Question: how many size 1 diapers do i need for twins?
Answer: Twin Diaper Usage So your newborn twins will need about 10 diapers X 30 days X 2 babies = at least 600 diapers for the first month. After the first month, diaper consumption goes down to about 8 diapers per day. You'll need 8 diapers X 30 days X 2 babies = at least 480 diapers per month for a few more months.