Compare Shoes Across US, UK and EU Size Charts
Keep foot measurements, model-specific charts and fit observations together without a universal conversion shortcut.
Cross-border shoe shopping can put US, UK, EU and centimetre labels on the same screen. Those labels do not replace the maker's chart for the particular shoe. Start with a repeatable measurement record and treat width, intended use and the return process as separate questions. This guide helps organise the evidence before purchasing everyday footwear. It does not diagnose foot problems or promise that an online measurement guarantees comfort.
Measure both feet consistently
Follow the chosen manufacturer's measuring instructions with paper and a ruler or tape measure. Record both feet and the measuring method. ASICS, for example, instructs readers to trace both feet and measure from heel to longest toe; its fitting allowance belongs to its own guidance. Do not transfer a brand's running-shoe allowance to every casual shoe, sandal or boot.
Keep centimetres as the measurement record rather than immediately converting the result to a preferred size label. Also note the socks or other ordinary conditions relevant to the purchase. Avoid collecting private medical details in a shopping worksheet. If fitting needs involve pain, an orthotic or another specialist concern, seek appropriate fitting advice instead of treating this guide as an assessment.
Identify the exact chart and width
Find the maker's chart linked to the product and check whether it describes men's, women's, unisex or another range. Some charts convert size labels while others specify a foot measurement. Read the headings carefully. Save the model name and selected width alongside the regional size so you can distinguish a width change from a length change.
A shoe with the same numerical size as your current pair can have a different shape. Treat the chart as a filter, then use the seller's documented fit information for that model. Do not infer that one region's label is larger or smaller in every brand. If the listing hides the width or changes charts after you select a variant, resolve that uncertainty before ordering.
Compare the intended everyday setting
List where the footwear will be used: an office, errands, a casual indoor setting or another specific environment. Check the exact maker's intended-use description and care guidance. This matters more than a vague promise that one pair works everywhere. Any claimed protective, slip-resistant or performance function needs product-specific evidence for the relevant use.
Consider the clothing and socks with which the pair will be worn, and whether fastenings suit your needs. A quick-on style and an adjustable fastening answer different preferences. Product photographs cannot establish your fit, so keep a short list of uncertain handling or comfort questions for an appropriate in-person fitting or permitted delivery trial.
Plan the fit check and return route
Read the seller's country-specific return requirements before buying, including any restrictions on wear, packaging, tags and return shipping. Perform only the indoor check those conditions allow. Compare heel movement, toe space and pressure points through ordinary movement without trying to break in a clearly unsuitable shoe. A longer home trial is not automatically permitted by a retailer.
If the pair is suitable, save the brand, full model, regional size and width together. If it is not, record the specific mismatch before returning it. That observation is more useful than a general conclusion that a brand runs small. Keep the record current: changes to feet, intended socks or a new shoe version may make an older purchase an imperfect reference.
Compare the trade-offs
| Decision | Check | Practical consequence |
|---|---|---|
| Measurement | Record both feet in centimetres | Maintain a repeatable starting point. |
| Chart | Read the model-specific headings | A conversion chart is not a fit guarantee. |
| Width | Store alongside size | Length alone is incomplete. |
| Return | Read location-specific conditions | A cross-border order may have different logistics. |
Before you buy
- Both feet measured using maker instructions
- Chart category checked
- Width and regional label noted
- Intended-use description reviewed
- Permitted indoor fit check planned
Sources and further reading
Editorial scope: this article is research-based guidance. It does not describe hands-on testing. External references support specific documented facts; our planning exercises are editorial suggestions.