Fridge-Thawing a Turkey: A Day per 5 Pounds, by Canada's Rule

A frozen turkey picked up the weekend before Thanksgiving can seem to leave plenty of time. For a large bird, that weekend is already the deadline. Refrigerator thawing is measured in days rather than hours, and the number of days depends on weight. In 2026, Thanksgiving falls on Thursday, Nov. 26, the fourth Thursday of the month. The rates used here come from Health Canada and the UK Food Standards Agency. Counting back from that date shows which day the turkey has to move from the freezer to the fridge, and how much slack the plan leaves if something runs late.

Thaw days by weight, counted back from Nov. 26

Health Canada’s rate reduces to one division. Divide your turkey’s weight in pounds by 5, and the result is the number of days it needs in the fridge. Put another way, every pound adds 4.8 hours. Round any fraction up to the next whole day, then count that many days back from Thursday.

Hours follow Health Canada’s refrigerator rate of 24 hours per 5 lb (2.5 kg). Every row uses the same rule: days rounded up to a whole number, the bird in the fridge by the morning of the date shown, and the thaw finished by Thursday morning, Nov. 26, 2026, at the latest.

Rounding up is where the margin comes from, and the amount differs from row to row. A 12-pound bird needs 57.6 hours, so a three-day thaw from Monday morning leaves 14.4 hours spare. A 14-pound bird needs 67.2 hours, and the same Monday start leaves only 4.8 hours. Where the hours land on a whole day, as at 10 and 20 pounds, there is no margin at all. A 96-hour thaw that starts Sunday morning ends Thursday morning, the day of the meal.

Starting one day earlier adds a cushion, and the slow end of the UK range points the same way for heavy birds. Converted to pounds, the UK rate tops out at about 5.4 hours per pound. At that pace, a 20-pound turkey needs about 108 hours, or 4.5 days, which moves the start to Saturday, Nov. 21. Under Health Canada’s rate, the same Saturday start has the bird thawed by Wednesday, Nov. 25. The cost shows up at the other end. The UK Food Standards Agency says that once food is defrosted, it should be cooked and eaten within 24 hours and not refrozen. A one-day head start sits at the edge of that window; a longer one falls outside it.

Where the 24-hour figure comes from

The rate appears on two Health Canada pages. Its guide to safely defrosting foods says: “Defrost poultry 24 hours for each 2.5 kg (5 pounds) of bird.” Its poultry safety page gives the same figure for thawing in the refrigerator. Because the rule is a flat rate, it scales in a straight line: twice the weight means twice the time.

The UK’s Food Standards Agency states the task in kilograms: “In a fridge, allow around 10-12 hours per kg.” It adds that a whole turkey can take “between 3 to 5 days to properly defrost.” The agency also sets conditions for the fridge itself: keep it at “5°C or below,” and defrost on the bottom shelf.

Side by side, the two rates are closer than their units suggest. Health Canada pairs 5 pounds with 2.5 kg, a rounded match, since 5 pounds is a little under 2.5 kg. Measured against the pound figure, the Canadian rule works out to about 10.5 hours per kilogram, inside the UK’s 10-to-12-hour range. Going the other way, the UK range comes to about 4.5 to 5.4 hours per pound, with Health Canada’s 4.8 hours in between. The two agencies describe close to the same pace; the UK range only allows a little more time at its upper end.

The UK’s 3-to-5-day range for a whole turkey also lines up with the Canadian rate. At one day per 5 pounds, three days covers a 15-pound bird and five days covers a 25-pound bird.

Cold water and the microwave, but not the counter

When the fridge schedule has already slipped, Health Canada lists cold water as an alternative. The turkey goes into leak-proof plastic and stays fully submerged. The instruction is to “change the water every 30 minutes to keep the surface cold until it is thawed.” The aim stated there is a cold surface, which is why the water is replaced on a fixed clock rather than left to sit.

Health Canada does not attach a per-pound time to cold-water thawing, so there is no official figure to write on a calendar. What the method does fix is the workload. A water change every 30 minutes means someone has to stay near the sink for the entire thaw.

The microwave is the narrowest option. Health Canada says to use it only for meat that will be cooked immediately. Its defrosting page also says: “Cook the meat as soon as it’s defrosted.” Under that instruction, a quick thaw is a same-day plan. The bird goes from the sink or the microwave straight to the oven, rather than back into the fridge to wait for Thursday.

Health Canada’s instruction on the counter is brief: “Don’t let your food defrost on the counter.” The other two methods are built around cold. A fridge at 5°C (about 40°F) or below keeps the bird cold as it thaws, and the water changes keep its surface cold in the sink. A turkey left out at room temperature has neither safeguard.

What can move these dates

The table rests on a single rate, and both agencies frame their figures as estimates for a home fridge. Neither promises a fully thawed bird at an exact hour.

The calendar side changes every year. Thanksgiving is the fourth Thursday of November, so the specific dates here hold only for 2026. The counting method carries over unchanged.