United Kingdom Size 28–30 to US: L (12–14)
Cross-market women’s underwear, panty, and thong conversion mapping 28–30 specifications into L (12–14).

Analyzing Women’s Underwear Size Equivalence Across Markets
United Kingdom Size 28–30: Waist contouring range of 99.1–104.1 (39–41 ), full hip range of 124.5–129.5 (49–51 ), style variants Extended Plus Briefs & Comfort Foundations, and fit classification Full Figure Plus Fit.
US: L (12–14): Waist contouring range of 76.2–81.3 (30–32 ), full hip range of 101.6–106.7 (40–42 ), style variants Briefs, High-Waist Panties & Boy Shorts, and fit classification Comfort Stretch Fit.
Other Conversions to US: L (12–14)
United Kingdom Size 4–6 → us-l-12-144–6 to us-l-12-14
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United Kingdom Size 8–10 → us-l-12-148–10 to us-l-12-14
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United Kingdom Size 12–14 → us-l-12-1412–14 to us-l-12-14
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United Kingdom Size 16–18 → us-l-12-1416–18 to us-l-12-14
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United Kingdom Size 20–22 → us-l-12-1420–22 to us-l-12-14
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United Kingdom Size 24–26 → us-l-12-1424–26 to us-l-12-14
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United Kingdom Size 28–30 → us-l-12-1428–30 to us-l-12-14
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