Roupa Bebê Tamanho
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
This baby clothes size calculator helps you choose the ideal size based on the baby's age in months and their length in centimeters. It uses a standard table to convert the age in months to the corresponding size in centimeters, considering the average growth of a baby. Keep in mind that each baby grows differently, so this table serves only as a guide.
The calculator works based on a simple formula: it relates the baby's age in months to their length in centimeters, according to the standard table. For example, a baby from 0 to 3 months usually wears size M (62-68 cm), while a baby from 4 to 6 months wears size G (68-74 cm).
When to use this calculator? Whenever you need to buy clothes for a baby and you're unsure about the size. It's especially useful for parents and caregivers who want to avoid size mistakes and ensure the clothes are comfortable and suitable for the baby.
Remember to always check the specific measurements of each brand and clothing model, as they may vary slightly. Additionally, consider the baby's growth when choosing the size to avoid clothes becoming too small quickly.
Frequently asked questions
How does the baby clothes size table work?
The table relates the baby's age in months to their length in centimeters, providing the corresponding clothing size.
What are the most common baby clothes sizes?
The most common sizes are P (0-3 months), M (0-3 months), G (4-6 months) and GG (7-9 months), but they vary by brand.
Can I use this calculator for any clothing brand?
Yes, but it's recommended to check the specific measurements of each brand, as they may vary slightly.
What if the baby is premature or has atypical growth?
In this case, it's recommended to consult a pediatrician for personalized guidance on the appropriate clothing size.
Can I use this calculator for baby clothes up to what age?
Up to about 2 years, after that children's clothing measurements change and may no longer follow the standard table.