for butter
Store dairy on interior fridge shelves, never the door — the door is the warmest spot and temperature swings shorten the life of milk and eggs noticeably.
Keep containers closed tight. Dairy absorbs odours from the fridge around it, which is why old milk sometimes tastes like onions before it's actually spoiled.
Not sure about your exact situation?
Tell the checker where your butter has been and for how long — get an instant verdict.
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