Buying trainers online means you can't try them on first — so getting your size right matters. Here's how to convert your size correctly, how to measure your foot at home, and what to expect from the brands we stock.
UK to EU to US Size Conversion
Sizing labels vary slightly by region. Use the chart below as your starting point, then check the brand notes further down — fit can vary a little from brand to brand even at the "same" size.
| UK | EU | US (Men's) | Foot Length (cm) |
|---|---|---|---|
| 6 | 40 | 7 | 24.5 |
| 6.5 | 40.5 | 7.5 | 25 |
| 7 | 41 | 8 | 25.5 |
| 7.5 | 41.5 | 8.5 | 26 |
| 8 | 42 | 9 | 26.5 |
| 8.5 | 42.5 | 9.5 | 27 |
| 9 | 43 | 10 | 27.5 |
| 9.5 | 44 | 10.5 | 28 |
| 10 | 44.5 | 11 | 28.5 |
| 10.5 | 45 | 11.5 | 29 |
| 11 | 46 | 12 | 29.5 |
How to Measure Your Foot at Home
Not sure what size you are? This takes two minutes:
- Place a sheet of paper on the floor and stand on it with your full weight
- Trace around your foot, keeping the pen upright against your skin
- Measure the longest point from heel to toe in centimetres
- Match that measurement against the table above
Measure both feet — most people have one very slightly larger than the other — and size for the bigger one.
Brand Fit Notes
Asics (Gel-Kayano 14, Gel-NYC, GT-2160, Gel 1130)
Generally true to size. If you're between sizes, we'd recommend sizing up rather than down.
Nike (P6000)
True to size for most customers.
Saucony (ProGrid Omni 9)
These tend to run slightly large. If you're between half sizes, we'd suggest sizing down rather than up.
Still Not Sure?
If you already own a pair from one of these brands and they fit well, that's your best reference point. If it's your first pair from a brand, ordering true to size is right for most people — and if it's not quite right, we're here to help.
Message us on Instagram @activefashion._ or via our contact page before you order and we'll help you get the right fit. You're also covered by our returns policy if it's not quite right.