We’ve all been there. You’re scrolling through an online boutique, your heart set on a pair of stunning heels or the perfect sneakers. The design is flawless, the color is exactly what you’ve been hunting for, and the price feels like a steal. Then, you look down at the size chart. It’s a European 36. Your heart sinks. You know your US size, you know your UK size, but when it comes to European sizing, you’re suddenly lost in a sea of numbers. Should you size up? Size down? Is a 36 a 5 or a 6? The confusion is real, and it’s one of the most common hurdles in international shoe shopping. Let’s clear up that confusion once and for all, starting with the simple answer: in US women’s sizes, a European 36 typically converts to a size 5.5 or 6, depending on the brand and the width of your foot.

Why Is There No Single, Universal Answer?

If you were hoping for a one-size-fits-all answer, I have to be honest with you: it doesn’t exist. The conversion from EU 36 to US women’s sizing isn’t an exact science, and that’s because shoe sizing systems were developed independently in different parts of the world. The US system, for example, is based on barleycorns (an ancient unit of measurement), while the European system is based on the Paris point, which is exactly two-thirds of a centimeter. These two systems don’t line up perfectly, which is why you’ll see slight variations. Most brands, however, have standardized the conversion to a range. For a women’s EU 36, the most common US equivalent is a 5.5. Some brands will call it a 6, and a few, particularly those that run small, might even list it as a 5. The key takeaway here is that you should never assume a conversion is universal. Always, always check the brand’s specific size chart.

The Numbers Behind the Sizes

To understand the conversion better, let’s look at the actual measurements. A European size 36 is designed to fit a foot that measures approximately 22.6 to 23 centimeters in length. In inches, that’s roughly 8.9 to 9.05 inches. Now, a US women’s size 5.5 is built for a foot that’s about 22.8 centimeters, and a US 6 is for a foot around 23.2 centimeters. See the overlap? That’s why EU 36 sits right in the grey zone between a US 5.5 and a US 6. If your foot measures exactly 22.8 cm, you’re a perfect EU 36 and a perfect US 5.5. If your foot is a hair over 23 cm, you might find that US 5.5 is too tight and US 6 is the better match. This is why knowing your exact foot length in centimeters or inches is far more reliable than relying on a size number alone.

How to Measure Your Foot Like a Pro

Before you click “add to cart,” take five minutes to measure your foot at home. It’s the single best way to avoid the hassle of returns. Here’s how to do it right:

  • Prepare your tools: You’ll need a piece of paper, a pen or pencil, a ruler, and a wall.
  • Trace your foot: Tape the paper to the floor against a wall. Place your heel against the wall and stand naturally. Have a friend trace the outline of your foot, keeping the pencil straight up and down. Do not angle the pencil inward under your foot.
  • Measure the length: Use the ruler to measure from the very tip of your longest toe (which might not be your big toe!) to the back of your heel. Write down this number in both centimeters and inches.
  • Measure both feet: It’s very common for one foot to be slightly larger than the other. Always use the measurement of your larger foot when choosing a size.
  • Add a little wiggle room: For most shoe styles, you want about a thumb’s width (roughly 0.5 cm or 1/4 inch) of space between your longest toe and the end of the shoe. So, if your foot is 23 cm, you might actually want a shoe that’s built for a 23.5 cm foot, which could push you toward a EU 37 or a US 6.5.

Practical Tips for Buying EU 36 Shoes as a US Woman

Armed with your measurements, you’re ready to shop. But there are a few more nuances to keep in mind to ensure a perfect fit. Here are my best tips for navigating the EU 36 to US women’s conversion:

  • Know your width: European sizing generally assumes a standard, medium width (B in the US). If you have narrow or wide feet, the conversion becomes even trickier. A EU 36 might fit your length perfectly but be too tight if your feet are wide. Look for brands that offer width options, or consider sizing up to a 37 and using an insole to take up the extra length.
  • Consider the shoe type: Heels, flats, sneakers, and boots all fit differently. For pointy-toed heels, you might need to go up a half size to avoid cramping your toes. For sandals or open-toe shoes, you have more leeway. For boots, consider the thickness of the socks you’ll wear. If you plan to wear thick wool socks, a EU 36 might be too snug, and a 37 could be your new best friend.
  • Read reviews like a detective: Before you buy, scroll through the reviews. Look for comments from other women who wear a US 5.5 or 6. Do they say the shoe runs true to size, runs small, or runs large? This real-world feedback is gold. A brand might list a EU 36 as a US 6, but if every review says “size up,” you know to go for the 37.
  • Check the return policy: No matter how careful you are, there’s always a chance the fit won’t be perfect. Make sure the retailer has a hassle-free return or exchange policy, especially when ordering from overseas. Some European brands have different return windows than US stores, so read the fine print.

Brand-Specific Quirks to Watch Out For

Certain brands are notorious for their sizing quirks, and knowing these can save you a lot of frustration. For instance, many Italian luxury shoe brands (like Prada or Gucci) tend to run slightly small. If you’re a true EU 36, you might find their 36 is a bit snug, and a 36.5 or 37 is the better fit. On the other hand, some athletic brands like Nike and Adidas often run a half size large. A Nike women’s size 6 might feel closer to a 6.5, meaning their size 5.5 could be your perfect EU 36 match. Spanish brands like Zara and Mango often follow a strict EU sizing chart, so their 36 is usually a true 5.5. The bottom line? When you find a brand you love, stick with their specific sizing guide. Over time, you’ll build a mental map of how different labels fit your feet.

A Quick Reference Cheat Sheet

For a quick mental reference when you’re browsing, here’s a general rule of thumb for EU to US women’s conversions around the 36 mark:

  • EU 35: US 4.5 to 5
  • EU 36: US 5.5 to 6
  • EU 37: US 6.5 to 7
  • EU 38: US 7.5 to 8

Use this as a starting point, not a final answer. Always verify with the brand’s chart and your own foot measurements.

Final Thoughts: Confidence in Your Conversion

So, what shoe size is 36 in US women’s? It’s a 5.5. It’s a 6. It’s a number that depends on your foot, the brand, and the style. The confusion you felt at the beginning of this article is completely normal, but now you have the tools to handle it. Don’t let a size number intimidate you. Measure your foot, understand the context of the shoe, and lean on reviews. With a little bit of knowledge and a few simple tricks, you can confidently order that gorgeous pair of European shoes and have them fit like they were made for you. Happy shopping, and may your next delivery be a perfect fit.