Find your size.
Tell SI your height, weight and shape. Get a size recommendation for each store’s chart, plus length and style ideas. Women and men.
Sources and method
Your recommendation uses each store’s published size chart where one exists (body measurements in inches, checked 13 October 2026; Torrid shows only for US 14 and up): ASOS women, Revolve, Lulus, Torrid (plus), Uniqlo men and H&M men. Your headline size comes from height and weight averages on a standard chart (labeled fallback : ASTM D5585 women’s misses and common US men’s charts); with waist and hip measurements, your dress size uses those instead. If you only give height, weight and shape, we estimate measurements first, so adding your bust, waist and hip (or chest and waist) is more accurate. Petite means under 5′4″, tall means 5′8″ and up for women (under 5′7″ and 6′2″+ for men); plus means US 16 and up. Brands cut differently, so always check the store’s chart on the product page. Everything is calculated on your device and saved only in this browser. Developers and AI assistants can call POST /api/size-guide (see openapi.json).