{"schema":"askedwell-earned-page-v1","url":"https://askedwell.com/pages/how-long-does/milk-last","question":"How long does milk last in the fridge?","short_answer":"Unopened pasteurized milk: 5-7 days past sell-by (USDA FoodKeeper). Opened: 5-7 days. UHT/ultra-pasteurized: 30-90 days unopened, 7 days opened. Raw milk: 5-10 days from production. Smell + taste are reliable indicators — milk doesn't silently spoil.","long_answer":"Milk shelf life depends on three variables: pasteurization method, whether the carton has been opened, and refrigerator temperature. The \"sell-by date\" on the carton is conservative — most milk lasts 5-7 days past it if stored properly at 40°F (4°C) or below.\n\n**Standard pasteurized milk (HTST — High-Temperature Short-Time):**\n\n**Unopened:**\n- **Best quality:** until sell-by date\n- **Safely drinkable:** 5-7 days past sell-by (refrigerated below 40°F)\n- **Spoilage signs:** off-smell (sour, ammonia-like), curdling, sliminess\n\n**Opened:**\n- **Best quality:** 5-7 days after opening\n- **Safely drinkable:** 7-10 days if stored properly\n- **Note:** opening introduces bacteria; smell-test after 5 days\n\n**UHT / Ultra-pasteurized milk (the \"shelf-stable\" type):**\n\nUHT (Ultra-High Temperature) milk is heated to 280°F (138°C) for 2-4 seconds, killing all bacteria including spores. This gives much longer shelf life.\n\n**Unopened UHT:**\n- **30-90 days** at room temperature (per FDA / Codex)\n- Common in European cartons + boxed milk\n- \"Best by\" date is conservative; safe well past\n\n**Opened UHT:**\n- **7-10 days** refrigerated (same as standard once opened)\n- No advantage over standard pasteurized after opening\n\n**Raw milk:**\n- **5-10 days** from milking, refrigerated below 40°F\n- More variable due to live cultures + bacteria\n- Smell + sour taste indicate spoilage\n- Not legal for direct sale in many US states + EU jurisdictions\n- Cheese-making milk for raw aged cheeses (60-day aging requirement under FDA)\n\n**By milk type:**\n\n| Milk Type | Unopened (refrigerated) | Opened |\n|---|---|---|\n| Whole milk (3.25% fat) | 5-7 days past sell-by | 5-7 days |\n| 2% milk | 5-7 days past sell-by | 5-7 days |\n| Skim / 1% milk | 5-7 days past sell-by | 5-7 days |\n| Lactose-free milk | 5-7 days past sell-by | 5-7 days |\n| UHT milk (Parmalat, etc.) | 30-90 days room temp | 7-10 days fridge |\n| Raw milk | 5-10 days from milking | 3-5 days |\n| Buttermilk | 7-14 days past sell-by | 7-14 days |\n| Heavy cream | 7-10 days past sell-by | 7-10 days |\n| Half-and-half | 7-10 days past sell-by | 7-10 days |\n| Almond/oat/soy milk (UHT) | 30-90 days unopened | 7-10 days |\n| Almond/oat/soy milk (refrigerated) | 7-10 days past sell-by | 5-7 days |\n\n**Storage temperature science:**\n\nMilk lasts longest at **32-40°F (0-4°C)**. Above 40°F, bacterial growth doubles every ~1°F. At 50°F:\n- Shelf life cuts in half\n- Bacterial counts rise dramatically\n- \"Off\" taste appears in 2-3 days\n\nRefrigerator door is the warmest spot (45-50°F due to opening). Store milk in the back of the fridge or main shelf, NOT the door.\n\n**The sell-by vs use-by distinction:**\n\n- **Sell-by date:** retailer should sell by this date (conservative; not safety-critical)\n- **Use-by date:** quality date set by manufacturer (some safety implication)\n- **Best by date:** quality recommendation; not safety\n- **Expiration date:** for infant formula + medical foods (regulated)\n\nFor milk in the US, the date is typically \"sell-by\" and milk is safe 5-7 days past it.\n\n**Spoilage indicators (use these, not the date):**\n\n1. **Smell:** sour, \"off,\" ammonia-like, vinegary → discard\n2. **Texture:** chunky, slimy, lumpy → discard\n3. **Color:** yellow tint (whole milk should be white) → discard\n4. **Taste:** sour, off, \"milk-feels-different\" → discard\n5. **Appearance:** separated layers in fridge → may be fine if shaken; discard if also smells off\n\n**Refrigerator best practices:**\n\n- Set fridge to **34-38°F (1-3°C)** for best dairy life\n- Store milk in main fridge body, NOT door\n- Close cartons tightly after use\n- Don't return unused milk from glass back to original carton (introduces oral bacteria)\n- Pour from carton into glass, don't drink from carton\n\n**Buttermilk + cultured products:**\n\nButtermilk and yogurt have live cultures that actively suppress spoilage bacteria. These last:\n- **Buttermilk:** 7-14 days past sell-by\n- **Yogurt:** 7-14 days past sell-by (look for separation = fine; mold = discard)\n- **Sour cream:** 7-14 days past sell-by\n\n**Cream products:**\n\n- **Heavy cream:** 7-10 days past sell-by (high fat = more stable)\n- **Whipped cream (homemade):** 24 hours\n- **Half-and-half:** 7-10 days past sell-by\n- **Light cream:** 7-10 days past sell-by\n\n**Plant milks (almond/oat/soy):**\n\n- **Refrigerated section (Silk, Califia):** 7-10 