Buying shoes from a KakoBuy spreadsheet: pick the size by foot length, then decide what to do about the box

What a shoe row in a KakoBuy sheet leaves out

A shoe row usually gives a title, a price in yuan and a link. It rarely gives the three facts that decide whether the pair works: the inside length of the shoe, the weight of the pair in its box, and its state on reaching the warehouse. This page fills those gaps before you pay.

Shoes are the category where a small error costs the most. A top one size off can be worn loose; a shoe 8 mm short cannot be worn at all. They are also bulky, so a pair that looks cheap at ¥200 can become expensive once a rigid box is added to the parcel weight. KakoBuy buys from the seller, stores the item in its Xiamen warehouse and posts it on; it does not choose a size for you.

Before you pay for a shoe row, you need three numbers in the sheet: your foot length, the seller's insole length for your size, and the parcel weight.

Foot length to EU, US and UK size: an approximate table

Chinese sellers often list sizes in millimetres: 245 means a 24.5 cm foot. KakoBuy's footwear guide says so and publishes a conversion chart to European, American and British sizes; the table reproduces rows from it. It is approximate, because factories cut lasts differently, so the seller's chart for the exact pair always wins.

KakoBuy also gives a formula: (EU size + 10) × 0.5 equals a theoretical foot length, so EU 42 suggests 26 cm. Its own chart puts 26.5 cm at EU 42, so the two disagree by half a centimetre: guides, not standards.

Measure as KakoBuy describes: stand on paper, mark the longest toe and the heel, measure the gap, repeat for the other foot and use the larger number. Add 0.5 to 1 cm of room, then read across. Our size sheet CSV has a row for shoe insole length and columns for the seller's value, the difference and your decision, so the numbers stay with the row.

Convert from centimetres, not from the number in the title, and treat the table as a first guess.

Measuring insole length so the seller's chart means something

The table tells you what you need; the insole length tells you what the pair offers. A seller who writes "size 42" may mean an insole of 26.0 cm or 27.0 cm, and that one-centimetre spread is more than a full EU size. Our size sheet defines the check as heel to longest toe inside your best-fitting shoe, or foot length plus 0.5 to 1 cm.

1. Measure your better-fitting shoe from the inside with a straight ruler.
2. Find the insole length on the listing or ask the seller. A screenshot of the chart is fine.
3. Compare. The seller's insole should be at least your foot length plus 0.5 cm for open shoes, and plus 1 cm for closed shoes and boots.
4. Write the result in the sheet. If two sizes straddle your number, take the larger for boots and the smaller for slides.

Ask for the insole length of your size; it turns a vague size label into a number you can test.

Box weight: why a pair costs more to ship than it looks

International lines charge by weight, and some bill volumetric weight (length × width × height in cm divided by 5,000 to 8,000, depending on the carrier) when that is higher. A shoebox is the classic case: a rigid carton around a light trainer takes up a lot of space. The quotes below use actual weight with no dimensions, so a bulky parcel could price higher on a volumetric line.

The main lever is removing the box. The saving is real, but the pair then travels without its own protection and without original packaging for a later resale. If the box matters to you, keep it and pay for the weight.

Decide about the box before the order, not after the weight is on the scale.

Learning the weight first: the ¥18 pre-packing service

KakoBuy sells a pre-packing service at ¥18 per time. Its help page defines it as a service for obtaining parcel weight information before the parcel is officially sent. You can buy it after submitting a parcel but before paying freight (quote the S-number), or earlier by quoting the item's OG-number once it shows "can submit parcel". KakoBuy says it finishes within 24 hours and sends the weight through an order message.

The remarks box is where you state the packaging you want. The help page's own example is "remove shoe box packaging", which is exactly the instruction this page is about. It also warns that if the packaging requirement in your pre-packing remark differs from the one on the real parcel, the weight is not updated and you only get the result as a message. So write the same instruction in both places.

At about $2.52 (¥18 at roughly $0.14 per yen), pre-packing pays for itself when the line has a steep price gap between weight bands, as the next section shows.

Buy pre-packing when two or more pairs share a parcel; for a single pair, skip it and use the estimator.

A two-pair parcel, calculated line by line

The figures below are a hypothetical example. Assume two pairs at ¥300 each (about $42 each, $84 together) and a pair weighing 1,000 g in its box or 500 g without it. The shipping figures are KakoBuy's estimator quotes from 12 October 2026, destination and weight only, no dimensions. The ¥8 customs declaration is the figure KakoBuy calls typical and varies by line. Everything was computed in Python.

