Which diaper size fits my baby?
Enter your baby's weight and age — we recommend the right diaper size and instantly show the cheapest current deal for it.
Manufacturers size diapers primarily by weight.
For orientation only — weight decides.
Our recommendation
Most likely Size 3
Babies from 5–9 kg usually fit Size 3.
Cheapest current deal
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Diaper size table (weight & age)
| Size | Weight | Age (months) |
|---|---|---|
| Newborn / 1 | 2–5 kg | 0–1 |
| 2 | 3–6 kg | 1–4 |
| 3 | 5–9 kg | 3–9 |
| 4 | 9–14 kg | 6–18 |
| 5 | 11–16 kg | 12–24 |
| 6 | 15–28 kg | 18–36 |
| 7 | 17+ kg | 30+ |
The right diaper size decides whether the diaper seals and your baby feels comfortable. Brands like Pampers, Lillydoo and babylove size by weight, not age — a 6-month-old can fit size 3 or 4 depending on weight. If the diaper pinches at the legs or leaks at night, move up a size. Our finder recommends the right size by weight and instantly shows today's cheapest price at dm, Rossmann or Müller.