What Is The Size Chart For Diapers?

When it comes to diaper sizes, it’s crucial to have a clear understanding of how they are determined and when to transition your little one to a different size. Diaper sizes are typically based on the weight of the baby, as well as their age and stage of development.

Size 1 Diapers

For average-size baby boys, the transition to Size 1 diapers typically occurs around four weeks of age. On the other hand, baby girls typically make the switch to Size 1 diapers around six weeks old. It’s essential to monitor your baby’s weight and comfort to ensure they are ready for this transition.

Size 2 Diapers

As babies grow and develop, they will eventually outgrow Size 1 diapers and move on to Size 2 diapers. This transition usually happens for baby boys around three to four months of age, while baby girls tend to make the switch between four to five months. Keep an eye on your baby’s comfort level and diaper fit to know when it’s time for this change.

Size 3 Diapers

Size 3 diapers are designed for more active babies who need extra protection and absorbency. Most babies typically transition to Size 3 diapers around six to seven months of age. It’s important to consider your baby’s mobility and development when deciding to move up to this diaper size.

Size 4 Diapers

By the time your baby reaches nine to twelve months old, they may be ready for Size 4 diapers. These diapers offer enhanced leak protection and comfort for more active infants who are exploring their world. Pay attention to your baby’s movements and diaper capacity to determine if Size 4 is the right fit.

Size 5 Diapers

As your little one continues to grow and become more independent, Size 5 diapers may be the next step. Babies typically transition to Size 5 diapers around a year and a half to two years old. These diapers provide advanced leak protection and flexibility for toddlers on the move.

What Is The Size Chart For Diapers?

Size 6 Diapers

For toddlers who are approaching the potty-training stage, Size 6 diapers are a great option. Most children make the switch to Size 6 diapers between two to three years old. These diapers offer superior absorbency and comfort to support toddlers as they transition out of diapers.

Photo of author

Nancy Sherman

Nancy Sherman has more than a decade of experience in education and is passionate about helping schools, teachers, and students succeed. She began her career as a Teaching Fellow in NY where she worked with educators to develop their instructional practice. Since then she held diverse roles in the field including Educational Researcher, Academic Director for a non-profit foundation, Curriculum Expert and Coach, while also serving on boards of directors for multiple organizations. She is trained in Project-Based Learning, Capstone Design (PBL), Competency-Based Evaluation (CBE) and Social Emotional Learning Development (SELD).