days past sell-by\n- **Shelf-stable UHT (Tetra Pak):** 30-90 days unopened, 7-10 days opened\n- Often last longer than dairy due to lower protein content for spoilage bacteria\n\n**Freezing milk:**\n\nYes, you can freeze milk (whole, 2%, skim, plant milks all freeze):\n- Freezer life: **3 months** quality; 6+ months safety\n- Texture changes after thaw (separation; shake well)\n- Best for cooking/baking, less ideal for drinking after thaw\n- Don't freeze in glass containers (expansion = breakage)\n- Pour off ~1 inch from carton before freezing (expansion room)\n\n**Don't:**\n- Trust sell-by date as absolute (5-7 days past is normal)\n- Smell-test very small amounts (use 1-2 tablespoons)\n- Drink milk that smells off \"just to check\" (taste-testing isn't safer)\n- Store milk in door (temperature variation reduces life)\n- Refrigerate cold milk that's been at room temp >2 hours\n- Re-pour unused milk from glass back to carton\n\n**For food safety:**\n\nPer USDA + FDA: refrigerated milk below 40°F is safe to drink for 5-7 days after sell-by date, longer if it doesn't show spoilage signs. The 2-hour rule applies: milk left at room temperature for more than 2 hours should be discarded (rapid bacterial growth above 40°F).\n\n**Cross-reference:** see /pages/how-long-does/eggs-last for related dairy timing + /pages/how-long-does/chicken-fridge for refrigeration limits + /pages/what-temperature-for/cooking-chicken for protein temperatures.\n\nMost published references (USDA FoodKeeper App, FDA Refrigerator + Freezer Storage Chart, StillTasty, International Dairy Foods Association) converge on 5-7 days past sell-by for opened/unopened standard pasteurized milk, 30-90 days for UHT, and refrigerator temperature ≤40°F as the critical safety factor.","duration_iso":"P7D","ranges":[{"condition":"Unopened pasteurized (past sell-by)","duration":"5-7 days"},{"condition":"Opened pasteurized","duration":"5-7 days"},{"condition":"UHT unopened (room temp)","duration":"30-90 days"},{"condition":"UHT opened (refrigerated)","duration":"7-10 days"},{"condition":"Raw milk from milking","duration":"5-10 days"},{"condition":"Frozen milk","duration":"3 months quality, 6+ months safety"}],"variables":[{"name":"Pasteurization method","effect":"HTST (standard): 5-7 days past sell-by. UHT: 30-90 days unopened."},{"name":"Fridge temperature","effect":"Below 40°F = full shelf life. At 50°F = half. Door is warmest spot."},{"name":"Open vs unopened","effect":"Opening introduces bacteria; smell-test after 5 days regardless of date"},{"name":"Milk type","effect":"Buttermilk lasts 7-14 days past sell-by; heavy cream similar; cultured products last longer due to live cultures"},{"name":"Storage location","effect":"Main fridge body lasts longer than door (door temp varies with opening)"}],"sources":[{"label":"USDA FoodKeeper App","url":"https://www.foodsafety.gov/keep-food-safe/foodkeeper-app","note":"Official US storage time database with dairy section"},{"label":"FDA Refrigerator + Freezer Storage Chart","url":"https://www.fda.gov/food/buy-store-serve-safe-food/refrigerator-freezer-storage-chart","note":"Federal guidelines for dairy refrigeration"},{"label":"International Dairy Foods Association","url":"https://www.idfa.org/","note":"Industry standards for milk storage + spoilage indicators"},{"label":"Cornell Dairy Foods Extension","note":"Academic reference for milk shelf life science"}],"faq":[{"question":"Is milk past its sell-by date still safe to drink?","answer":"Yes, typically 5-7 days past sell-by date if refrigerated below 40°F. The sell-by date is for the retailer, not safety. Trust your senses: if milk smells, looks, or tastes off, discard it. Milk doesn't silently spoil — spoilage is detectable. Many dairy products are safely consumed past the printed date with proper storage."},{"question":"Why does my milk go bad quickly?","answer":"Three common causes: (1) Refrigerator runs too warm (set to 34-38°F); (2) Storing in fridge door instead of main shelf; (3) Cross-contamination from drinking out of carton or pouring back unused milk. Solution: check fridge temperature, store milk in main body, always pour into clean glass and discard any not used."},{"question":"Can I freeze milk for later use?","answer":"Yes — whole, 2%, skim, and plant milks all freeze well. Quality lasts 3 months frozen, safety extends to 6+ months. Texture changes after thaw (separation, slightly grainy), so frozen milk is best for cooking + baking. For drinking after thaw, shake well and use within 5-7 days. Pour off 1 inch from carton before freezing (expansion room)."}],"keywords":["how long does milk last","milk shelf life","milk past sell by","opened milk fridge","milk storage time"],"category":"cooking","date_published":"2026-05-20","date_modified":"2026-05-20","license":"CC-BY-4.0","attribution":"https://askedwell.com"}