New Era Size Guide: A Comprehensive Overview (Updated 02/11/2026)
Navigating New Era cap sizes requires careful attention, as proper fit enhances comfort and style.
Always consult the size chart before purchasing, noting a 15% restocking fee applies to returns/exchanges.

New Era Cap Co., established in 1920, has evolved from a Buffalo-based headwear manufacturer into a global icon synonymous with quality, style, and particularly, baseball. For over a century, New Era has been the official cap provider for Major League Baseball, cementing its place in sports and fashion culture. Understanding the nuances of New Era sizing is crucial for anyone seeking the perfect fit, as their caps cater to a diverse range of head sizes and preferences.
The brand’s popularity extends beyond the baseball diamond, embraced by streetwear enthusiasts, fashion-conscious individuals, and collectors alike. This widespread appeal necessitates a comprehensive understanding of their sizing system, which differs slightly across various cap styles – from the structured 59FIFTY to the more relaxed 39THIRTY and 9FIFTY.
This guide aims to demystify New Era sizing, providing detailed charts and instructions to help you find your ideal cap. We’ll cover everything from measuring your head accurately to interpreting the size charts, considering different head shapes, and understanding material variations. Paying attention to the country of origin and material composition can also influence fit and comfort. Remember to always check the specific size chart on the product page, as variations can occur between models.
Understanding New Era Cap Styles
New Era offers a diverse range of cap styles, each with a unique fit and structure. The 59FIFTY, the brand’s flagship model, features a high crown and a fully structured front panel, providing a classic, fitted look. It’s known for its firm feel and is often favored by those who prefer a secure fit. Conversely, the 39THIRTY boasts a lower profile, a curved brim, and a more relaxed, unstructured front panel, offering a comfortable, everyday wear.
The 9FIFTY is another popular choice, characterized by its adjustable snapback closure and a slightly higher crown than the 39THIRTY. This style provides a blend of structure and comfort, making it versatile for various occasions. Understanding these core differences is vital when selecting a New Era cap, as sizing can vary between styles.
Beyond these core models, New Era offers variations like the 59FIFTY Fitted, 9FIFTY Stretch, and various seasonal collections. Each style may have subtle differences in fit and construction. Always refer to the specific size chart associated with the cap style you’re interested in to ensure accurate sizing. Considering these nuances will help you find a New Era cap that perfectly complements your style and provides optimal comfort.
New Era 59FIFTY Size Chart
The New Era 59FIFTY is a fitted cap, meaning it doesn’t have an adjustable strap. Therefore, accurate head circumference measurement is crucial. The chart below correlates head size with New Era’s hat size designations. Sizes are typically represented numerically, such as 6 1/2, 7, 7 1/4, and so on.
Here’s a general guideline, though slight variations can occur:
- 6 1/2: Approximately 52 cm (20 1/2 inches)
- 7: Approximately 53.9 cm (21 2 inches)
- 7 1/4: Approximately 55.8 cm (22 inches)
- 7 3/8: Approximately 56.8 cm (22 3 inches)
- 7 1/2: Approximately 57.7 cm (22 3/4 inches)
- 7 3/4: Approximately 58.7 cm (23 1/8 inches)
- 8: Approximately 60.3 cm (23 3/4 inches)
Important Note: These are approximate conversions. It’s always best to measure your head precisely and compare it to the official New Era size chart found on their website or product pages. Due to manufacturing tolerances, slight discrepancies can exist. If your measurement falls between sizes, consider going up a size for a more comfortable fit, especially if you prefer a slightly looser feel.

