Food date labels: UK vs US
The key difference is simple: in the UK a use-by date is about safety, while many US food dates are quality or stock-control dates rather than automatic federal safety cutoffs.
UK use-by dates
For England, Wales and Northern Ireland, the Food Standards Agency says a use-by date is about safety: food may be eaten up to midnight on that date when storage instructions have been followed, but should not be eaten, cooked or frozen after it. A sniff test does not override a use-by date.
Food Standards Scotland makes the same safety-versus-quality distinction. It notes that eggs have additional considerations, and that smell or appearance can be useful for suitable best-before foods—not for ignoring a use-by date.
UK best-before dates
Best-before is about quality. It tells you when a product is expected to be at its best, not an automatic safety deadline. The label’s storage directions still matter: a best-before date does not make badly stored refrigerated food safe.
For UK-only detail, see use-by vs best-before.
UK labels in everyday shopping
Use-by dates are common on foods that need refrigeration, such as prepared chilled meals, cooked meats, dairy foods, fish and sandwich fillings. Best-before dates are more common on foods where quality changes gradually, such as biscuits, cereal, tinned goods and dried pasta. Follow the actual product label rather than a general list.
If you will not use a UK use-by product in time, freeze it before its use-by date when the label permits. After that date, FSA guidance says not to eat, cook or freeze it; normal smell and appearance cannot make it safe.
United States: quality and inventory labels
USDA explains that “Best if Used By” or “Best Before” generally signals best quality. “Sell-By” helps a shop manage stock and display. “Freeze-By” is a quality or freezing recommendation. For ordinary foods, “Use-By” is generally a manufacturer quality recommendation, not a federal safety date.
That is why UK use-by logic must not be copied into a US answer. A printed US date alone does not prove a food safe or unsafe; storage history, food type and handling still matter.
Infant formula is the important exception
Federal guidance treats infant formula differently: it carries a Use By date related to nutrient quality and should not be used after that date. The checker has a separate supported formula path; do not apply the ordinary US date-label approach to it.
US labels at a glance
Best if Used By / Best Before concerns expected quality. Sell-By supports stock rotation. Use-By on ordinary US food is generally a manufacturer quality recommendation, and Freeze-By is a quality or freezing recommendation. This does not mean dates never matter: perishable food can become unsafe before or after a printed date if refrigeration or handling was poor.
A refrigerated chicken product needs appropriate cold storage even before its date, while a shelf-stable product after a Best By date may be a quality question. The product, storage history and label direction remain important.
UK vs US at a glance
UK use-by is a safety date for food stored as instructed; after it, the FSA says do not eat, cook or freeze that food. UK best-before is about expected quality. In the United States, Best if Used By / Best Before, Sell-By and Freeze-By generally communicate quality, stock rotation or freezing advice. An ordinary-food Use-By date is generally not the same federal safety deadline as a UK use-by date.
The practical conclusion is not that US dates do not matter. A refrigerated food can become unsafe before any printed date if its storage history is poor, and a printed date cannot replace the product’s refrigeration or after-opening instructions. Infant formula is an important US exception: its Use By date should be followed.
Using labels at home
Check the whole pack, not just the date. “Keep refrigerated”, “consume within a stated number of days after opening” and freezing instructions can affect what to do next. Record or remember the opening date when a product has an after-opening instruction, and keep it at the temperature the label requires.
For leftovers, the original ingredient’s date is not a new leftover deadline. Use the relevant refrigerator and reheating guidance instead. If food was left out, the handling history matters alongside its label: see food left out after refrigeration or food left out overnight.
When to use the checker
Use it when you know the country, date-label type, whether the date has passed and the supported food class. It cannot decide that every product after a US date is safe, or replace storage instructions. If food also spent time out of refrigeration, see food left out after refrigeration.
Official sources used
United Kingdom
Food Standards Agency: Best before and use-by dates Food Standards Scotland: Use-by and best-before dates
United States
Related guidance
Read the US-only date-label guide or check the date on your food.
Use the checker for your situation
This page gives general UK and US guidance. Check your food for the situations Safe to Eat? currently covers.
Sources and scope
Page reviewed: 16 September 2026. UK and US source sets are displayed separately above; this is a page review date, not a single source-pack freshness date.
This resource is based on UK and US food-safety guidance and does not replace the checker’s personalised questions. Read how the checker works and see the official sources.