How long does 2kg turkey take to cook?

As a general guide, in an oven preheated to 180C (350F, gas mark 4): allow 45 minutes per kilogram, plus 20 minutes, for a turkey under 4.5kg. allow 40 minutes per kilogram for a turkey that’s between 4.5kg and 6.5kg. allow 35 minutes per kilogram for a turkey of more than 6.5kg.