The foot length in inches does not always accurately determine the UK shoe size. For example, 11 inches can be from 8.5 UK to 10.5 UK. The adjustment of the foot length to the size is greatly influenced by the own measurement system specified by the shoe manufacturer. Therefore, this is the first thing to do before checking the size of your UK shoes.
However, you can approximate the own size of the shoes, for this purpose I collected data from several tables of sizes of shoes. Then, on their basis, I calculated the minimum and maximum values for the foot length in inches. The results are valid for both women and men.
Foot length is measured from the heel to the end of the long toe.
How to convert the value of the foot length to the shoe size?
Standard conversions are commonly accepted measurements that correspond to the lengths of the foot and the shoe size assigned to it. From the table, you will find out the overall size of your shoe based on the length of your foot.
| Foot length in inches | Foot length in mm | UK size |
| 8 1⁄3 | 211.6 | 2 |
| 8 1⁄2 | 215.9 | 2.5 |
| 8 2⁄3 | 220.13 | 3 |
| 8 5⁄6 | 224.36 | 3.5 |
| 9 | 228.6 | 4 |
| 9 1⁄6 | 232.83 | 4.5 |
| 9 1⁄3 | 237.06 | 5 |
| 9 1⁄2 | 241.3 | 5.5 |
| 9 2⁄3 | 245.53 | 6 |
| 9 5⁄6 | 249.76 | 6.5 |
| 10 | 254 | 7 |
| 10 1⁄6 | 258.23 | 7.5 |
| 10 1⁄3 | 262.46 | 8 |
| 10 1⁄2 | 266.7 | 8.5 |
| 10 2⁄3 | 270.93 | 9 |
| 10 5⁄6 | 275.16 | 9.5 |
| 11 | 279.4 | 10 |
| 11 1⁄6 | 283.63 | 10.5 |
| 11 1⁄3 | 287.86 | 11 |
| 11 1⁄2 | 292.1 | 11.5 |
| 11 2⁄3 | 296.3 | 12 |
| 11 5⁄6 | 300.56 | 12.5 |
| 12 | 304.8 | 13 |
Different foot length values in inches for men’s UK shoe sizes
The table contains aggregated values from dimension tables for various manufacturers of men’s footwear.
| Min inches | Max inches | UK size |
| 8.7 | 9.06 | 3 |
| 8.9 | 9.25 | 4 |
| 9 | 9.45 | 4.5 |
| 9.4 | 10.04 | 5.5 |
| 9.7 | 10.24 | 6 |
| 10.04 | 10.31 | 6.5 |
| 9.8 | 10.43 | 7 |
| 10.2 | 10.63 | 7.5 |
| 10.63 | 10.83 | 8 |
| 10.4 | 11.02 | 8.5 |
| 10.5 | 11.1 | 9 |
| 10.7 | 11.30 | 9.5 |
| 10.9 | 10.90 | 10 |
| 10.98 | 11.61 | 10.5 |
| 11.2 | 11.81 | 11 |
| 11.3 | 12.2 | 11.5 |
| 11.5 | 12.2 | 12 |
| 11.7 | 12.6 | 12.5 |
| 11.9 | 12.6 | 13 |
| 12 | 12.99 | 13.5 |
| 12.99 | 12.99 | 14 |
| 12.2 | 13.39 | 14.5 |
| 12.7 | 12.7 | 15 |
| 13.19 | 13.78 | 15.5 |
The results from the table are presented on the chart.
Different foot length values in inches for women’s UK shoe sizes
The table contains aggregated values from dimension tables for various manufacturers of women’s footwear.
| Min inches | Max inches | UK size |
| 8.27 | 8.82 | 2 |
| 8.46 | 8.98 | 2.5 |
| 8.66 | 9.06 | 3 |
| 8.7 | 9.25 | 3.5 |
| 9.06 | 9.33 | 4 |
| 8.9 | 9.61 | 4.5 |
| 9.2 | 9.72 | 5 |
| 9.65 | 9.84 | 5.5 |
| 9.4 | 10 | 6 |
| 9.5 | 10.12 | 6.5 |
| 9.7 | 10.24 | 7 |
| 9.8 | 10.51 | 7.5 |
| 10 | 10.51 | 8 |
| 10.2 | 10.83 | 8.5 |
| 10.4 | 11.02 | 9 |
| 10.7 | 11.22 | 9.5 |
| 11.22 | 11.42 | 10 |
| 10.9 | 11.81 | 10.5 |
| 11.2 | 12.01 | 11 |
| 11.3 | 11.3 | 11.5 |
| 11.5 | 12.40 | 12 |
| 11.7 | 12.80 | 13 |
| 11.9 | 12.99 | 14 |
| 12 | 13.39 | 14.5 |
| 13.58 | 13.58 | 15 |
| 13.78 | 13.78 | 15.5 |
| 13.98 | 13.98 | 16 |
| 14.17 | 14.17 | 16.5 |
| 14.37 | 14.37 | 17 |
| 14.57 | 14.57 | 17.5 |
| 14.76 | 14.76 | 18 |
| 14.96 | 14.96 | 18.5 |
| 15.16 | 15.16 | 19 |
| 15.35 | 15.35 | 19.5 |
| 15.55 | 15.55 | 20 |
Some of the data from the size table are also presented on the chart.
How to adjust the UK shoe size?
The first step is to measure your foot length in inches. Then, use the tables above and choose the most suitable value for the shoe size. Actually, each brand uses its own measuring system, so it is also worth checking what the size table looks like in a given store.