Kids Clothing Size Chart
What size does my child wear? Find the right fit using our complete size charts for babies, toddlers, and kids.
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Measure Baby's Growth Accurately
Soft, flexible measuring tape designed for accurately tracking your baby's head circumference and length.
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Shopping for kids clothes can be confusing. A 2-year-old might wear anything from 18M to 4T depending on their build. That's why measurements matter more than age.
Measure Height
Stand against a wall without shoes for accurate height
Check Weight
Weight is especially important for baby sizes
Consider Build
Slim vs. sturdy builds affect fit significantly
Pro Tip
When in doubt, size up. Kids grow fast, and slightly roomy clothes last longer. It's easier to roll up sleeves than to return clothes that are already too small.
Baby Sizes (0-24 Months)
Baby clothing is sized by age in months, but weight is often the best indicator for fit.
| Size | Age | Weight | Height |
|---|---|---|---|
| Preemie | Preemie | Up to 6 lbs | Up to 17" |
| Newborn | 0 months | 6-9 lbs | 17-21" |
| 0-3M | 0-3 months | 9-12 lbs | 21-24" |
| 3-6M | 3-6 months | 12-16 lbs | 24-26" |
| 6-9M | 6-9 months | 16-20 lbs | 26-28" |
| 9-12M | 9-12 months | 20-24 lbs | 28-30" |
| 12-18M | 12-18 months | 24-28 lbs | 30-32" |
| 18-24M | 18-24 months | 28-30 lbs | 32-34" |
Toddler Sizes (2T-5T)
The "T" stands for toddler. These sizes are designed for kids who are potty trained (slimmer diaper area) and more active.
| Size | Age | Weight | Height |
|---|---|---|---|
| 2T | 2 years | 29-32 lbs | 33-35" |
| 3T | 3 years | 32-35 lbs | 35-38" |
| 4T | 4 years | 35-39 lbs | 38-41" |
| 5T | 5 years | 39-45 lbs | 41-44" |
24M vs. 2T: What's the Difference?
24 Months:
- • Designed for babies in diapers
- • More room in the diaper area
- • May have snap closures
2T:
- • Designed for potty-trained toddlers
- • Slimmer fit, no diaper room
- • Pull-on styles for independence
Kids Sizes (4-16)
After toddler sizes, kids transition to XS-XL or numerical sizes. Height becomes the primary sizing factor.
| Size | Age | Weight | Height |
|---|---|---|---|
| XS (4-5) | 4-5 years | 35-45 lbs | 40-44" |
| S (6-7) | 6-7 years | 45-58 lbs | 44-50" |
| M (8-10) | 8-10 years | 58-77 lbs | 50-55" |
| L (10-12) | 10-12 years | 77-92 lbs | 55-59" |
| XL (14-16) | 14-16 years | 92-110 lbs | 59-63" |
International Size Conversion
Shopping from European or UK brands? Use this conversion chart. EU sizes are based on height in centimeters.
| US Size | EU Size | UK Size |
|---|---|---|
| Newborn | 50 | Newborn |
| 0-3M | 56-62 | 0-3M |
| 3-6M | 62-68 | 3-6M |
| 6-9M | 68-74 | 6-9M |
| 9-12M | 74-80 | 9-12M |
| 12-18M | 80-86 | 12-18M |
| 18-24M | 86-92 | 18-24M |
| 2T | 92 | 2-3 years |
| 3T | 98 | 3-4 years |
| 4T | 104 | 4-5 years |
| 5 | 110 | 5-6 years |
| 6 | 116 | 6-7 years |
| 7 | 122 | 7-8 years |
| 8 | 128 | 8-9 years |
| 10 | 140 | 9-10 years |
| 12 | 152 | 11-12 years |
Brand Sizing Guide
Different brands fit differently. Here's what parents report about popular kids clothing brands:
Carter's / Osh Kosh
Runs true to size. Known for consistent sizing.
Gap / Old Navy
Runs slightly large. Good for between-size kids.
Target (Cat & Jack)
Runs true to size with adjustable waists.
H&M
Runs small. Size up one size.
Zara Kids
Runs very small. Size up 1-2 sizes.
Primary
Runs true to size. Great for slim kids.
Hanna Andersson
Uses cm-based sizing. Check their chart.
Amazon Essentials
Runs slightly small. Size up if in doubt.
Clothing Fit Tips by Type
Tops & Shirts
- Shoulder seams should hit at the shoulder
- Sleeves should reach wrist bone
- Check neck opening isn't too tight
- Room to move arms freely
Pants & Bottoms
- Waist should fit without a belt
- Length should hit top of shoe
- Adjustable waists are great for slim kids
- Check there's room to sit comfortably
Pajamas
- Snug fit is required for fire safety
- Don't size up for PJs (they're meant to be fitted)
- Cotton shrinks - account for this
- Footed PJs: allow room for toe wiggle
Outerwear
- Size up for layering underneath
- Sleeves should cover wrists
- Consider growth - buy end of season
- Check movement with arms raised
Frequently Asked Questions
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