JP (cm) to US Shoe Size for Kids
20 JP (cm) size = 6.5 US size ยท cohort-based size mapping for cm
Direct Answer
20 JP (cm) size equals 6.5 US size
This result uses the selected cm cohort as the profile basis.
For 18 JP (cm) size, the cm cohort returns 4 US size under the same mapping assumptions.
Converter Calculator
6.5 US size
SwitchExplanation
JP (cm) converts to US by first mapping JP (cm) to millimeters, then mapping millimeters to US. Cohort profile fixed: Kids.
For JP (cm) size to US size, the active cm cohort determines the conversion constants applied to every value.
Keep the same cohort in both directions to avoid mixing shoe-size systems that use different wearer-group mappings.
Common Conversion Values
| JP (cm) size | US size |
|---|---|
| 18 | 4 |
| 19 | 5.5 |
| 20 | 6.5 |
| 21 | 7.5 |
| 22 | 9 |
Frequently Asked Questions
What is the opposite direction for JP (cm) size to US size?
Use the mirror US size to JP (cm) size route; it applies the inverse relationship for the opposite direction with the same assumptions.
Does this page use cohort-specific mapping?
Yes. This page is fixed to Kids.
How is JP (cm) size to US size calculated?
The converter applies the formula defined for JP (cm) size to US size, then renders rounded output for the direct answer and common-value rows.