US: 18M to Europe Size 80
Cross-market children’s sleepwear, pajamas, nightgowns, sleep sacks, robes, and nightshirts size conversion mapping 18M specifications into 80.

Analyzing Size Equivalence Across Markets
US: 18M: Corresponds to a height baseline of 86 (33.9 ), a weight baseline of 12.5 (27.5 ), and a chest baseline of 52 (20.5 ).
Europe Size 80: Corresponds to a height baseline of 80 (31.5 ), a weight baseline of 11 (24 ), and a chest baseline of 50 (19.7 ).
Other Conversions to Europe Size 80
US: 0-3M → eu-800-3M to eu-80
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US: 3-6M → eu-803-6M to eu-80
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US: 6-9M → eu-806-9M to eu-80
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US: 12M → eu-8012M to eu-80
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US: 18M → eu-8018M to eu-80
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US: 2T → eu-802T to eu-80
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US: 3T → eu-803T to eu-80
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US: 4T → eu-804T to eu-80
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US: 5 → eu-805 to eu-80
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US: 6 → eu-806 to eu-80
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US: 7 → eu-807 to eu-80
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US: 8 → eu-808 to eu-80
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