Europe Size 21 to US: 0
Cross-market children’s footwear conversion mapping 21 specifications into 0 for sneakers, boots, sandals, dress shoes, slippers, and dance shoes.

Analyzing Footwear Size Equivalence Across Markets
Europe Size 21: Corresponds to a foot length of12.5 (4.9 ), estimated age 24m, and Mondopoint 125 .
US: 0: Corresponds to a foot length of 8.5 (3.3 ), estimated age 0-3m, and Mondopoint 85 .
Other Conversions to US: 0
Europe Size 16 → us-016 to us-0
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Europe Size 16.5 → us-016.5 to us-0
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Europe Size 17 → us-017 to us-0
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Europe Size 18 → us-018 to us-0
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Europe Size 18.5 → us-018.5 to us-0
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Europe Size 19 → us-019 to us-0
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Europe Size 19.5 → us-019.5 to us-0
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Europe Size 20 → us-020 to us-0
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Europe Size 21 → us-021 to us-0
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Europe Size 21.5 → us-021.5 to us-0
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Europe Size 22 → us-022 to us-0
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Europe Size 23 → us-023 to us-0
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