What Is 39 in US Shoe Size? - FlyingMachineArena

The seemingly simple question of “what is 39 in US shoe size?” often arises when navigating the complexities of international sizing charts. While the number 39 might seem arbitrary, it represents a specific point on a well-established European sizing scale, and converting it to its US equivalent requires understanding the underlying systems. This article will delve into the intricacies of shoe sizing, focusing on the European to US conversion, and explore the factors that contribute to the discrepancies and the importance of accurate sizing for footwear.

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Understanding Shoe Sizing Systems

Shoe sizing, at its core, is a system designed to standardize the measurement of footwear to ensure a comfortable and proper fit. However, the absence of a universally adopted global standard has led to the development of several distinct sizing systems, each with its own unique methodology and numerical representation. The most prevalent systems encountered today include:

The Brannock System (US and UK)

The Brannock system, widely used in the United States and the United Kingdom, is based on the length of the foot in inches. It’s a linear measurement system where sizes typically increase by one-third of an inch per half-size increment. For example, a US men’s size 9 is one-third of an inch longer than a US men’s size 8.5. This system is known for its relative simplicity and its direct correlation to foot length.

US Men’s Sizing: This system starts with a base size (often around size 6) and increments by half-sizes. The scale generally runs from smaller sizes to larger sizes, with each full size representing approximately two-thirds of an inch in length.
US Women’s Sizing: US women’s sizing is typically offset by 1.5 sizes from the men’s scale. This means a US women’s size 8 is equivalent to a US men’s size 6.5. The incrementation of half-sizes remains the same.
UK Sizing: UK sizing is closely related to US men’s sizing but is generally offset by half a size. A UK size 8 is roughly equivalent to a US men’s size 8.5.

The European Sizing System (Continental or Paris Point)

The European sizing system, often referred to as the Continental system or Paris Point, is fundamentally different from the Brannock system. Instead of measuring foot length directly, it’s based on the length of the shoe’s insole, typically measured in millimeters. The unit of measurement used is the “Paris Point,” which is equivalent to two-thirds of a centimeter (approximately 0.26 inches). A key characteristic of this system is that it doesn’t typically include half-sizes; rather, it increments in full sizes.

The Paris Point: Each full size in the European system represents approximately 6.67 millimeters (2/3 cm). This means that a European size 39 is roughly 6.67mm longer in insole length than a European size 38.
No Standardized Offset: Unlike the US and UK systems, there isn’t a fixed, universally agreed-upon offset between European sizes and US or UK sizes. This is a primary reason why direct conversion can be confusing.
Common Usage: European sizing is prevalent throughout continental Europe and is also adopted by many international fashion brands.

The Mondopoint System

The Mondopoint system is a more modern and scientifically based sizing system that aims for greater accuracy and standardization. It directly measures the foot length in millimeters. It also incorporates foot width measurements, which is a significant advantage over other systems that often rely on generic width categories (narrow, medium, wide).

Direct Measurement: Mondopoint sizes are expressed as two numbers: the first being the foot length in millimeters, and the second (optional) being the foot width in millimeters. For instance, a Mondopoint size of 260/100 would indicate a foot length of 260mm and a width of 100mm.
Growing Adoption: While not yet as widespread as European or US sizing for consumer footwear, Mondopoint is increasingly used in athletic footwear, military boots, and by orthopedic specialists due to its precision.

Converting European Size 39 to US Shoe Size

Now, to address the core question: what is 39 in US shoe size? The conversion is not a simple mathematical formula due to the different measurement units and methodologies. However, by referencing standard conversion charts and understanding the general ranges, we can arrive at a close approximation.

General Conversion Guidelines

It’s crucial to note that shoe manufacturing varies, and even within the same sizing system, different brands can have slight variations in their fits. Therefore, these conversions should be used as a guide rather than an absolute rule.

European 39 to US Women’s: Generally, a European size 39 falls into the US women’s size 8 to 8.5 range. Some charts might place it precisely at an 8.5, while others lean towards an 8.
European 39 to US Men’s: European sizing for men is different. A European size 39 typically converts to a US men’s size 6.5 to 7. This is a significant difference compared to women’s sizing and highlights the importance of specifying the gender of the wearer.

