It’s recommended to change your baby’s disposable diaper every 2-3 hours or whenever it becomes soiled to maintain hygiene and prevent diaper rash. On average, a baby will go through approximately 2,500 to 3,000 diapers within their first year. While you definitely don’t have to buy them all at once, your baby shower is a great time to start a diaper stockpile if you have the space to store them. We break it down by size and age in this [guide to how many baby diapers](https://www.babylist.com/hello-baby/how-many-diapers-babys-first-year) you need, according to Babylist editors.