Get a ruler, pen, and piece of paper. For NZ women’s shoe sizes, refer to the UK sizes as they are the exact same. The Barleycorn is used in the UK and United States and sizes increase by 1/3 of an inch every time. Men's Shoe Size Chart; UK: JAP: USA: AUS: EU : 4: 23: 4: 4½: 37: Shop Size 4: 4½: 23.5: 4½: 5: 37: Shop Size 4½: 5: 24: 5: 5½: 38: Shop Size 5: 5½: 24.5: 5½: 6: 38: Shop Size 5½: 6: 25: 6: 6½: 39: Shop Size 6: 6½: 25.5: 6½: 7: 40: Shop Size 6½: 7: 26: 7: 7½: 41: Shop Size 7: 7½: 26.5: 7½: 8: 42: Shop Size 7½: 8: 27: 8: 8½: 42: Shop Size 8: 8½: 27.5: 8½: 9: 43: Shop Size 8½: 9: 28: 9: 9½: 43: Shop Size 9: 9½: 28.5: 9½: 10: 44: … I am assuming that your foot is wider than mine, which then would make you have to get a bigger size. For example, a UK men’s size 9 would equate to a US size 9.5. Here’s a handy tip – try to remember these simple rules for US shoe sizing: US women’s shoe sizes = AU women’s size scale; Subtract 1 size from US men’s shoe sizes to find UK men’s size scale; European sizes are widely recognized internationally, so it’s worth remembering your European shoe size if shopping abroad. US Sizes Euro Sizes UK Sizes Inches CM; 6: 39: 5.5: 9.25" 23.5: 6.5: 39: 6: 9.5" 24.1: 7: 40: 6.5: 9.625" 24.4: 7.5: 40-41: 7: 9.75" 24.8: 8: 41: 7.5: 9.9375" 25.4: 8.5: 41-42: 8: 10.125" 25.7: 9: 42: 8.5: 10.25" 26: 9.5: 42-43: 9: 10.4375" 26.7: 10: 43: 9.5: 10.5625" 27: 10.5: 43-44: 10: 10.75" 27.3: 11: 44: 10.5: 10.9375" 27.9: 11.5: 44-45: 11: 11.125" 28.3: 12: 45: 11.5: 11.25" 28.6: 13: 46: 12.5: 11.5625" 29.4: 14: 47: 13.5: 11.875" … Also when converting to AUS sizes, they are exactly the same which should save a lot of time. USA/International Size Conversion Table. In the United States and Canada, there are different systems that are used concurrently.The size indications are usually similar but not exactly equivalent especially with athletic shoes at extreme sizes. I wear a size 10.5 to 11 in US shoes and usually can fit into a 43.5 or 44. In the U.S. and Britain, shoe sizes change by 1/3″ per half size. Please see our country-specific men's shoe size charts: US Shoe Size Chart, UK Shoe Size Chart or European Shoe Size Chart. How to Measure Your Shoe Size. Average Shoe Size for Women by Height chart Worldwide (other Countries) us eu uk & aus mx chn inch cm; 5: 37.5: 4.5-38: 9.3" 23.8: 5.5: 38: 5: 4.5: 39: 9.5" 24.1: 6: 38.5: 5.5: 5: 39.5: 9.6" 24.4: 6.5: 39: 6: 6: 41: 9.8" 25: 7.5: 40: 7: 6.5-10" 25.4: 8: 41: 7.5: 7: 42: 10.1" 25.7: 8.5: 42: 8: 7.5: 43: 10.2" 26: 9: 43: 8.5: 8: 43.5: 10.3" 26.3: 9.5: 43.5: 9: 8.5: 44: 10.5" 26.6: 10: 44: 9.5: 9: 44.5: 10.6" 26.9: 10.5: 44.5: 10: 9.5: 45: 10.7" 27.3: 11: 45: 10.5: 10: 46: 10.8" 27.6: 11.5: 45.5: 11: 10.5-11" 28: 12: 46: 11.5: 11: … Internationally, shoe size charts are based on what is known as the Brannock system. In the ready-to-wear shoe world, feet are measured using a Brannock Device. Place the piece of paper flat on the ground and stand on it. An 8.5 or 9 UK size, is roughly a 9 or 9.5 us shoe size. Shoe Width To make sure to get a perfect fitting pair of shoes, you also need to take shoe width into account. In the UK (United Kingdom), the average Shoe size is between 6.5 and 7. For Indian men’s shoe sizes, refer to the UK column as they follow the same standards. Assuming a size 12 American shoe is, in fact, 12 inches long, that would mean an 11.5 is 11 2/3″ long, whereas a 12.5 shoe would be 12 1/3″ long. Women’s: This is used in Canada, Australia, the States and New Zealand. How To Measure Foot Size. To find out your shoe size, follow the instructions below to measure your foot, and then use the charts above to find the appropriate size conversions. See our Men's Shoe Width Guide to learn more. Make sure your foot is flat. Find the right shoe size with our easy-to-read Nike men's footwear size chart. Still, a 45 seems really big for your foot size. A 45 would usually be too big for me. 301 Conover Station SE Conover, NC 28613 828-327-7000, ext 4144 With this system, 2 barleycorns are added for each new shoe size. It’s totally different from the one for women in the US, but that’s to be expected since they are two different countries.