How long does milk keep after opening?

United States Reviewed May 2026 Method v1.1 EU/UK: package use-by dates govern

Keep opened milk refrigerated at 40 °F (4 °C) or below and use it within about a week of opening — sooner if the package says so. Milk can be frozen at best quality for about 3 months, with some texture separation on thawing.

The printed date is a manufacturer-controlled date: EU/UK use-by dates on milk are safety limits. The week-after-opening figure is general US guidance; the package instruction always wins if stricter.

Pantry

Not safe

Max 2 h at room temperature (opened, fresh milk)

Refrigerator ≤ 40 °F (4 °C)

5–7 days

Safety guidance · From opening; package date governs if sooner

Freezer 0 °F

3 months

Best quality · safe indefinitely

Calculate a date for milk

Starting event Event date

Pick an event and date for a labeled result — never a bare “expiry date.”

Can I freeze it?

Safe, with quality loss

Milk can be frozen safely; expect separation and a slightly grainy texture after thawing. Best quality about 3 months.

Thawed milk is fine for cooking, baking, and smoothies; some people find it acceptable for drinking after a good shake. Higher-fat milk separates more.

Prepare & portion. Pour off a little to leave headspace — milk expands when frozen. Freeze in usable portions.

Package. The original plastic bottle (with headspace) or rigid freezer containers.

Thaw & use. Thaw in the refrigerator (a liter takes about a day) and shake well before use.

Thawing and post-thaw handling

Thaw in the refrigerator, never at room temperature. Shake well; use within 3–4 days of thawing.

Refreezing

Do not refreeze thawed milk. The general rules are in the refreezing guide and the Refreezing Decision tool.

Common mistakes

Storing milk in the refrigerator door — the warmest spot in the appliance.
Treating a US “best if used by” date as a hard safety limit, or an EU “use by” as a suggestion.
Freezing a full glass bottle — it can shatter as the milk expands.

Package exception: The printed date and after-opening instruction govern; EU/UK use-by is a safety limit.

Calculate a date for this food Open in Can I Freeze It? Make a label

Source-to-claim map
~1 week refrigerator guidance; 3 month freezer quality target — FoodSafety.gov — Cold Food Storage Chart · EU use-by dates are safety limits — EFSA — Food Date Labelling · All sources · Change history · Report a correction