SynergyFiit Footwear Size Guide
Find your size in the chart below. If you’re unsure of your size, use the “How to measure your foot length” guide at the bottom of the size chart to help you choose the correct fit. Please note that the CM size shown on shoe boxes and labels refers to the shoe’s internal length, not your actual foot length (cm).
| UK | EUROPE | US MEN’S | US WOMEN’S | INCHES | CM |
| 1.5 | 33.5 | 2 | 3.5 | 8.3 / 16 | 20.8 |
| 1.5 | 34.5 | 2.5 | 4 | 8.5 / 16 | 21.2 |
| 2 | 35 | 3 | 4.5 | 8.1 / 2 | 21.6 |
| 2.5 | 35.5 | 3.5 | 5 | 8.11 / 16 | 22 |
| 3 | 36 | 4 | 5.5 | 8.13 / 16 | 22.4 |
| 3.5 | 36.5 | 4.5 | 6 | 9 | 22.9 |
| 4 | 37.5 | 5 | 6.5 | 9.3 / 16 | 23.3 |
| 4.5 | 38 | 5.5 | 7 | 9.5 / 16 | 23.7 |
| 5 | 38.5 | 6 | 7.5 | 9.1 / 2 | 24.1 |
| 5.5 | 39 | 6.5 | 8 | 9.11 / 16 | 24.5 |
| 6 | 40 | 7 | 8.5 | 9 13 / 16 | 25 |
| 6.5 | 40.5 | 7.5 | 9 | 10 | 25.4 |
| 7 | 41 | 8 | 9.5 | 10.3 / 16 | 25.8 |
| 7.5 | 42 | 8.5 | 10 | 10.5 / 16 | 26.2 |
| 8 | 42.5 | 9 | 10.5 | 10.1 / 2 | 26.7 |
| 8.5 | 43 | 9.5 | 11 | 10.11 / 16 | 27.1 |
| 9 | 44 | 10 | 11.5 | 10.13 / 16 | 27.5 |
| 9.5 | 44.5 | 10.5 | 12 | 11 | 27.9 |
| 10 | 45 | 11 | 12.5 | 11.3 / 16 | 28.3 |
| 10.5 | 45.5 | 11.5 | 13 | 11.5 / 16 | 28.8 |
| 11 | 46 | 12 | 13.5 | 11.1 / 2 | 29.2 |
| 11.5 | 47 | 12.5 | 14 | 11.11 / 16 | 29.6 |
| 12 | 47.5 | 13 | 14.5 | 11.13 /16 | 30 |
| 12.5 | 48 | 13.5 | 15 | 12 | 30.5 |
| 13 | 48.5 | 14 | 15.5 | 12.3 / 16 | 30.9 |
| 13.5 | 49 | 14.5 | 16 | 12.5 / 16 | 31.3 |
| 14 | 50 | 15 | 16.5 | 12.1 / 2 | 31.7 |
| 14.5 | 50.5 | 15.5 | 17 | 12.11 / 16 | 32.2 |
| 15 | 51 | 16 | 17.5 | ||
| 15.5 | 51.5 | 16.5 | 18 |
How to Measure Your Foot Length
- Prepare the paper – Tape a sheet of paper securely to a hard, flat surface to prevent slipping.
- Stand correctly – Step onto the paper with your feet shoulder-width apart, distributing your weight evenly. (Only one foot should be on the paper at a time.)
- Mark the foot outline – With a pen or pencil held straight down, have someone assist you in marking the tip of your big toe and the very back of your heel.
- Measure the length – Step off the paper and use a ruler or tape measure to find the distance between the two marks. This is your foot length.
- Repeat for the other foot – It’s normal for one foot to be slightly longer than the other.
- Determine your size – Use the longer measurement when checking our size guide. If your measurement falls between sizes, we recommend sizing up for the best fit.