The Nike size chart in our size guides lists foot length in cm, so the surest way to find your basketball shoe size is to measure your foot and read across to your EU, US and UK size.
Short answer: Measure both feet in cm, from the heel to your longest toe (adidas says the big toe), late in the day and in your playing socks. Read your size from the longer foot in the chart of the brand you are buying, not from another brand's size. Between sizes, Nike says size up.
How do you measure your foot for basketball shoes?
A helper can mark the paper.
- Wear your playing socks (Nike, adidas).
- Tape paper to a hard floor against a wall. Nike warns that carpet lets it shift.
- Stand (do not sit) with your heel against the wall. Nike says a sitting foot measures shorter.
- Keep the pen upright and mark the back of your heel and the tip of your longest toe. Nike adds this is not always the big toe; adidas says to mark the tip of the big toe.
- Measure between the marks in cm. Repeat with the other foot.
Which foot, what time of day, how much room?
- Both feet: Nike says to size to the larger one.
- End of the day: Nike says your feet are largest then (a morning reading can be up to half a size smaller); adidas agrees.
- Toe room: when you try shoes on, Nike suggests a thumb's width between your longest toe and the end of the shoe. Nike's measuring steps also say to add a thumb's width to the measurement, while its chart page asks for the plain foot length. We suggest reading the chart with the length you measured and using the thumb's width as a check when you try the shoe on.
Nike size chart and Jordan size chart: men's footwear
This Nike size chart (men's footwear, from our size guides) is identical for Jordan, so it is also the Jordan size chart. Find your length in the CM column.
| EUR | US | UK | CM |
|---|---|---|---|
| 38.5 | 6 | 5.5 | 23.7 |
| 39 | 6.5 | 6 | 24.1 |
| 40 | 7 | 6 | 24.5 |
| 40.5 | 7.5 | 6.5 | 25.0 |
| 41 | 8 | 7 | 25.4 |
| 42 | 8.5 | 7.5 | 25.8 |
| 42.5 | 9 | 8 | 26.2 |
| 43 | 9.5 | 8.5 | 26.7 |
| 44 | 10 | 9 | 27.1 |
| 44.5 | 10.5 | 9.5 | 27.5 |
| 45 | 11 | 10 | 27.9 |
| 45.5 | 11.5 | 10.5 | 28.3 |
| 46 | 12 | 11 | 28.8 |
| 47 | 12.5 | 11.5 | 29.2 |
| 47.5 | 13 | 12 | 29.6 |
| 48 | 13.5 | 12.5 | 30.0 |
| 48.5 | 14 | 13 | 30.5 |
adidas size chart: men's footwear
adidas lists EUR in thirds (42⅔). From our adidas size guide:
| EUR | US | UK | CM |
|---|---|---|---|
| 38 | 5.5 | 5 | 23.3 |
| 38⅔ | 6 | 5.5 | 23.8 |
| 39⅓ | 6.5 | 6 | 24.2 |
| 40 | 7 | 6.5 | 24.6 |
| 40⅔ | 7.5 | 7 | 25 |
| 41⅓ | 8 | 7.5 | 25.5 |
| 42 | 8.5 | 8 | 25.9 |
| 42⅔ | 9 | 8.5 | 26.3 |
| 43⅓ | 9.5 | 9 | 26.7 |
| 44 | 10 | 9.5 | 27.1 |
| 44⅔ | 10.5 | 10 | 27.6 |
| 45⅓ | 11 | 10.5 | 28 |
| 46 | 11.5 | 11 | 28.4 |
| 46⅔ | 12 | 11.5 | 28.8 |
| 47⅓ | 12.5 | 12 | 29.3 |
| 48 | 13 | 12.5 | 29.7 |
Why use cm and not another brand's size?
Nike says a size 10 is not a fixed length: it varies by brand and style, so work from cm instead of converting size to size. Our size guides show why:
| US | Nike | Jordan | adidas | New Balance | Puma | Under Armour |
|---|---|---|---|---|---|---|
| 9 | EUR 42.5 / UK 8 / 26.2 cm | EUR 42.5 / UK 8 / 26.2 cm | EUR 42⅔ / UK 8.5 / 26.3 cm | EUR 42.5 / UK 8.5 / 27 cm | EUR 42 / UK 8 / 27 cm | EUR 42.5 / UK 8 / 27 cm |
| 11 | EUR 45 / UK 10 / 27.9 cm | EUR 45 / UK 10 / 27.9 cm | EUR 45⅓ / UK 10.5 / 28 cm | EUR 45 / UK 10.5 / 29 cm | EUR 44.5 / UK 10 / 29 cm | EUR 45 / UK 10 / 29 cm |
What does each brand say about fit?
Our size guide for each brand says:
- Nike: true to size; between sizes, go half a size up.
- Jordan: true to size; on retro models (1, 4, 11) keep your usual size.
- adidas: true to size, with fractional EU sizes.
- Converse: runs large; most size down 0.5 to 1 full size versus Nike or Jordan.
- New Balance: true to size, with widths D, 2E and 4E.
- Puma: true to size; the MB line runs slightly narrow.
- Under Armour: true to size with a snug lockdown.
Nike shoe size guide: what if you are between sizes?
The brands differ. Nike says to size up. adidas says one size down for a tight fit and one size up for a loose fit, and suggests considering half or even a full size up for shoes worn while exercising.
What size for kids?
Nike's kids steps: the child stands, heels against the wall, in the socks they will wear; mark the longest toe on both feet and use the longer measurement. Nike says to re-measure every 2-3 months for toddlers and little kids, then every 4-6 months.
Our kids' size guides (Nike and Jordan) label sizes TD, PS and GS. These are our labels, not a brand definition:
- TD (Toddler): EUR 16 to 27; US 1C to 10C; UK 0.5 to 9.5; CM 7.0 to 16.0
- PS (Preschool): EUR 27.5 to 35; US 10.5C to 3Y; UK 10 to 2.5; CM 16.5 to 22.0
- GS (Grade School): EUR 35.5 to 40; US 3.5Y to 7Y; UK 3 to 6.5; CM 22.0 to 25.5
Nike's own US groups: 0-3, 3-7 and 7-12 years. Browse kids' basketball shoes.
FAQ
Is the Jordan size chart the same as Nike's?
In our size guides, yes: identical numbers for men's footwear.
Are women's sizes different?
Nike says its women's sizes run 1.5 sizes larger than men's for the same foot length. These tables are men's.
See all our size charts.
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Sources
- Nike: how to measure foot size (last updated 21 October 2026)
- Nike: men's footwear size and fit
- Nike: kids' footwear size and fit
- Nike: kids' measuring guide (PDF)
- adidas: how to measure shoe size (November 2025)
- adidas: men's shoe size chart
- Converse: size chart guide
The statements by Nike, adidas and Converse were read on their own websites on 4 November 2026. The chart numbers and fit notes come from our size guides, read on the same day.