Nappy size guide
Nappies come in various sizes to fit babies of different weights. Here's a guide to help you choose the right size for your baby.
Size 1
- Weight: 2-5kg (4-11 lbs)
Size 2
- Weight: 3-6kg (7-13 lbs)
Size 3
- Weight: 4-9kg (9-20 lbs)
Size 4
- Weight: 7-18kg (15-40 lbs)
Size 4+
- Weight: 9-20kg (20-44 lbs)
Size 5
- Weight: 11-25kg (24-55 lbs)
Size 5+
- Weight: 13-27kg (29-60 lbs)
Size 6
- Weight: 16kg+ (35 lbs+)
Size 6+
- Weight: 17kg+ (37 lbs+)
How do I know I'm using the right size nappy?
Generally, your baby’s weight will align with the designated nappy weight range, which ensures a snug fit. A proper fit, combined with your diapering technique (go pro!), minimises the chances of leaks.
However, you may sometimes find that your baby’s weight falls between two diaper sizes. In such cases, you have the flexibility to choose the most suitable size.
Many diaper brands include indicators on their packaging that help parents determine when it’s time to move up a size. This is usually necessary when the fasteners start stretching too far or when the diaper seems uncomfortably tight on your baby. Conversely, if the diaper appears loose with noticeable gaps, it may be prone to leaking.
Aldi's Mamia brand offers a very useful PDF size guide.