Size chart
Mini Boden baby size chart
Mini Boden publishes 9 baby and toddler sizes, Newborn to 3-4Y, 4Y, by weight and height. Checked against us.boden.com on October 4, 2026.
Size chart
- Newbornup to 9.9 lb
- 0-3Mup to 13.2 lb
- 3-6Mup to 17.6 lb
- 6-9Mup to 20.9 lb
- 9-12Mup to 24.3 lb
- 12-18Mup to 26.5 lb
- 18-24M, 2Ynot published
- 2-3Y, 3Ynot published
- 3-4Y, 4Ynot published
Weight in lb, exactly as Mini Boden publishes it.
Does Mini Boden run small or large?
Runs largeAcross 6 size labels that other brands also use, Mini Boden's published ranges cover bigger babies than the typical chart for the same label, by about a quarter to half a size. A given label should last a little longer.
Based on published size charts compared with other brands. This is not a fit review.
What a typical baby wears in Mini Boden
For a baby in the middle of the WHO growth chart, with room to grow. Your baby's own measurements give a closer answer in the calculator below.
| Age | Typical weight | Typical length | Mini Boden size |
|---|---|---|---|
| Birth | 7.3 lb | 19.5 in | Newborn |
| 3 months | 13.5 lb | 23.9 in | 3-6M |
| 6 months | 16.8 lb | 26.2 in | 3-6M |
| 9 months | 18.9 lb | 28 in | 6-9M |
| 12 months | 20.5 lb | 29.5 in | 9-12M |
| 18 months | 23.3 lb | 32.1 in | 12-18M |
| 2 years | 26.1 lb | 34 in | 18-24M, 2Y |
| 3 years | 31.1 lb | 37.6 in | 2-3Y, 3Y |
The chart as published
The original wording from Mini Boden's chart, size by size.
| Size | Weight | Height or length | Age |
|---|---|---|---|
| Newborn | up to 10lb/ 4.5kg | up to 22"/ 56cm | Not published |
| 0-3M | up to 13lb/ 6kg | up to 24.5"/ 62cm | Not published |
| 3-6M | up to 17.5lb/ 8kg | up to 27"/ 68cm | Not published |
| 6-9M | up to 21lb/ 9.5kg | up to 29"/ 74cm | Not published |
| 9-12M | up to 24lb/ 11kg | up to 31.5"/ 80cm | Not published |
| 12-18M | up to 26.5lb/ 12kg | up to 34"/ 86cm | Not published |
| 18-24M, 2Y | Not published | up to 36"/ 92cm | Not published |
| 2-3Y, 3Y | Not published | up to 38.5"/ 98cm | Not published |
| 3-4Y, 4Y | Not published | up to 41"/ 104cm | Not published |
Notes on this chart. From the Boden US body measurements table. The chart publishes only 'up to' maximums for height and weight. Weight is published only for Newborn through 12-18M. Metric values are the brand's own.
Sources
- Brand's own site: https://us.boden.com/pages/childrens-size-fit-chart
Retrieved October 4, 2026. Brands update their charts, so check the brand's page before a big purchase. This site is not affiliated with Mini Boden.
Calculator
What Mini Boden size on your date?
Start with a birth or due date
Sizes for each brand you pick will appear here, ready for the date you choose.