Finding the right football boots starts with getting the correct size. The Football Boot Size Converter (UK/US/EU) helps you quickly convert football boot sizes between UK, US, and European sizing systems. Whether you’re buying new boots online or switching between brands, this tool makes it easier to compare sizes and find a comfortable fit. Keep in mind that sizing can vary slightly between brands and models.
Football Boot Size Converter (UK/US/EU)
Convert football boot sizes between UK, US and EU in seconds, or find your size from your foot length. Uses the official Nike and Adidas size charts, and shows the matching size in the other brand.
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- Brand
- Your Size
- Converted Size
Choose A Brand And Size System
Nike and Adidas size their boots a little differently, so pick the brand you want to buy.
Enter Your Size
Choose your current size from the list, or type your foot length if you chose Foot Length.
Stand on a sheet of paper, mark your heel and longest toe, and measure the distance. Use your longer foot.
Sizes come from Nike and Adidas men’s and unisex charts. Fit can vary between boot models, so always check the product’s own size guide before buying.
Is A UK 9 The Same In Nike And Adidas?
Not quite. The same UK size fits a slightly longer foot in Nike than in Adidas.
How The Boot Size Converter Works
Four quick steps to the right boot size.
Pick A Brand
Nike or Adidas.
Choose Your System
UK, US, EU or foot length.
Enter Your Size
From the list or in cm or inches.
Get Every Size
UK, US, EU, JP and the other brand.
Why Boot Sizes Are Confusing
UK, US and EU sizes use different scales, and every brand builds its own chart. That’s why the same player can be a UK 8 in one boot and a UK 8.5 in another. Buying online from a shop in another country makes it even harder.
The GlobeHour Football Boot Size Converter uses the men’s and unisex size charts published by Nike and Adidas. It converts your size between UK, US men’s, US women’s, EU and JP, and it matches your foot length to the closest size in the other brand, so you aren’t just copying a number across.
Nike Football Boot Size Chart
Men’s and unisex sizes, UK 5 to 13.
| UK | US Men | US Women | EU | Foot Length |
|---|---|---|---|---|
| 5 | 5.5 | 7 | 38 | 23.3 cm |
| 5.5 | 6 | 7.5 | 38.5 | 23.7 cm |
| 6 | 6.5 | 8 | 39 | 24.1 cm |
| 6 | 7 | 8.5 | 40 | 24.6 cm |
| 6.5 | 7.5 | 9 | 40.5 | 24.9 cm |
| 7 | 8 | 9.5 | 41 | 25.4 cm |
| 7.5 | 8.5 | 10 | 42 | 25.9 cm |
| 8 | 9 | 10.5 | 42.5 | 26.2 cm |
| 8.5 | 9.5 | 11 | 43 | 26.7 cm |
| 9 | 10 | 11.5 | 44 | 27.1 cm |
| 9.5 | 10.5 | 12 | 44.5 | 27.5 cm |
| 10 | 11 | 12.5 | 45 | 27.9 cm |
| 10.5 | 11.5 | 13 | 45.5 | 28.4 cm |
| 11 | 12 | 13.5 | 46 | 28.7 cm |
| 11.5 | 12.5 | 14 | 47 | 29.2 cm |
| 12 | 13 | 14.5 | 47.5 | 29.7 cm |
| 12.5 | 13.5 | 15 | 48 | 30.0 cm |
| 13 | 14 | 15.5 | 48.5 | 30.5 cm |
Nike’s own chart lists UK 6 twice (US 6.5 and US 7). Nike gives foot length in inches; the cm values here are converted.
Adidas Football Boot Size Chart
Men’s and unisex sizes, UK 5 to 13.
| UK | US Men | US Women | EU | Foot Length |
|---|---|---|---|---|
| 5 | 5.5 | 6.5 | 38 | 23.3 cm |
| 5.5 | 6 | 7 | 38⅔ | 23.8 cm |
| 6 | 6.5 | 7.5 | 39⅓ | 24.2 cm |
| 6.5 | 7 | 8 | 40 | 24.6 cm |
| 7 | 7.5 | 8.5 | 40⅔ | 25.0 cm |
| 7.5 | 8 | 9 | 41⅓ | 25.5 cm |
| 8 | 8.5 | 9.5 | 42 | 25.9 cm |
| 8.5 | 9 | 10 | 42⅔ | 26.3 cm |
| 9 | 9.5 | 10.5 | 43⅓ | 26.7 cm |
| 9.5 | 10 | 11 | 44 | 27.1 cm |
| 10 | 10.5 | 11.5 | 44⅔ | 27.6 cm |
| 10.5 | 11 | 12 | 45⅓ | 28.0 cm |
| 11 | 11.5 | 12.5 | 46 | 28.4 cm |
| 11.5 | 12 | 13 | 46⅔ | 28.8 cm |
| 12 | 12.5 | 13.5 | 47⅓ | 29.3 cm |
| 12.5 | 13 | 14 | 48 | 29.7 cm |
| 13 | 13.5 | 14.5 | 48⅔ | 30.1 cm |
Adidas uses EU sizes in thirds, such as 42⅔, and US men’s sizes are always half a size above UK.
How To Measure Your Foot For Football Boots
- Measure in the evening, when your feet are at their largest.
- Wear your football socks while you measure.
- Stand on a sheet of paper with your heel against a wall.
- Mark the tip of your longest toe and measure from the wall to the mark.
- Measure both feet and use the longer one.
Football Boot Fit Tips
- Boots should feel snug, with your heel locked in place.
- Your toes shouldn’t be pressed hard against the end.
- Try boots on with the socks and shin pads you play in.
- Leather boots can stretch a little; synthetic ones stretch less.
- Wide feet may need a wider model, not a bigger size.
- Check the size guide for each boot model before buying.
- Walk and jog in new boots indoors before wearing them outside.
- Children grow fast, so check their size every few months.
Football Boot Size Converter FAQ
What Is UK 8 In US And EU Football Boots?
In Nike, UK 8 is US 9 men’s and EU 42.5. In Adidas, UK 8 is US 8.5 men’s and EU 42.
Is The Football Boot Size Converter Free?
Yes. It is completely free, needs no sign-up and works on phones, tablets and computers. You can also download your size as a PDF.
Are Nike And Adidas Boots The Same Size?
Not exactly. For the same UK number, Nike’s chart fits a slightly longer foot. Matching by foot length, a Nike UK 8 is closest to an Adidas UK 8.5.
Should Football Boots Be A Size Smaller Than Trainers?
Many players wear the same size or go half a size down, because boots are meant to fit snugly. Always try them on with your match socks.
How Do I Convert US Women’s Sizes To Men’s?
On both charts, US women’s sizes are 1 to 1.5 sizes higher than US men’s. Choose US Women in the converter to see the men’s and UK size.
Why Are Adidas EU Sizes In Thirds?
Adidas uses a finer EU scale with steps of a third, such as 42, 42⅔ and 43⅓, to match its half sizes in UK and US.
Does This Converter Work For Kids’ Boots?
It uses men’s and unisex charts, which cover smaller adult sizes. For junior boots, check the brand’s kids’ size chart.
What Is The CM/JP Size On Nike Boxes?
Nike says its CM/JP label is a box size and is not the same as your foot length, so use the foot length column to measure.
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