Shoes Size Guide for the Mulebuy Spreadsheet
Why Shoe Sizing Is So Complicated
Chinese shoe manufacturing follows its own sizing logic that does not cleanly map to US, UK, or EU standards. A size 42 in one factory might fit like a US 8.5, while another factory's 42 fits like a US 9. The Mulebuy Spreadsheet attempts to provide conversions, but accuracy varies by seller.
The safest approach is to ignore size numbers entirely and focus on millimeter measurements. Most spreadsheet entries include an insole length column. Measure your foot from heel to longest toe in millimeters, then add 5 to 10 millimeters for comfort space. Match that total to the insole length in the spreadsheet.
Width is the hidden variable. Chinese lasts tend to be narrower than Western standards. If you have wide feet, size up half a size regardless of length measurements. Some spreadsheet entries note "narrow fit" or "wide fit" in the description column.
Pro Tip
Measuring Your Foot Correctly
Stand on a piece of paper with your heel against a wall. Mark the longest point of your foot. Measure the distance in millimeters, not inches. Do this for both feet; most people have one foot slightly larger. Use the larger measurement for sizing.
Measure in the evening when your feet are slightly swollen from daily activity. Morning measurements can lead to tight fits. Wear the type of socks you plan to wear with the shoes. Thick socks add 3 to 5 millimeters, which matters for snug-fitting sneakers.
For boots and high-tops, consider ankle circumference if you have muscular calves. Some spreadsheet entries include shaft height and circumference measurements. Ordering boots without checking these numbers is a common mistake that leads to uncomfortable wear.
Category-Specific Sizing Notes
Sneakers generally run true to the millimeter insole length. However, the toe box shape varies by model. Jordan 1s have a narrow toe box that compresses wide feet. Yeezy 350s are notoriously snug and many shoppers size up half a size. Check the spreadsheet batch notes for model-specific advice.
Slides and sandals require different logic. Since there is no enclosed toe box, length matters less and width matters more. Size down if you are between sizes for slides. The strap should hold your foot without your toes hanging over the front edge.
Boots need extra room for thick socks and toe movement. Add 10 to 15 millimeters to your foot measurement rather than the standard 5 to 10. Also verify the shaft circumference against your calf measurement. The spreadsheet shoes category often includes these details for boot entries.
Pro Tip
What to Do When Your Shoes Do Not Fit
If shoes arrive too small, you can try removing the insole to gain a few millimeters of space. This works for sneakers and casual shoes but not for boots or sandals. Another trick is wearing thin socks for the first few weeks to stretch the upper material slightly.
Oversized shoes are harder to fix. Insoles, heel grips, and tongue pads can reduce volume but only by a limited amount. If a shoe is more than half a size too big, reselling is usually the best option. The shoes category in the spreadsheet has high resale demand.
Prevent sizing disasters by reading QC comments in community forums. Other buyers often post fit reviews with their actual foot measurements. This crowdsourced data is more reliable than generic size charts. The spreadsheet community regularly updates entries with fit feedback.
Community Rating
Frequently Asked Questions
Should I size up for all Chinese shoes?
Not necessarily. Measure your foot in millimeters and compare to the insole length in the spreadsheet.
Are Chinese sizes smaller than US sizes?
Generally yes by half a size, but it varies by factory. Always check the specific entry measurements.
How much extra space should I add to my foot measurement?
Add 5 to 10 millimeters for sneakers, and 10 to 15 millimeters for boots.
What if the spreadsheet does not list insole length?
Ask in community forums or message the spreadsheet maintainer. Do not guess based on size numbers alone.