Our Top Products Picks
| Product | Action |
|---|---|
 Shoe Sizer for Baby, Toddler & Kids | Home Foot Measuring Device From Baby to Big Kid (2T-6Y)Squatchi is a versatile children's shoe sizer that measures kids' feet at home | |
 Foot Measurement Device for Kids & Adults | Accurate Shoe Sizer Measuring Tool with High-Contrast Scale & Bonus Soft Tape Ruler, US EU Sizes for Home Store Use⚫️ 【ALL-IN-ONE FOR THE ENTIRE FAMILY】 Why buy two bulky devices? Our innovative foot measurement device accurately fits everyone from babies to adults (US 1-13). The jet-black high-contrast scale delivers Brannock-accurate readings, eliminating the guesswork from kids' fittings and online shoe shopping for the whole family. 📏 【BONUS SOFT TAPE FOR WIDTH & INSTEP】 Get the perfect fit beyond length! Includes a flexible tape ruler for measuring foot width and instep, ensuring complete compatibility with any shoe brand. It's your ultimate shoe measuring tool for mastering Squatchi-compatible sizing at home. 🚪【ULTRA-PORTABLE & SPACE-SAVING DESIGN】 Weighing only 100g, this lightweight and compact shoe sizer slips effortlessly into any bag. Its single-device design means no more clutter—take it to the store or use it at home as a growth tracker for your toddlers, all without the bulk of multiple tools. 🛡️ 【BUILT TO LAST & GROW WITH YOUR KIDS】 Crafted from 30% thicker, heavy-duty ABS plastic, our foot measuring device survives even the most energetic toddler stomps. Document precious milestones from first steps to teen years—it’s not just a tool; it's a durable keepsake of your child's growth. 🎯 【SHOP WITH CONFIDENCE - 30-DAY TRIAL】 Heel-aligned design guarantees a perfect measurement every time. Backed by our worry-free 30-day trial. If you are not completely satisfied, simply contact us for a complete refund. Never order the wrong shoe size again! | |
 2 Pcs Shoes Size Measuring Devices, Foot Measurement Device For All Ages (1 Black Classic, 1 Yellow Bear)【Perfect Package】This package includes 1 piece of black classic foot measuring device for all ages and 1 piece of small yellow bear foot measuring device for boy and girls, which provides convenient shoes size measurement for you and your family in online shopping. 【Accurate Foot Measurement】The black classic foot measuring device has separate men's size, women's size and children’s size to get accurate measurements, so you and your family can buy more suitable and accurate shoes. 【Essential Foot Care Tool】The small foot measuring device for children with a lovely yellow bear ensures precise foot length tracking, helping parents monitor their children’s foot growth and select the right size shoes. This essential tool guarantees a healthy foot development and providing comfort as they grow. 【Easy to Use】Just place feet in this shoes size measuring device and push measuring board to read accurate size. 【High-Quality & Durable Material】This package of foot measuring device is made of lightweight and sturdy ABS plastic with smooth edges and clear scale markings. This durable and reliable shoe sizer is designed for regular use, providing long-lasting accuracy. | |
 Weewooday 2 Pcs Foot Measurement Devices Shoes Size Measuring Devices with Tape and Ring Sizer, US Size(Blue,Classic)Package Content: the package comes with 1 piece of black adult foot measuring device, 1 piece of small blue shoe feet measuring ruler sizer, a piece of ring sizer and a piece of measuring tape, a complete combination for you and your family in online shopping to provide convenient measurement Widely Applied: our set of measurement tools products are suitable for the whole family; Separate men's, women's sizes and cm against, to get accurate measurements, so you and your family can buy more suitable and accurate clothes or shoes Trustworthy Material: adult foot measuring device is made of reliable ABS material, light in weight, not easy to break, clear scale markings, measuring soft tape is mainly made of PVC and fiberglass, soft and detailed Interesting Growth Record: our blue shoe feet measuring ruler can record the growth process of feet, accurate size, do not worry about buying the wrong size shoes, not only to bring you and your family convenience, but also to become a witness to your family's step by step growth Practical measurement accessories: soft ruler can measure waist, bust, leg, hip, height, etc., to assist you to buy accurate clothes, but also to record your body data at different times to help you determine whether to grow fat or become thin, ring ruler can accurately help you select jewelry | |
 Foot Measurement Device | Kids Foot Length Measure Gauge Shoe Sizer Measuring for Infants Kids Men Women Adults | US Standard Shoe SizeThe foot measurement device Applicable to Man Woman and Youth,US Size,and accurate way to keep track of your child's foot size. NEVER BUY THE WRONG SIZE SHOE AGAIN: This shoe sizer measuring devices will make sure you never buy the wrong size shoes for your kids. You can skip the traffic and the lines by buying kids shoes online. Shoe measuring devices for your family : Using it as a foot measuring tool is a great keepsake for your family. It is a growth chart and a time-saving tool. Our sturdy plastic Foot measuring for kids is designed to last through your child’s quick growing phase. easy to store as a memoir and keepsake. Shoes measurement device is easy and convenient to carry anywhere. You can easily carry it to shoemakers or in the shoe stores for the perfect measurement of your child's shoe. | |
