Everyday Life Calculators

Diaper Usage Calculator

Estimate how many diapers, packs and dollars a baby will go through over a set number of days.

Total diapers needed —

Packs to buy —

Total cost —

About the Diaper Usage Calculator

Newborns and infants can go through a surprising number of diapers per day, so this calculator helps estimate how many packs to keep stocked and what it will cost over a given stretch of time.

Formula: Total Diapers = Diapers per Day × Days; Packs Needed = Total Diapers ÷ Diapers per Pack, rounded up.

Newborns often use 8-12 diapers a day, tapering to 6-8 as babies get older — adjust the daily usage figure as your child grows.