Measuring Your Head for a New Era Cap
Accurate head measurement is paramount when selecting a New Era cap, particularly the 59FIFTY fitted style. Use a flexible measuring tape – a cloth or vinyl tape is ideal. Avoid using metal tapes, as they aren’t as adaptable to the head’s shape.
Procedure: Wrap the measuring tape around your head, approximately one inch (2.5 cm) above your eyebrows and ears. This is the widest part of your head. Ensure the tape is level all the way around, neither too tight nor too loose. Maintain a comfortable, snug fit.
Record the measurement in centimeters or inches. If using centimeters, convert to inches by dividing by 2.54. It’s helpful to have someone assist you for a more accurate reading. Repeat the measurement a couple of times to confirm consistency.
Consider Hair: If you frequently wear your hair in a specific style (e.g., a high ponytail or with significant volume), measure your head with your hair styled as such. This will ensure a proper fit even when wearing your preferred hairstyle. Round up to the nearest quarter inch if your measurement falls between sizes.
New Era Cap Size in Centimeters
Understanding the New Era sizing system in centimeters is crucial for international customers or those preferring metric measurements. New Era caps, particularly the popular 59FIFTY, utilize head circumference as the primary sizing indicator. This chart provides a general guideline, but slight variations may occur between models.
Size Breakdown: A head circumference of 52cm typically corresponds to a size 6 1/2. 53.9cm equates to a size 7. 55.8cm is a size 7 1/4. 56.8cm represents a size 7 1/2. 57.7cm is a size 7 3/4. Finally, 58.7cm corresponds to a size 8.
Important Note: These measurements are approximate. Always refer to the specific size chart provided on the product page, as variations can exist. If your measurement falls between two sizes, it’s generally recommended to choose the larger size for a more comfortable fit.
Accuracy is Key: Ensure accurate head measurement (as detailed in the ‘Measuring Your Head’ section) before consulting this chart. A properly measured head circumference guarantees a better-fitting New Era cap, enhancing both comfort and style. Remember that material and model can influence fit.
New Era Cap Size in Inches

For customers accustomed to imperial measurements, understanding New Era cap sizes in inches is essential for a perfect fit. Similar to the centimeter system, sizing is based on head circumference. This guide offers a convenient conversion, but always prioritize the specific size chart linked on the product’s page, as slight discrepancies can occur between cap styles.

Size Equivalents: A head circumference of 20 1/2 inches typically corresponds to a size 6 1/2. 21 1/4 inches equates to a size 7. 21 3/4 inches is a size 7 1/4. 22 1/4 inches represents a size 7 1/2. 22 3/4 inches is a size 7 3/4. Finally, 23 inches corresponds to a size 8.
Choosing the Right Size: If your head measurement falls between two sizes, it’s generally advisable to select the larger size to ensure a comfortable, non-constricting fit. A snug, but not tight, fit is ideal.
Precise Measurement Matters: Accurate head measurement (refer to the ‘Measuring Your Head’ section) is paramount. Using an incorrect measurement will lead to an ill-fitting cap. Always double-check your measurement before referencing this chart. Remember that material composition can also affect the overall fit of the cap.
New Era 39THIRTY Size Guide
The New Era 39THIRTY is a popular fitted cap known for its structured crown and relaxed fit, differing from the more traditional 59FIFTY. Sizing for the 39THIRTY utilizes a similar head circumference-based system, but understanding its unique construction is key to achieving the optimal fit. This style features a stretch fit, offering some flexibility.
Size Range & Considerations: The 39THIRTY typically comes in sizes ranging from 6 7/8 to 8, though availability may vary. Due to the stretch fit, a slightly looser fit is generally preferred compared to the 59FIFTY. However, avoid a fit that is excessively loose, as it can compromise the cap’s structure and appearance.
Finding Your Size: Refer to the detailed size chart provided on the product page for the most accurate measurements. These charts often correlate head circumference (in inches or centimeters) to specific 39THIRTY sizes.
Stretch Fit Advantage: The stretch fit allows for minor adjustments, but it’s crucial to select a size that closely matches your head circumference. If you’re between sizes, consider trying both if possible, or opting for the smaller size for a more secure fit.
New Era 9FIFTY Size Chart
The New Era 9FIFTY cap is celebrated for its adjustable strap and higher crown profile, offering a comfortable and versatile fit for a wide range of head sizes. Unlike fitted caps like the 59FIFTY, the 9FIFTY’s adjustable strap allows for a customized fit, making it a popular choice for those unsure of their exact size.

