Diaper Cost Calculator
How many diapers your baby actually needs each month, which size fits, and what it honestly costs per diaper.
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kg
a day
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Your baby needs about
diapers per month
What fits your baby
Wipes
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How this works
- •These are estimates based on typical usage, not a prediction. Every baby is different, and how many diapers you use will vary from day to day.
- •Usage falls as your baby grows. A newborn may need 8–12 a day; a two-year-old around 4–6. Your monthly cost drops over time.
- •We rank by real cost per diaper — pack price divided by pieces. Bigger packs are not always cheaper per diaper, so we show the actual figure rather than claiming a saving.
- •Weight ranges overlap between sizes. If your baby is near the top of a range, they will move up soon — worth considering before buying several packs.
Usage figures adapted from public health guidance. Last reviewed: 3 weeks ago.
Comparing 7 diaper options from 1 brand we stock.