 Vaikby Foot Measurement Device, Shoe Sizer Measuring Devices Ruler Sizer for Kids Adults, Buy Kids Shoes Online Simply with a Foot Measuring Device【US STANDARD SHOE SIZE】: our feet length measuring rulers are designed with clear US size printed, come with the corresponding centimeter scale, suitable for women and men, adults and children, give a good visibility, easy and quick to be read in a short time, can bring you an accurate result. 【SIMPLE OPERATION】: barefoot, put the ruler on a flat surface, put the foot in the shape of the ruler, the heel is close to the rear of the ruler, the toes are straight and flat, move the front measurement board to the toe, tightly paste. Read the data. You will get the length of the foot and the size of the corresponding shoe. 【PRACTICAL GIFTS】: This nifty foot measuring device comes with a detachable, and retractable cloth measuring tape in inches and centimeters. Keep in mind most kids shoe brands don’t have width size charts for kids so this measuring tape can really come in handy. Now you can buy shoes with confidence, even for hard to fit growing feet. 【EASY TO CARRY AND STORE】: We will give you a retractable storage bag to make your foot measuring tool easy to carry with you. There is a hanging hole on the top of the device for easy storage. 【WHAT YOU WILL GET】: 1PCS shoe measuring toool, 1PCS black tape measure, 1PCS retractable storage bag. Better service guarantee: Vaikby brand strives for 100% customer satisfaction |
You have found the perfect pair of boots on a boutique site based in Milan, or perhaps you are eyeing a limited sneaker drop from a Japanese retailer. The size listed is 43. You usually wear a US size 9. The logic seems plausible enough—they are both average sizes, right?
Pause before you click 'Purchase.'
In my years as an editorial stylist, I have seen more wardrobe malfunctions caused by incorrect footwear sizing than any ill-fitting blazer. Footwear is the foundation of your silhouette; if the mechanics of the fit are off, your stride suffers, and so does your ROI (Return on Investment) for that piece.
The question "Is size 9 the same as 43" is one of the most common queries I field, and the short answer is: almost certainly not. In fact, depending on your gender and the brand, that assumption could leave you with shoes that are anywhere from one to three sizes too big.
In this guide, we are going to dismantle the confusion between US and EU sizing systems, analyze the fit mechanics of global brands, and ensure your next international purchase fits like it was bespoke.
The Quick Verdict: Is 43 a US 9?
If you are looking for the 'TL;DR' so you can quickly checkout, here is the pragmatic breakdown. Is size 9 the same as 43?
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For Men: Generally, no. A US Men's 9 is typically a EU 42. A EU 43 usually translates to a US Men's 10. If you order a 43 thinking it is a 9, you will likely end up with a shoe that has too much volume in the toe box, leading to heel slippage.
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For Women: Absolutely no. A US Women's 9 is roughly a EU 39 or 40. A EU 43 in women's sizing (which is rare in standard retail but common in extended sizing) would be equivalent to a US Women's 12.
While this provides a baseline, fit is not static. It is determined by the last (the mold the shoe is built on), the material composition, and the specific sizing scale used by the manufacturer.
The Golden Rule of Conversion
Before we dive into the data, remember this: US sizing is based on inch intervals, while EU sizing is based on the 'Paris Point' (millimeters). They do not align perfectly, which is why half-sizes are critical in US sizing but often absent in EU sizing.
Head-to-Head: US vs. EU Sizing Data
To understand the discrepancy, we need to look at the raw numbers. This table illustrates the typical conversion for standard foot lengths. Note the shift between Men's and Women's sizing—this is where most international shoppers lose money on return shipping.
| US Men's Size | US Women's Size | EU Size (Approx) | UK Size (Approx) | CM (Foot Length) |
|---|---|---|---|---|
| 8 | 9.5 | 41 | 7 | 25.4 |
| 8.5 | 10 | 41-42 | 7.5 | 25.8 |
| 9 | 10.5 | 42 | 8 | 26.0 |
| 9.5 | 11 | 42-43 | 8.5 | 26.7 |
| 10 | 11.5 | 43 | 9 | 27.0 |
| 10.5 | 12 | 43-44 | 9.5 | 27.3 |
| 11 | 12.5 | 44 | 10 | 27.9 |
Analyst Note: As you can see, a size 43 aligns much closer to a US Men's 10 than a 9. If you are a true US 9, a 43 will likely feel like a boat. Use our Shoe Size Converter (Intl) for a brand-specific calculation.
