A 20 lb turkey needs about 5 full days to defrost safely in the fridge.

How long to defrost a 20 lb turkey in the fridge

Most food-safety guides recommend allowing about 24 hours in the refrigerator for every 4–5 pounds of turkey. For a 20 lb bird, that works out to 5 days in the fridge before you plan to cook. Many turkey producers and cooking sites list 20–24 lb turkeys as needing 5–6 days of refrigerator thaw time, so starting a little earlier is safer if your fridge runs cold.

Simple rule of thumb

  • Under 12 lb: 1–3 days in the fridge.
  • 12–16 lb: 3–4 days in the fridge.
  • 16–20 lb: 4–5 days in the fridge.
  • 20–24 lb: 5–6 days in the fridge.

If you’re short on time, cold-water thawing takes about 30 minutes per pound , so a 20 lb turkey would need about 10 hours fully submerged in cold water, changing the water every 30 minutes, then cooked right away.

Bottom line: For a 20 lb turkey, put it in the fridge at least 5 days before you plan to roast, and 6 days ahead is even better for peace of mind.

Information gathered from public forums or data available on the internet and portrayed here.