Factors Influencing the Conversion

Several factors can influence the accuracy of any shoe size conversion:

Brand-Specific Sizing: As mentioned, different manufacturers have unique lasts (the foot-shaped mold around which a shoe is constructed) and sizing specifications. A size 39 in one European brand might fit differently than a size 39 in another.
Shoe Type: The intended use and design of a shoe can also impact how a size feels. For example, a running shoe might have a different fit profile than a formal dress shoe, even if both are labeled with the same size. Athletic shoes often have a more snug fit, while casual shoes might offer a bit more room.
Foot Shape and Width: The conversion charts primarily account for foot length. However, individuals have varying foot widths, arches, and volumes. A person with a wider foot might need to size up or look for brands that offer wider options, regardless of the length conversion.
Material and Construction: The materials used in shoe construction, such as leather, synthetic fabrics, or canvas, can stretch and conform to the foot differently over time. The thickness of the sole and the internal cushioning can also affect the perceived fit.
Measurement Variations: Even within the European system, the exact length of the insole for a size 39 can have slight variations between manufacturers.

The Importance of Accurate Shoe Sizing

Wearing shoes that are the wrong size can lead to a myriad of problems, ranging from discomfort to serious foot health issues. This underscores the importance of meticulously understanding shoe sizing, especially when purchasing footwear from international brands or online.

Comfort and Performance

The most immediate consequence of ill-fitting shoes is discomfort. Shoes that are too small can cause pinching, blisters, and general foot pain, making it difficult to walk or stand for extended periods. Conversely, shoes that are too large can lead to excessive friction, tripping hazards, and instability, compromising performance in athletic activities and daily life.

Foot Health

Long-term use of improperly sized shoes can contribute to more significant foot health problems, including:

Bunions and Hammertoes: Tight shoes can force the toes into unnatural positions, potentially leading to the development of bunions (a bony bump at the base of the big toe) and hammertoes (a bending of the toe joint).
Ingrown Toenails: Shoes that are too short or too narrow can put pressure on the toenails, causing them to grow into the surrounding skin.
Plantar Fasciitis: While not solely caused by shoe size, improper support and cushioning from ill-fitting shoes can exacerbate or contribute to plantar fasciitis, a common cause of heel pain.
Corns and Calluses: Friction and pressure points from poorly fitting shoes can lead to the formation of corns and calluses as the skin tries to protect itself.
Nerve Damage: In severe cases, chronic pressure from tight shoes can lead to nerve compression, causing pain, numbness, and tingling in the feet.

Practical Tips for Finding the Right Fit

Given the complexities, here are some practical tips to ensure you find the right US shoe size when dealing with European sizes like 39:

Consult Size Charts: Always refer to the specific size chart provided by the brand or retailer you are purchasing from. Look for their conversion chart that maps European sizes to US sizes.
Measure Your Feet: The most reliable method is to measure your foot length. Stand on a piece of paper with your heel against a wall, mark the longest part of your foot, and measure the distance from the wall to the mark. Do this for both feet, as they can differ slightly. Convert this measurement to inches or centimeters as needed for comparison with size charts.
Try Before You Buy (If Possible): Whenever feasible, try on shoes in person. Wear the type of socks you would typically use with the shoes. Walk around in them to assess comfort and fit.
Read Reviews: Customer reviews can offer valuable insights into a shoe’s true-to-size fit. Many reviewers will mention if a shoe runs large, small, or true to size.
Understand Width: If you have wider or narrower feet, pay attention to width designations (e.g., B for medium, D for wide in women’s; D for medium, E for wide in men’s) in addition to length.
Consider Online Retailer Policies: For online purchases, be aware of the return and exchange policies. This provides a safety net if the shoes don’t fit as expected.

In conclusion, the question “what is 39 in US shoe size?” is more than just a simple numerical conversion. It’s a gateway to understanding the global landscape of footwear sizing, the nuances of different measurement systems, and the critical importance of a proper fit for both comfort and long-term foot health. By employing careful measurement, consulting reliable charts, and being mindful of individual foot characteristics, one can confidently navigate the world of international shoe sizing and find the perfect pair.