The Mechanics of Measurement: Barleycorn vs. Paris Point
Why is this so difficult? It comes down to the history of the measuring tape. As a stylist, I look at the construction of a garment; for shoes, we look at the unit of measure.
The US System (The Barleycorn)
US sizing is archaic. It is based on the 'barleycorn' unit, where one full size equals 1/3 of an inch (approx 8.46mm). The scale starts at a base measurement and adds barleycorns. This is why the difference between a 9 and a 10 is significant in volume, not just length.
The EU System (The Paris Point)
European sizing is more linear but less precise for small increments. It uses the 'Paris Point,' which is exactly 6.67mm (2/3 of a centimeter).
Because 6.67mm (EU step) does not divide evenly into 8.46mm (US step), there is rarely a perfect match. A US 9 sits awkwardly between a EU 42 and 43.
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Scenario: If you are a US 9, a EU 42 might feel slightly snug (like a performance fit), while a EU 43 provides a 'comfort fit' (or simply too much room).
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My Recommendation: If you are buying leather boots or loafers that will break in, size down to the 42. If you are buying synthetic sneakers that won't stretch, you might need to hunt for a rare 42.5 or risk the 43 with a thicker sock.
Performance vs. Luxury: Brand Discrepancies
Not all 43s are created equal. In the world of high-ROI wardrobes, we distinguish between Athletic Sizing and Designer Sizing.
Athletic Sizing (Nike, Adidas, Hoka)
Sportswear brands generally run small and narrow.
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Nike: A US 10 is typically a EU 44. A US 9 is a EU 42.5.
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Adidas: Notorious for weird conversions. A US 9 is often labeled a '42 2/3'.
If you are using the Sneaker Drop List to cop a new release, check that specific brand's chart. Do not assume a 43 is safe if you are a US 9—you will likely be swimming in them.
Designer Sizing (Gucci, Common Projects, Balenciaga)
This is where the "Made in Italy" factor changes the math. Luxury footwear is often constructed on lasts that run large.
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Common Projects: Known to run a full size large. A US 10 wearer often fits perfectly in a EU 42 or 43.
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High Heels: For my clients looking at Louboutin or Manolo Blahnik, fit is critical for stability. Refer to our
Heel Height Guide, but generally, luxury heels run true to EU sizing but narrow. A US Women's 9 should look for a 39 or 39.5, never a 43.
Stylist Tip: If you are investing in luxury leather, aim for the smaller conversion (EU 42 for a US 9). Leather stretches; synthetic liners do not.
The "CN" Trap: Chinese vs. European Sizing
With the rise of global e-commerce, I am seeing a massive influx of confusion regarding "CN" sizing. Many accessible retail sites (and even some dropshippers) list sizes as CN, which looks deceptively like EU sizing.
Here is the danger:
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CN 43 is often based on the foot length in millimeters (265mm or 270mm depending on the manufacturer standard).
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EU 43 is based on the Paris Point.
They are not always identical. A CN 43 is often built for a wider, shorter foot compared to a standard EU 43. If you see "43" on a tag, verify if it is EU or CN. If it is a generic sizes chart from an Asian manufacturer, a CN 43 might actually fit closer to a US 9.5, whereas a true European designer 43 fits a US 10. Always look for the measurement in centimeters (CM) or millimeters (MM) to be safe.
How to Measure Your True Size
To stop guessing and start architecting a wardrobe that functions, you need your Mondo point (foot length in CM). Ignore the arbitrary numbers (9, 43, UK 8) for a moment.
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Trace: Place a piece of paper against a wall. Stand on it with your heel flush against the wall. Trace the longest part of your toes.
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Measure: Measure from the edge of the paper (heel) to the longest toe mark in centimeters.
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Calculate:
- 26 cm = Roughly US Men's 8.5 / EU 42
- 27 cm = Roughly US Men's 10 / EU 43
- 28 cm = Roughly US Men's 11 / EU 44
If your foot measures 26.5cm, you are a true US 9. In this case, a EU 43 (usually suited for 27.5cm feet) will be significantly too large. You should be targeting a EU 42.
So, is size 9 the same as 43? In the vast majority of cases, the answer is a hard no.
A US Men's 9 is best converted to a EU 42, while a EU 43 is much closer to a US Men's 10. For women, the gap is even wider. Treating these sizes as interchangeable is a recipe for returns and blistered heels.
When building a functional wardrobe, precision is luxury. Don't rely on habit; rely on metrics. Check the brand's specific size chart, know your foot length in centimeters, and remember that leather stretches while synthetics do not.
For more specific conversions across brands, utilize our Shoe Size Converter (Intl) before making that final investment.