The size converter puts UK, EU, US and centimetre sizes side by side. That helps when you buy from a brand that lists a different system, or when you move between models. A converted size is a starting point rather than a guarantee, because every brand cuts its boots a little differently.
How do the sizing systems differ?
UK, EU and US sizes all measure length, but each starts from a different scale, so the same foot gets a different number in each. Centimetre sizes are the closest to a plain measurement, and they are handy for comparing against your own measured length. None of them says anything about width. Two boots with the same size number can be a different width and a different volume.
Why do brands differ?
Each brand builds on its own lasts, so the same size number can fit longer, shorter, narrower or wider from one maker to another. Even inside a brand it changes by model. The Puma King runs short, and a half size up is the usual advice, while the adidas Copa Mundial runs long. Leather boots give with wear, and synthetic and knit boots do not.
That is why each model page carries its own size tip, and why we do not publish brand-by-brand conversion tables here. Check the tip before you order.
Tips for choosing a size
- Measure your foot in the evening, in your football socks, and use the larger foot.
- Leave about a thumb’s width between your longest toe and the end of the boot, and check that your toes do not touch when you lean forward with the laces done up.
- Go up a size only for a short toe space or thick socks, not for width.
- If a boot is tight at the sides but the length is right, you need a wider model, not a longer one.
- Try boots on at home, on a clean floor, so you can send them back.
Between two sizes? The between two sizes tool weighs it up for you. For the full picture on fit, read how football boots should fit, and take your size to the boot finder to see only the models that suit it.