File & Format Converters · Free tool
Kids Clothing Size by Age + Height
Children’s clothing size from age + height + weight. Height is the primary signal.
Updated April 2026
Recommended size
3T
Fits approx. 37-39" (94-99 cm), typical weight ~32 lbs.
By height
3T
By age
3T
Weight read
32 lbs
| Size | Age | Height (in) | Weight (lbs) |
|---|---|---|---|
| Newborn | 0-1 mo | 19-21 | ~8 |
| 0-3M | 0-3 mo | 22-24 | ~12 |
| 3-6M | 3-6 mo | 24-26 | ~16 |
| 6-12M | 6-12 mo | 27-30 | ~20 |
| 12-18M | 12-18 mo | 30-32 | ~24 |
| 18-24M | 18-24 mo | 32-34 | ~27 |
| 2T | 2-3 yr | 34-36 | ~28 |
| 3T | 3-4 yr | 37-39 | ~32 |
| 4T | 4-5 yr | 40-42 | ~37 |
| Size 5 | 5-6 yr | 42-45 | ~45 |
| Size 6 | 6-7 yr | 46-48 | ~55 |
| Size 7 / Youth XS | 7-8 yr | 48-52 | ~60 |
| Size 8 / Youth S | 8-9 yr | 50-54 | ~66 |
| Size 10 / Youth M | 9-11 yr | 54-58 | ~80 |
| Size 12 / Youth L | 11-13 yr | 58-62 | ~100 |
| Size 14 / Youth XL | 13-15 yr | 61-65 | ~120 |
| Size 16 / Adult XS | 14-16 yr | 63-67 | ~130 |
Height is the most reliable input — age is a rough proxy. Some brands run small (Zara, H&M) or large (Carter’s, Old Navy); check reviews and the brand’s own chart before buying.
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What it does
Kids come in all sizes. Use height first (most reliable), age second, weight for checks. From newborn 3M through Youth XL.
Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/kids-clothing-size-by-age" width="100%" height="720" frameborder="0" loading="lazy" title="Kids Clothing Size by Age + Height" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Enter age + height.
- Add weight if helpful.
- Read recommended size.
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