AU to BR Shoe Size for Kids

5.5 AU size = 30.5 BR size · cohort-based size mapping for selected cohort

Direct Answer

5.5 AU size equals 30.5 BR size

This result uses the selected selected cohort cohort as the profile basis.

For 3 AU size, the selected cohort cohort returns 27 BR size under the same mapping assumptions.

30.5 BR size

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AU converts to BR by first mapping AU to millimeters, then mapping millimeters to BR. Cohort profile fixed: Kids.

For AU size to BR size, the active selected cohort 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.

Model basis: output depends on the selected shoe-size cohort and follows the same cohort mapping in both directions.
Profile reference: selected cohort cohort.
Consistency rule: calculator output and table values keep the same shoe-size cohort in both directions.

Use the mirror BR size to AU size route; it applies the inverse relationship for the opposite direction with the same assumptions.

Yes. This page is fixed to Kids.

The converter applies the formula defined for AU size to BR size, then renders rounded output for the direct answer and common-value rows.