Size Range & Adjustability: 9FIFTY caps are generally available in sizes ranging from 6 7/8 to 8, and sometimes larger. The key feature is the adjustable strap at the back, which allows you to fine-tune the fit to your head circumference. This adjustability provides a greater margin for error when selecting a size.
Using the Size Chart: While adjustable, referencing the New Era 9FIFTY size chart is still recommended. The chart correlates head circumference to a general size range. Use a soft measuring tape to accurately measure your head circumference.
Finding the Sweet Spot: When adjusting the strap, aim for a snug but comfortable fit. The cap should sit securely on your head without feeling overly tight or causing pressure. Ensure the brim is level and the cap feels balanced.
New Era Kids’ Size Guide
Finding the perfect fit for your child’s New Era cap is crucial for both comfort and style. Kids’ head sizes vary significantly, so relying on age alone isn’t sufficient. New Era offers a dedicated kids’ size guide to ensure a proper and secure fit for younger fans.
Sizing Differences: Kids’ caps differ from adult sizes, featuring smaller crown heights and circumferences. New Era kids’ sizes typically range from sizes for infants to youth, often denoted by age ranges (e.g., 0-3 months, 2-4 years, 5-8 years, 8-20 years).
Measuring for Accuracy: Accurate measurement is key. Use a soft measuring tape to measure your child’s head circumference, keeping the tape level just above the eyebrows and ears. Refer to the official New Era kids’ size chart, which correlates head circumference to the appropriate size.
Adjustable Options: Many New Era kids’ caps, like the 9FIFTY Youth, feature adjustable straps, offering flexibility as your child grows. However, fitted caps require a precise measurement for the best fit. Always prioritize comfort and avoid caps that are too tight.
New Era Women’s Size Guide
New Era recognizes that women’s head sizes and preferences differ from those of men, offering specialized sizing options for a comfortable and stylish fit. Understanding these nuances is key to selecting the perfect cap.
Fitted vs. Adjustable: New Era provides both fitted and adjustable caps in women’s sizes. Fitted caps require precise head circumference measurements, while adjustable options, like the 9FIFTY, offer greater flexibility. Many women prefer a slightly smaller crown height than standard men’s caps.
Size Range & Measurement: Women’s sizes generally correspond to hat sizes ranging from 6 7/8 to 7 5/8, correlating to specific head circumference measurements in inches or centimeters. Accurate measurement is vital – use a soft tape measure around the largest part of your head.
Specific Styles: Certain New Era styles, like the 39THIRTY, are particularly popular among women due to their lower profile and comfortable stretch fit. Always consult the specific size chart for the chosen style, as variations may exist. Prioritize comfort and a secure, yet not overly tight, fit.
New Era Hat Sizing for Different Head Shapes
Beyond simple head circumference, understanding your head shape significantly impacts New Era cap fit. Not all heads are created equal, and accounting for shape ensures optimal comfort and appearance.
Round Oval: Individuals with round oval head shapes generally find a good fit with standard New Era cap sizes. The cap will sit evenly and comfortably without pressure points. This is the most common head shape.

Round Square: Those with round square head shapes, characterized by a wider forehead and temples, may benefit from caps with a slightly deeper fit. This prevents the cap from riding up or feeling too tight across the forehead.
Flat Oval: Individuals possessing flat oval head shapes, with a flatter top and wider sides, often require caps with a shallower fit. A deeper fit can create pressure and discomfort. Consider styles designed for a lower profile.
Square Oval: Square oval shapes, featuring a strong jawline and wider temples, may find that adjustable caps offer the best customization. Experimenting with different adjustments is key to finding the perfect fit.

Country of Origin & Material Considerations
New Era caps originate from diverse manufacturing locations, with a significant portion currently produced in China. While origin doesn’t directly impact sizing, material composition profoundly affects fit and feel. Understanding these nuances is crucial for selecting the ideal cap.
Wool Blend Caps: The classic 59FIFTY often features a wool blend construction. Wool offers durability and a structured fit but can shrink slightly with exposure to moisture. Consider this when determining size, potentially opting for a slightly larger size initially.
Polyester Caps: Many modern New Era caps utilize polyester or polyester blends. Polyester is moisture-resistant, minimizing shrinkage, and provides a lighter, more breathable feel. These caps generally maintain their size and shape consistently.
Cotton Caps: Cotton caps offer excellent comfort and breathability. However, like wool, cotton is susceptible to shrinkage. Pre-shrinking processes are often applied, but some minimal shrinkage may still occur after washing.

