We can also form a simple proportion to calculate the result: To convert 57.6 pounds into kilograms we have to multiply 57.6 by the conversion factor in order to get the mass amount from pounds to kilograms. The conversion factor from pounds to kilograms is 0.45359237, which means that 1 pound is equal to 0.45359237 kilograms: 1 lb = 0.45359237 kg.But remember, these are average figures for large numbers of women so just because your weight gain pattern is different, it doesn't mean anything is wrong.
Third trimester: around 1 pound per week ~ (12lb) over the last three months.
