おむつ代の計算：1日・1か月の枚数と費用
月齢（新生児〜3歳）から1日のおむつの枚数を見積もり、1か月またはこの先12か月の枚数とパック数、1枚あたりの価格、1か月のおむつ代がわかります。
How many diapers do newborns use per day?
Often around 10–12 per day in the first month, but it varies.
When does diaper use start to decrease?
Usually after the newborn phase, then gradually over the first year.
How can I save money on diapers?
Compare cost per diaper, buy larger packs when they’re cheaper per unit, and stock up during promos in the right size.
Do boys and girls need different diaper counts?
Not typically. Routine and baby’s digestion matter more than sex.
What about nighttime diapers?
They can reduce overnight changes and leaks, which can lower total “extra” diapers used at night.
When do most babies start potty training?
Many start sometime in toddlerhood, but timelines vary a lot.
Should I size up early to save money?
Sizing up too early can cause leaks and increase usage. Fit usually saves more than “bigger size”.