Material Blend Impact: Blends combine the benefits of different materials. A cotton-polyester blend, for example, offers a balance of comfort, durability, and minimal shrinkage. Always check the label for specific material composition.
New Era Size Chart for Specific Models (e.g., 59Fifty)
New Era’s sizing isn’t universal; variations exist between models like the 59FIFTY, 39THIRTY, and 9FIFTY. The 59FIFTY, a structured cap, typically uses head circumference as the primary sizing metric. A size 7, for instance, corresponds to approximately a 22.86-inch head circumference.
59FIFTY Size Breakdown: Size 6 1/8 (52cm), 6 7/8 (53.9cm), 7 (55.8cm), 7 1/8 (56.8cm), 7 1/4 (57.7cm), 7 3/8 (58.7cm). It’s vital to accurately measure your head before selecting a 59FIFTY, as its structured fit allows for less adjustment.
39THIRTY & 9FIFTY Variations: The 39THIRTY, featuring a fitted but more relaxed profile, and the 9FIFTY, with an adjustable snapback, offer more flexibility in fit. These models often have slightly different size charts, so always refer to the specific chart for the model you’re considering.
Consult Model-Specific Charts: New Era provides detailed size charts on their website and product pages. These charts often include both centimeter and inch measurements, ensuring a precise fit. Prioritize checking the chart for that specific cap model.
Return and Exchange Policies Regarding Sizing
New Era’s return and exchange policies are crucial to understand, particularly when sizing is a concern. Generally, New Era accepts returns and exchanges of unworn, unwashed merchandise with original tags attached, within a specified timeframe – typically 30 days from the purchase date.
Restocking Fees: However, a significant detail to note is the application of a 15% restocking fee on all returns and exchanges. This fee is deducted from the refund amount and accounts for the processing and re-shelving of the returned item. This policy underscores the importance of accurate sizing before purchase.
Sizing Disputes: If you receive a cap that doesn’t fit, New Era will typically facilitate an exchange for the correct size, subject to availability. It’s advisable to keep all original packaging and proof of purchase for a smooth return or exchange process.
Final Sale Items: Be aware that certain items, such as customized caps or those purchased during final sales, may be ineligible for return or exchange. Always review the specific return policy details on New Era’s website or the product page before completing your order.
Finding the Size Chart on Product Pages
Locating the New Era size chart is straightforward on their official website and authorized retailer pages. Typically, you’ll find a dedicated link or button labeled “View Size Chart” directly on the product page for each cap style. This link is strategically placed near the size selection options, ensuring easy access before you make a purchase.
Chart Accessibility: Clicking this link will open a detailed size guide, often presented as a pop-up window or a new tab. The chart usually displays head circumference measurements in both centimeters and inches, corresponding to specific cap sizes (e.g., 6 7/8, 7, 7 1/4).
Model-Specific Charts: Importantly, New Era offers different size charts for various cap models – 59FIFTY, 39THIRTY, 9FIFTY, and others. Ensure you’re viewing the chart relevant to the specific cap you intend to buy, as sizing can vary slightly between styles.
Visual Cues: Some product pages may also include visual guides or instructions on how to accurately measure your head circumference, further assisting you in selecting the correct size. Always prioritize checking the size chart before finalizing your order to minimize the chances of needing a return or exchange.
Specialized Bicycle Frame Size Guide (Related to New Era Sizing Principles)
While seemingly disparate, bicycle frame sizing shares fundamental principles with New Era cap sizing: accurate measurement and matching to a standardized chart. Specialized, a leading bicycle manufacturer, utilizes height ranges to recommend appropriate frame sizes, mirroring how head circumference dictates cap size.
Height-Based Recommendations: Specialized’s guides correlate rider height with frame sizes (e.g., Small, Medium, Large), ensuring optimal comfort and performance. Just as a too-small cap feels constricting, an ill-fitting bike frame compromises control and efficiency. This emphasizes the importance of precise measurements.
Beyond Height: Similar to considering head shape for a cap, bicycle fit also accounts for inseam length and arm reach. These factors refine the initial height-based recommendation, ensuring a personalized fit. Both scenarios highlight that a ‘one-size-fits-all’ approach is inadequate.
The Importance of Charts: Specialized provides detailed size charts on their website, analogous to New Era’s cap charts. These charts are crucial for selecting the correct frame size, preventing discomfort, and maximizing riding enjoyment. Both guides demonstrate a commitment to providing customers with the tools for a perfect fit.
Where to Find More Information & Support
Navigating New Era sizing can sometimes require additional assistance. Fortunately, numerous resources are available to ensure a perfect fit. The official New Era website (newera.com) is the primary source, offering detailed size charts for all cap styles, including 59FIFTY, 39THIRTY, and 9FIFTY.
Retailer Support: Many authorized New Era retailers provide in-store sizing assistance. Knowledgeable staff can help measure your head and recommend the appropriate size. Checking product pages is also crucial, as many retailers include size charts directly on the item description.
Online Communities: Online forums and social media groups dedicated to New Era caps are valuable resources. Experienced collectors often share sizing tips and advice. Websites like mvert.ru can also aid in shopping and understanding sizing nuances.
Customer Service: New Era’s customer service team is available to answer specific questions and address concerns. Don’t hesitate to contact them for personalized guidance. Remember to review return and exchange policies regarding sizing issues before making a purchase.