Yogurt
The answer
Yogurt lasts 1–2 weeks in the fridge and 1–2 months in the freezer.
How long it keeps
Fridge (40°F) 1–2 weeks safe window
Freezer (0°F) 1–2 months best quality
Room temp 2 hours max then discard
Discard Discard if there is mold, an off smell, or it has been out more than 2 hours.
By state & packaging
State Fridge Freezer
Opened 1–2 weeks 1–2 months
Unopened 1–2 weeks (often past printed date) 1–2 months
Signs it has gone bad
✕ Mold anywhere on the surface
✕ Sharp sour smell beyond normal tang
✕ Excessive watery separation with curdling
FAQ
Is the watery liquid on top of yogurt bad?
No — that is whey, and it is normal. Stir it back in. Mold or an off smell is the real spoilage sign.
Can I eat yogurt past the date on the cup?
Usually, if it has been refrigerated and looks and smells normal — quality dates on yogurt are conservative. Mold means discard the whole cup.