Removing the boxes cuts the shipping line by about 40 percent on these two lines. For every line, see the USA shipping page and the Germany shipping page. If your pairs are heavier than 1 kg each, run the shipping calculator with your own weights, and remember that line prices change with the carrier market.

Two pairs without boxes cost $13 to $28 less on these two lines, even after paying ¥18 for the weight check.

Checking the pair in the QC photos

When a shoe arrives at the warehouse, KakoBuy's inspectors check the appearance, model, style, colour, size and large-area damage. Shoes are among the product types the warehouse will open; sealed items from other categories are only checked from the outside. What the inspection does not cover is spelled out too: colour difference, loose threads and other tiny issues. KakoBuy does not publish how many free QC photos you get (community estimates say three to five), so decide what you need to see before ordering extras at ¥2 each.

A short list for shoe photos:

• Size label inside the tongue or on the insole. Does it match the size you chose, in the same system as the listing?
• Left and right side by side. Look for different heights or crooked toe caps.
• Sole and glue line. Excess glue at the midsole edge, gaps between the upper and the sole, and uneven tread are the common flaws.

Ask for a personalised photo of the sole and insole stamp. Our row check CSV has a step for exactly this, whether real warehouse photos of the same item exist, and our QC photos guide explains the inspection scope in more detail. If the problem is a wrong size or a clear defect, start the return request immediately, as the window closes 120 hours after stock-in.

Judge the pair on size label, symmetry and sole joins; the free photos will not show your foot length.

If it doesn't fit: returns, exchanges and who pays

KakoBuy's returns rules decide how much risk a size guess carries. The request must be made within 5 days (120 hours) after the item is "stocked in", the seller must accept returns, and the shoes must be resalable. Custom-made items, second-hand items and anything with tags removed are excluded. The first return and the first exchange in each calendar month have no KakoBuy fee for non-Prime users; later ones cost ¥5 to ¥20 for returns and ¥10 to ¥40 for exchanges, plus shipping to and from the seller. When the seller is at fault (wrong item, quality problem), you do not pay. The returns guide has the full rules.

The clock runs from stock-in, not from when you look. Our plus size and XS chart guide covers the same measurement-first logic for clothes. If you would rather not open an agent account, scan our WhatsApp QR on the contact page and pay per order.

The 5-day window is short; measure first and keep shoes clean until you are sure.

Questions buyers ask

What shoe size should I pick if my foot is 26.5 cm long?

On KakoBuy's own men's chart, 26.5 cm lines up with EU 42, US 8.5 and UK 8. Treat that as a starting point only. Add roughly 0.5 to 1 cm for room, check the seller's chart for the exact pair, and if the seller lists an insole length, choose the size whose insole is at least your foot length plus that margin.

How much cheaper is a boxless pair to ship to Germany?

Usually, yes, because most lines charge by weight. In our hypothetical example, two pairs weighing 1,000 g each boxed fall to 500 g each boxless. On KakoBuy's estimator quote for Germany on 12 October 2026, 2,000 g cost $39.30 on the Europe DHL Line and 1,000 g cost $23.70, a gap of $15.60.

How do I learn the parcel weight before I pay for shipping?

Buy KakoBuy's pre-packing service, which costs ¥18 each time. KakoBuy says it completes the job within 24 hours and sends the weight through an order message. Its own help page gives 'remove shoe box packaging' as an example of what to write in the remarks box, so you can see the boxless weight before committing.

Can I return shoes that turn out too small?

Possibly, but only inside a narrow window. KakoBuy's help centre allows a return or exchange request within 5 days (120 hours) after the item is stocked in, and only if the seller accepts returns and the shoes are still resalable. The first return and first exchange each calendar month carry no KakoBuy fee. Worn or tagless pairs are unlikely to qualify.

Will KakoBuy's warehouse check that the shoes are the right size?

It checks size against the label, not against your foot. Inspectors look at appearance, model, style, colour, size and large-area damage, and shoes are one of the product types KakoBuy opens for inspection. It does not cover colour difference, loose threads or tiny flaws. The number of free photos is not published, so measure before you order.

Are boots and slides sized the same way as trainers?

The foot-length method works for all three, but the margin differs. Boots with a thick sock need about 1 cm of room, while slides and sandals can be nearer 0.5 cm because the toes are not enclosed. Whatever the type, ask the seller for the insole length of your size, since a size number alone can hide a full size of variation.