Size chart
babyGap baby size chart
babyGap publishes 9 baby and toddler sizes, Up to 7 lb to 4Y, by weight and height. Checked against gap.com on October 4, 2026.
Size chart
- Up to 7 lbup to 6.6 lb
- 0-3M6.6 to 11 lb
- 3-6M11 to 17.6 lb
- 6-12M17.6 to 22 lb
- 12-18M22 to 26.5 lb
- 18-24M26.5 to 30.9 lb
- 2Y30.9 to 33.1 lb
- 3Y33.1 to 35.3 lb
- 4Y35.3 to 39.7 lb
Weight in lb, exactly as babyGap publishes it.
Does babyGap run small or large?
True to sizeAcross 8 size labels that other brands also use, babyGap's published ranges sit close to the middle of the pack. The same label covers about the same baby.
Based on published size charts compared with other brands. This is not a fit review.
What a typical baby wears in babyGap
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 | babyGap size |
|---|---|---|---|
| Birth | 7.3 lb | 19.5 in | 0-3M |
| 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 | 6-12M |
| 12 months | 20.5 lb | 29.5 in | 12-18M |
| 18 months | 23.3 lb | 32.1 in | 18-24M |
| 2 years | 26.1 lb | 34 in | 2Y |
| 3 years | 31.1 lb | 37.6 in | 3Y |
The chart as published
The original wording from babyGap's chart, size by size.
| Size | Weight | Height or length | Age |
|---|---|---|---|
| up to 7 lbs | up to 7 lbs / up to 3 kg | up to 18 in / up to 46 | Not published |
| 0 - 3 mos | 7 - 12 lbs / 3 - 5 kg | 18 - 23 in / 46 - 58 cm | Not published |
| 3 - 6 mos | 12 - 17 lbs / 5 - 8 kg | 23 - 27 in / 58 - 69 cm | Not published |
| 6 - 12 mos | 17 - 22 lbs / 8 - 10 kg | 27 - 29 in / 69 - 74 cm | Not published |
| 12 - 18 mos | 22 - 27 lbs / 10 - 12 kg | 29 - 31 in / 74 - 79 cm | Not published |
| 18 - 24 mos | 27 - 30 lbs / 12 - 14 kg | 31 - 33 in / 79 - 84 cm | Not published |
| 2 yrs | 30 - 33 lbs / 14 - 15 kg | 33 - 36 in / 84 - 91 cm | Not published |
| 3 yrs | 33 - 36 lbs / 15 - 16 kg | 36 - 39 in / 91 - 99 cm | Not published |
| 4 yrs | 36 - 40 lbs / 16 - 18 kg | 39 - 42 in / 99 - 107 cm | Not published |
Notes on this chart. The brand publishes imperial and whole-number metric values; the metric values are used as published, so they are coarser than the imperial ones. Toddler sizes are labeled 2 yrs, 3 yrs, and 4 yrs. The brand states that measurements up to 2 years are taken with a diaper on.
Sources
- Brand's own site: https://www.gap.com/Asset_Archive/AllBrands/sizeChart/v3/division-chart.html?division=baby
- Brand's own site: https://www.gap.com/Asset_Archive/AllBrands/sizeChart/v3/data/gap/current/babyApparel.js
Retrieved October 4, 2026. Brands update their charts, so check the brand's page before a big purchase. This site is not affiliated with babyGap.
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