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The most common reason an online shoe order goes wrong is not the shoe. It is that the number on the label means something different at every brand. Here is how to buy the right size from a Shopee or Lazada listing without trying the shoe on first.
Short answer: measure your foot in centimetres, compare it with the seller’s size chart in centimetres (not the number on the label), leave a little room at the toe, and read the return terms on the listing before you pay. Do those four things and most wrong-size orders never happen.
Why the number on the label tells you so little
Shoe sizes are not one standard. A size 8 can be sold as a US, UK, EU or local size, and the same number can be a different length from one brand to the next. Many listings on marketplaces also use sizes written for other countries, and sellers often copy a size chart from the manufacturer without checking it against the stock they actually received. The one measurement that does not change from brand to brand is the length of the inside of the shoe, in centimetres.
Step 1: measure your foot
- Do it in the evening. Feet swell a little over the day, and a shoe that fits in the morning can pinch by night.
- Stand on a sheet of paper with your heel against a wall.
- Mark the tip of your longest toe, then measure from the wall to the mark in centimetres.
- Repeat for the other foot. Most people have one slightly bigger foot, and you buy for the bigger one.
Step 2: compare it with the seller’s chart, in centimetres
Open the listing’s size chart and look for a column in centimetres, often labelled foot length or insole length. Match your measurement to that column, not to the US or EU number beside it. If the listing only shows the label sizes, message the seller and ask for the insole length in centimetres for the size you want. A seller who answers with a number is giving you something you can hold them to. Keep the chat.
A shortcut that works well: take a pair that already fits you, measure its insole in centimetres, and compare that with the chart.
Step 3: leave room, but not too much
Rules of thumb, not standards: running and training shoes usually want about a thumb’s width (roughly 1 cm) between your longest toe and the front. Closed formal and school shoes are less forgiving, so a smaller gap works. For sandals and slippers your heel should sit on the footbed and not hang over the back. If you are between two sizes, choose the bigger one for sneakers and the smaller one only if the shoe has laces or a strap to hold the foot in place.
| Type | What to check before you buy |
|---|---|
| Sneakers and running shoes | Insole length in cm; whether the listing says it runs small or large; room for socks. |
| School and formal shoes | Insole length and width; closed toe leaves little room for error, so measure both feet. |
| Sandals and slippers | Footbed length and whether the heel overhangs; strap adjustment if it has one. |
Step 4: before you pay
- Read who is selling. A brand’s own store, shown with Shopee’s Mall badge, is the lowest-risk seller for the right shoe. A reseller can sell the same model, but the stock, the sizing and the returns are theirs, not the brand’s. We wrote about that gap in why the same product costs so differently on one platform.
- Check the size you actually selected. Marketplace listings list sizes as variations, and it is easy to tap the wrong one. Look at the order summary before you confirm.
- Find the return terms and read them. The listing and your order page show what the platform allows for a wrong size, which can be different from a defect. We do not quote a window here because it changes and differs by seller, so read it yourself before you pay.
- Film the unboxing. A short video of opening the parcel is the simplest evidence if something is wrong when it arrives.
- Be suspicious of a price far below the brand’s own store. That gap is usually a different product, an old stock, or a copy.
Quick answers
What if I am between two sizes? Go up for sneakers and running shoes. For formal shoes, check the chart in centimetres for both sizes and pick the one with the better gap at your longer foot.
Is it better to buy from the brand’s own store? It is the lower-risk choice because the brand controls the stock and the size chart. It is not always the cheapest, and we say so when a reseller is cheaper.
Can I send it back if it does not fit? It depends on the seller and the platform’s rules at the time. Read the return terms on the listing before you pay; do not assume.
How this guide was made: it is research-based. We have not fitted or tested any shoe. As soon as the shoe shelf opens we will list only models with a price we saw and the date we saw it, the same rule as the rest of the shop. Read how we test and how we earn.
Related reading
- How to check if makeup on Shopee is genuine: official store, the FDA lookup and the batch code.
- 10.10 checklist for shoes and makeup: what to check before, during and after a sale.
- Why Lazada and Shopee prices differ for the same item: how to spot resellers and find the real price.
