Age is only a rough guide. Two five-year-olds can be several sizes apart. Use the age table to get close, then measure.
In this guide
Typical sizes by age
| Age (approx.) | Typical Crocs size | Notes |
|---|---|---|
| 1–2 years | C4–C6 | New walkers do best in secure, flexible shoes |
| 2–3 years | C6–C8 | Strap behind the heel |
| 3–5 years | C8–C11 | Growth spurts are common |
| 5–7 years | C11–C13 | Check every few months |
| 7–10 years | J1–J3 | Big-kid sizes |
| 10–12+ years | J3–J6 | J4–J6 overlap M4/W6 to M6/W8 |
Crocs Kids’ Classic Clog
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Print-and-measure method
- Print this page or grab a sheet of paper and a ruler.
- Have your child stand on the paper with their weight on that foot.
- Mark the back of the heel and the tip of the longest toe.
- Measure in inches or cm. Do both feet and use the larger.
- Compare with the size chart on the product page you’re buying.
How much growing room?
About a thumb’s width at most. Too much room makes kids trip and grip with their toes. If you’re between sizes, choose the larger and keep the heel strap back.
When kids move to adult sizes
Big-kid J4, J5 and J6 overlap the smallest unisex adult sizes. For teens, see Crocs for teens and the full size chart.
Check Kids’ Classic Clog sizes
Compare size availability at both stores.
More: best Crocs for kids · Crocs for toddlers.
FAQ
What size Crocs does a 2 year old wear?
Often around C6–C8, but measure. Sizes vary widely by child.
What does C mean in Crocs sizes?
C is for child sizes (toddler and little kid). J is for junior or big-kid sizes.
Should I buy kids’ Crocs a size bigger?
Only slightly. Too big causes tripping, so keep the heel strap back if you go up.
Final verdict
Use age to get close, then measure
The age table narrows it down. A two-minute foot measurement gets it right.
