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All brandsOshKosh B'Gosh Size Charts
Complete sizing guide for OshKosh B'Gosh with measurements, fit tips, and global conversions
OshKosh B'Gosh offers sizing across boys, girls. Use the tabs to filter by category, or scroll to see all available charts with measurements and conversions.
Fit Summary
OshKosh B'Gosh offers reliable sizing across their kids' collections. Use age and height as primary guides, then check chest and waist measurements for best fit.
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How each brand sizes relative to OshKosh B'Gosh, curated by the SizeHub editor.
Last updated: Q3 2026 · Reviewed quarterly by JC, SizeHub editor
Kids' Sizing
Clothing — Babies & Toddlers (0–3 Years)
| Size | Age | Height (in) | Weight (lbs) |
|---|---|---|---|
| NB | 0 mo | up to 21.5 | 5-8 |
| 0-3M | 0-3 mo | 21.5-24 | 8-12 |
| 3-6M | 3-6 mo | 24-26.5 | 12-16 |
| 6-9M | 6-9 mo | 26.5-28.5 | 16-20 |
| 12M | 9-12 mo | 28.5-30 | 20-24 |
| 18M | 12-18 mo | 30-32 | 24-28 |
| 24M | 18-24 mo | 32-33.5 | 28-30 |
Clothing — Children (4–7 Years)
| Size | Age | Height (in) | Chest (in) | Waist (in) |
|---|---|---|---|---|
| 3T | 3 | 36-38.5 | 20-20.5 | 20-20.5 |
| 4T | 4 | 38.5-41 | 21-21.5 | 20.5-21 |
| 5 | 5 | 41-44 | 22-22.5 | 21-21.5 |
| 6 | 6 | 44-46.5 | 23-23.5 | 22-22.5 |
| 6X/7 | 6-7 | 46.5-50 | 24-25 | 22.5-23 |
Clothing — Youth & Teens (8–16 Years)
| Size | Age | Height (in) | Chest (in) | Waist (in) |
|---|---|---|---|---|
| S (8) | 7-8 | 50-53 | 26-27 | 23-24 |
| M (10-12) | 9-10 | 53-58 | 28-30 | 24-26 |
| L (14-16) | 11-13 | 58-64 | 31-33 | 26-28 |
| XL (18-20) | 14-16 | 64-68 | 34-36 | 29-31 |
Shopping Tips
When between sizes, size up for comfort. Always compare your measurements to the chart rather than relying on age or letter sizes alone.
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Frequently Asked Questions
Does OshKosh B'Gosh run true to size?
OshKosh B'Gosh generally runs true to size, though some styles may vary. Always check measurements.
How do I find my OshKosh B'Gosh size?
Use the size chart above. Measure yourself or your child and compare against the listed dimensions.
What if I'm between sizes?
We recommend sizing up for a more comfortable fit, especially for growing children.
How to Measure
Chest
Measure around the fullest part of your chest, keeping the tape horizontal.
Waist
Measure around your natural waistline, keeping the tape comfortably loose.
Hips
Stand with feet together and measure around the fullest part of your hips.