Defrost Time By Weight Calculator

Fridge: ~5 hr per lb. Cold water: 30 min per lb (change water every 30 min). Microwave: not recommended.

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Result

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How to use this calculator

  • Enter weight.
  • Pick method based on time available.
  • Cook immediately if water-defrosted.

About this calculator

USDA: meat must defrost at ≤40°F to prevent bacterial growth. Fridge is the slowest but safest — 5 hr/lb minimum, more like 24 hr for 5-lb chicken. Cold water (30 min/lb, water changed every 30 min) is fast and safe. Cold running water (15 min/lb) is fastest. Microwave defrost begins partial cooking — use only if cooking immediately. Never thaw at room temp (above 40°F = bacterial multiplication zone).

Frequently asked

Can I refreeze defrosted meat?+
Fridge-defrosted: yes (within 1-2 days, raw). Water-defrosted: only if cooked first. Quality drops with each freeze cycle.
Why not room temp?+
Outer layers warm to >40°F before center thaws. Bacteria multiply on the outside while waiting for inside.
Does brining count as defrost?+
Yes — brining at fridge temp doubles as defrost for small cuts. Plan brine + defrost as one step.
Microwave defrost — really bad?+
It works but creates partially cooked spots. Cook immediately; never refrigerate microwaved-defrost meat.
Frozen meat in slow cooker — safe?+
No — it stays in the danger zone too long. Defrost first.

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