Last Updated 14 Feb 2014

Turkey Cooking Times 

including Gas Mark & Electric Temperature Equivalents

Click here to Download a copy of our Turkey Cooking Times

The turkey (14 lb/6.5 kg oven-ready weight) went into the oven, pre-heated to gas mark 7, 425F (220C), at 8.15am. The heat was lowered to gas mark 3, 325F (170C) at 8.55am. The foil came off and the heat was turned up to gas mark 6, 400F (200C) at 12.30pm. Then, with lots of basting, it was cooked by 1.15pm and served by 2pm.

Pre-heat the oven to gas mark 7, 425F (220C).

For an 8-10 lb (3.5-4.5 kg) turkey:
Cook for 30 minutes then reduce the temperature to gas mark 3, 325F (170C) and cook for a further 21/2-3 hours. Then give it a final 30 minutes (uncovered) at gas mark 6, 400F (200C).

For a 12-14 lb (5.5-6.5 kg) turkey:
Cook for 40 minutes then reduce the temperature to gas mark 3, 325F (170C) and cook for a further 3-31/2 hours. Then give it a final 30 minutes (uncovered) at gas mark 6, 400F (200C).

For a 15-20 lb (6.75-9 kg) turkey:
Cook for 45 minutes then reduce the temperature to gas mark 3, 325F (170C) and cook for a further 4-5 hours. Then give it a final 30 minutes (uncovered) at gas mark 6, 400F (200C).

To tell if the turkey is cooked, pierce the thickest part of the leg with a skewer then press the skewer against the leg to see if the juices run clear without any trace of pink if the juices are clear, the turkey is cooked.

Gas Mark & Electric Cooking Temperature Equivalents

Degrees Fahrenheit Degrees Celsius Gas Mark Description
225

110

1/4 Very slow
250 120/130 1/2 Very slow
275 140 1 Slow
300 150 2 Slow
325 160/170 3 Moderate
350 180 4 Moderate
375 190 5 Moderately hot
400 200 6 Moderately hot
425 220 7 Hot
450 230 8 Hot
475 240 9 Very hot
 

National Turkey Federation Roasting Guidelines for a Fresh or Thawed Turkey
Roast in a 325 degrees F  ( Gas Mark 3) Conventional Oven on the Lowest Oven Rack

 
 

Weight

Unstuffed Turkey

Stuffed Turkey

 
  8 to 12 pounds 2 3/4 to 3 hours 3 to 3 1/2 hours  
  12 to 14 pounds 3 to 3 3/4 hours 3 1/2 to 4 hours  
  14 to 18 pounds 3 3/4 to 4 1/4 hours 4 to 4 1/4 hours  
  18 to 20 pounds 4 1/4 to 4 1/2 hours 4 1/4 to 4 3/4 hours  
  20 to 24 pounds 4 1/2 to 5 hours 4 3/4 to 5 1/4 hours  
  24 to 30 pounds  5 to 5 1/4 hours 5 1/4 to 6 1/4 hours  
         

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