Expiration Date Calculator

Not always. For shelf-stable foods (canned goods, sugar, rice), printed dates indicate quality, not safety. For perishables like meat, dairy, and fresh produce, approaching or exceeding printed dates increases risk. This calculator uses conservative USDA safe storage windows that are more reliable than printed package dates for perishables.

Once a week, go through the refrigerator and check dates. Move older items to the front. Items nearing the end of their safe window should be planned into this week's meals or frozen. For pantry items, a monthly check is sufficient. Mobile apps like Nosh, Kitche, or Fridge Pal can help track dates automatically.

Partially. Strong off-odors, sliminess, and visible mold are reliable indicators that food has spoiled. However, many dangerous pathogens (Salmonella, E. coli O157:H7, Listeria, Campylobacter) produce no detectable odor or appearance change. Foodborne illness is often caused by food that looks, smells, and tastes normal. Time and temperature guidelines are more reliable than sensory checks alone.

Refrigerate at 35–38°F (use a refrigerator thermometer). Store raw meat on the bottom shelf in sealed containers. Keep items in their original packaging until use. Do not overpack the refrigerator — air circulation is essential. Keep the crisper drawer humid for vegetables and less humid for fruits.

Generally yes for produce and dairy, because many organic products lack preservatives added to conventional versions. Organic milk treated by standard pasteurization lasts 1–2 weeks; ultra-pasteurized organic milk lasts 2–3 months. Organic produce without wax coatings or post-harvest treatments may have shorter shelf life than conventionally treated counterparts.

Longest: honey (indefinite), white sugar (indefinite), pure salt (indefinite), white rice in sealed container (5 years+), hard cheeses (months). Shortest: raw oysters (1–2 days), raw poultry (1–2 days), raw ground meat (1–2 days), raw fish (1–2 days), fresh herbs (1–2 days unwashed). Temperature has a dramatic effect on all perishable windows.

Place an egg in a bowl of water. Fresh eggs sink and lay flat; slightly older eggs stand upright; stale eggs float. This works because eggs lose moisture through their porous shell over time, increasing the air pocket inside. A floating egg indicates significant moisture loss and should be discarded. This test detects age but not pathogen contamination — fresh-looking eggs can still harbor Salmonella.

Pre-washing and cutting speeds meal prep but reduces shelf life: whole produce lasts longer than cut (cut surfaces are exposed to oxygen, moisture, and microbial entry). Cut fruit lasts 3–5 days refrigerated in airtight containers. Cut vegetables last 3–7 days. Whole produce typically lasts 5–14 days depending on type. Balance prep convenience against accelerated spoilage.

Spoilage makes food unpleasant (off smells, mold, slimy texture) due to non-pathogenic bacteria, yeasts, and molds. Food poisoning is caused by specific pathogens (Salmonella, E. coli, Listeria, Campylobacter) that may leave no detectable signs. Spoiled food usually tastes bad enough to spit out; food that causes illness often seems normal. Always follow time and temperature guidelines rather than relying solely on sensory evaluation.