United Kingdom Size 46–48 to US: S (35–37)
Cross-market men’s shirt and upper-body conversion mapping 46–48 specifications into S (35–37).

Analyzing Upper-Body Size Equivalence Across Markets
United Kingdom Size 46–48: Corresponds to a chest width of 116.8–121.9 (46–48 ), neck collar girth of 44.5 (17.5 ), sleeve length of 91.4 (36 ), and fit style Generous Full Fit.
US: S (35–37): Corresponds to a chest width of 88.9–94 (35–37 ), neck collar girth of 36.8 (14.5 ), sleeve length of 83.8 (33 ), and fit style Athletic Slim Fit.
Other Conversions to US: S (35–37)
United Kingdom Size 32–34 → us-s-35-3732–34 to us-s-35-37
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United Kingdom Size 35–37 → us-s-35-3735–37 to us-s-35-37
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United Kingdom Size 38–40 → us-s-35-3738–40 to us-s-35-37
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United Kingdom Size 42–44 → us-s-35-3742–44 to us-s-35-37
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United Kingdom Size 46–48 → us-s-35-3746–48 to us-s-35-37
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United Kingdom Size 50–52 → us-s-35-3750–52 to us-s-35-37
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United Kingdom Size 54–56 → us-s-35-3754–56 to us-s-35-37
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