MM INCH US UK EU JAPAN
206 - 214 8 1⁄8 - 8 3⁄8 4 2 34 21
215 - 223 8 1⁄2 - 8 3⁄4 5 3 35/36 22
224 - 231 8 7⁄8 - 9 1⁄8 6 4 37 23
228 - 236 9 - 9 1⁄4 6.5 4.5 37.5 23.5
232 - 240 9 1⁄8 - 9 1⁄2 7 5 38 24
236 - 244 9 1⁄4 - 9 5⁄8 7.5 5.5 38.5 24.5
241 - 248 9 1⁄2 - 9 3⁄4 8 6 39 25
245 - 253 9 5⁄8 - 10 8.5 6.5 39.5 25.5
249 - 257 9 3⁄4 - 10 1⁄8 9 7 40/41 26
258 - 265 10 1⁄8 - 10 3⁄8 10 8 42 27
266 - 274 10 1⁄2 - 10 3⁄4 11 9 43 28
275 - 282 10 7⁄8 - 11 1⁄8 12 10 44/45 29
283 - 290 11 1⁄8 - 11 3⁄8 13 11 46 30
291 - 299 11 1⁄2 - 11 3⁄4 14 12 47 31
300 - 307 11 3⁄4 - 12 1⁄8 15 13 48/49 32