Size chart
Kate Quinn baby size chart
Kate Quinn publishes 9 baby and toddler sizes, Newborn to 4T, by weight and height. Checked against katequinn.com on October 4, 2026.
Size chart
- Newborn5.5 to 8 lb
- 0-3M8.5 to 14.5 lb
- 3-6M15 to 18 lb
- 6-12M18.5 to 21 lb
- 12-18M21.5 to 24 lb
- 18-24M24.5 to 27 lb
- 2Tnot published
- 3Tnot published
- 4Tnot published
Weight in lb, exactly as Kate Quinn publishes it.
Does Kate Quinn run small or large?
Runs largeAcross 9 size labels that other brands also use, Kate Quinn'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 Kate Quinn
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 | Kate Quinn size |
|---|---|---|---|
| Birth | 7.3 lb | 19.5 in | Newborn |
| 3 months | 13.5 lb | 23.9 in | 0-3M |
| 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 | 6-12M |
| 18 months | 23.3 lb | 32.1 in | 12-18M |
| 2 years | 26.1 lb | 34 in | 18-24M |
| 3 years | 31.1 lb | 37.6 in | 3T |
The chart as published
The original wording from Kate Quinn's chart, size by size.
| Size | Weight | Height or length | Age |
|---|---|---|---|
| NB | 5.5 - 8 lbs | 17.5 - 20 in | Not published |
| 0-3M | 8.5 - 14.5 lbs | 21 - 24.5 in | Not published |
| 3-6M | 15 - 18 lbs | 25 - 27 in | Not published |
| 6-12M | 18.5 - 21 lbs | 27.5 - 30 in | Not published |
| 12-18M | 21.5 - 24 lbs | 31 - 33 in | Not published |
| 18-24M | 24.5 - 27 lbs | 33 - 35 in | Not published |
| 2T | Not published | 35 - 37 in | Not published |
| 3T | Not published | 37.5 - 39.5 in | Not published |
| 4T | Not published | 40 - 42 in | Not published |
Notes on this chart. Weight is published only for NB to 18-24M. From 2T up the brand lists height with chest, waist, and hip instead of weight. The brand recommends sizing up if in doubt.
Sources
- Brand's own site: https://katequinn.com/pages/sizing-care-fabric
Retrieved October 4, 2026. Brands update their charts, so check the brand's page before a big purchase. This site is not affiliated with Kate Quinn.
Calculator
What Kate Quinn size on your date?
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