The singer, who recently welcomed his first child with partner David Furnish, said that fathering baby Zachary was a dream come true.
He told WENN: "It's fantastic! I love the smell of nappies. It's been the most wonderful thing that's probably ever happened to me after meeting David.
"Surprisingly it's been very relaxing because this little soul that you're feeding and you're changing and you're bathing and you're telling bedtime stories to is a blank canvas, and all it needs is love and nurturing, and it's just the most wonderful feeling."
Last week, John said that his emotions following his son's birth were "indescribable".