Crocs Kids Shoe Size Chart & C/J Conversion Guide [Official]
Crocs utilizes a proprietary Child (C) and Junior (J) sizing system instead of standard US shoe sizing numbers. Crocs C4 through C13 cater to infants and toddlers, while J1 through J6 cater to youth and older children.
C Sizes (Child)
C4 to C13
Infants, toddlers & preschoolers
J Sizes (Junior)
J1 to J6
Youth & women's cross-shopping
Whole Sizes Only
Always Round Up
Never size down on clogs
Crocs Kids Size Conversion Table
Relaxed Roomy Fit| Crocs Size | Standard US Size | Category | EU Size | Foot Length (CM) | Inches |
|---|---|---|---|---|---|
| C4 | 4C | Toddler | 19-20 | 11.5 cm | 4.5" |
| C5 | 5C | Toddler | 20-21 | 12.3 cm | 4.8" |
| C6 | 6C | Toddler | 22-23 | 13.2 cm | 5.2" |
| C7 | 7C | Toddler | 23-24 | 14.0 cm | 5.5" |
| C8 | 8C | Toddler | 24-25 | 14.9 cm | 5.9" |
| C9 | 9C | Toddler | 25-26 | 15.7 cm | 6.2" |
| C10 | 10C | Toddler | 27-28 | 16.6 cm | 6.5" |
| C11 | 11C | Little Kid | 28-29 | 17.4 cm | 6.9" |
| C12 | 12C | Little Kid | 29-30 | 18.3 cm | 7.2" |
| C13 | 13C | Little Kid | 30-31 | 19.1 cm | 7.5" |
| J1 | 1Y | Junior / Big Kid | 32-33 | 20.0 cm | 7.9" |
| J2 | 2Y | Junior / Big Kid | 33-34 | 20.8 cm | 8.2" |
| J3 | 3Y | Junior / Big Kid | 34-35 | 21.7 cm | 8.5" |
| J4 | 4Y | Junior (Women's 6) | 36-37 | 22.5 cm | 8.9" |
| J5 | 5Y | Junior (Women's 7) | 37-38 | 23.3 cm | 9.2" |
| J6 | 6Y | Junior (Women's 8) | 38-39 | 24.2 cm | 9.5" |
Important Crocs Fitting Advice
- ✓ Crocs only come in whole sizes. If your child's measurement lands on a half size, always round UP to the next whole size.
- ✓ The pivoting heel strap pushes the foot forward when worn behind the heel; account for at least 10–12mm of backroom clearance.
- ✓ Junior size J4 equals a Men's 4 or Women's 6, making them popular for youth and adult cross-shopping.
Frequently Asked Questions
Helpful fit allowances, measuring wisdom, and sizing advice for parents.
What do 'C' and 'J' mean on kids Crocs?
Crocs sizes starting with 'C' indicate Child (infant and toddler sizes from C4 through C13). Sizes starting with 'J' indicate Junior (older kids and youth sizes from J1 through J6).
Do Crocs come in half sizes for children?
No. Crocs clogs and sandals are manufactured strictly in whole sizes. If your child measures between sizes or has wide feet, always size up to the next whole size.
How does the heel strap affect Crocs sizing?
Wearing the heel strap behind the heel pushes the child's foot forward toward the front of the clog. If there is not at least 10mm to 12mm of clearance, their toes will hit the front bumper.
What women's size equals a kids Crocs J4, J5, or J6?
Crocs Junior sizes translate directly to women's adult sizing: J4 = Women's 6, J5 = Women's 7, and J6 = Women's 8.