US to Korea Plus Size Converter 🇰🇷
Master K-fashion sizing! The complete US to Korea plus size conversion chart, interactive calculator, and fit guide for Korean retailers.
Korean fashion — K-fashion — has taken the world by storm with its impeccable tailoring, trend-forward designs, and quality craftsmanship. But Korean sizing operates on a unique system that's neither Western nor Japanese. Korean sizes use a "44-55-66-77" scale based on the Korean standard KS K 0051, where Korean 66 roughly equals a US 10-12 and Korean 77 starts the plus size range at approximately US 14-16. This comprehensive guide decodes the entire Korean sizing system with a definitive conversion chart, interactive calculator, and essential fit insights for plus size K-fashion shoppers.
Select your US size to see the Korean equivalent using the standard 44-55-66-77 system. Also displays UK, EU, and AU sizes for complete international clarity.
US to Korea Plus Size Conversion Chart
Below is the complete US to Korea plus size conversion chart covering US sizes 10 through 28. The Korean 44-55-66-77 system is the national standard (KS K 0051). For plus size shoppers, Korean 77 is where the extended size range begins. The highlighted row marks the pivotal US 18 / Korean 88 crossover — the entry point for Korean plus size specialty brands.
| 🇺🇸 US Size | 🇰🇷 Korea Size | KR Letter | Bust (cm) | Waist (cm) | Hip (cm) | UK/AU |
|---|---|---|---|---|---|---|
| 10 | 66 | M-L | 91-94 | 71-74 | 96-99 | 14 |
| 12 | 77 | L-XL | 95-99 | 75-79 | 100-104 | 16 |
| 14 | 77-88 | XL | 100-104 | 80-84 | 105-109 | 18 |
| 16 | 88 | XL-2XL | 105-109 | 85-89 | 110-114 | 20 |
| 18 | 88-99 | 2XL | 110-115 | 90-95 | 115-120 | 22 |
| 20 | 99 | 2XL-3XL | 116-121 | 96-101 | 121-126 | 24 |
| 22 | 99-110 | 3XL | 122-127 | 102-107 | 127-132 | 26 |
| 24 | 110 | 3XL-4XL | 128-133 | 108-113 | 133-138 | 28 |
| 26 | 110-120 | 4XL | 134-139 | 114-119 | 139-144 | 30 |
| 28 | 120 | 4XL-5XL | 140-145 | 120-125 | 145-150 | 32 |
Korean sizing is not fully standardized even within the KS K 0051 system. A Korean "88" at one brand may fit differently than an "88" at another. Always use the centimeter measurements on the brand's specific size chart. Korean plus size brands (77+) tend to be more consistent than mainstream Korean fashion brands.
The Korean clothing size system is governed by KS K 0051, the Korean Industrial Standard for apparel sizing. Unlike the arbitrary numbering of US sizes or the letter-based system of Japan, Korean sizes use a two-digit numerical scale where each increment represents a specific body measurement range in centimeters.
- 1 Korean 44: The smallest standard adult size. Roughly equivalent to US 2-4. Bust approximately 82-85cm.
- 2 Korean 55: The "medium" baseline. Roughly US 4-6. Bust approximately 86-89cm. This is the most common size in mainstream Korean fashion.
- 3 Korean 66: The "large" standard. Roughly US 8-10. Bust approximately 90-94cm. Most mainstream Korean brands stop here.
- 4 Korean 77: The plus size entry point. Roughly US 12-14. Bust approximately 95-104cm. Dedicated Korean plus size brands start here and extend to 120+.
"Korean sizing looks intimidating with its 44-55-66 numbers, but it's actually one of the most logical systems — each number directly corresponds to a centimeter measurement range. Once you know your Korean number, K-fashion opens up."
Korean clothing is cut for the Korean body type — which means narrower shoulders, a straighter silhouette through the hip, and shorter sleeve and leg lengths compared to Western brands. Even at the correct KS K 0051 size, a Korean garment will fit differently than its US equivalent. Here's what to expect from different types of Korean retailers.
Pro tip: Korean plus size specialists (77-120+) are the only reliable option for US shoppers above a US 14. Mainstream Korean fashion stops at 66-77, which maxes out around US 12-14. The Korean plus size market has grown significantly since 2020, with more brands launching extended size ranges each year. For detailed recommendations, explore our plus size brand reviews.
Korean size charts use centimeters exclusively. Every measurement must be converted from inches to centimeters before comparing. Multiply inches by 2.54 to get your centimeter equivalent. Korean brands also place heavy emphasis on shoulder width and arm length — measurements that US shoppers often overlook.
- ✓ Bust (cm): The primary measurement for Korean sizing. Measure around the fullest part in cm. Korean garments are cut with a closer fit through the bust — add 5-8cm of ease for comfort.
- ✓ Shoulder Width (cm): Critical for Korean clothing. Measure from shoulder seam to shoulder seam across your back. Korean garments have narrower shoulders — this is the #1 fit issue for Western shoppers.
- ✓ Waist (cm): Korean brands cut with less waist definition than Western brands. High-waisted styles are prevalent — measure at your natural waist and at the point where pants typically sit.
- ✓ Sleeve & Leg Length (cm): Korean garments have shorter sleeves and inseams. If you're above 5'5" or have longer arms, always check these measurements — they're often the dealbreaker.
Create a "K-Fashion Shopping Card" with all your measurements in centimeters: bust, waist, hip, shoulder width, arm length, and preferred inseam. Korean size charts frequently list shoulder width and sleeve length — measurements that US and UK charts rarely include. Having these ready prevents the most common K-fashion ordering mistake.
Korea's plus size fashion market has experienced significant growth since 2020, driven by changing domestic attitudes toward body diversity and increased international demand for K-fashion in extended sizes. While still smaller than the US or UK plus size markets, Korean plus size fashion now offers styles through 120+ (approximately US 28) at dedicated brands.
Key developments include Korean online-only plus size boutiques that have built loyal international followings through social media, mainstream Korean brands launching plus size sub-lines (typically labeled "MADE" or "Plus" collections), and Korean streetwear brands whose oversized aesthetics naturally accommodate a wider size range. The trend is upward — each season brings more Korean brands expanding their size ranges. For a regularly updated list of size-inclusive Korean retailers, visit our plus size brand reviews.
Korean plus size fashion currently has a lower ceiling than Western markets. Above US 24 (Korean 110+), options are limited even at dedicated plus size brands. The market is expanding, but it has not yet reached the size inclusivity of US or UK markets. Always verify the maximum Korean size available before investing time in browsing a brand's collection.
Korean online shopping is increasingly accessible to international customers, but there are specific traps that can derail your K-fashion experience. Here are the most common mistakes and how to avoid them.
- ⚠ Confusing Korean "free size" with US "one size". Korean free size typically fits Korean 55-66 frames — roughly US 4-10. It will not fit a US plus size body in standard cuts. Only oversized/relaxed free size pieces work above US 12.
- ⚠ Assuming Korean 66 equals US 6 or UK 6. The number 66 has nothing to do with Western sizing. Korean 66 is approximately US 8-10. The numbers represent centimeter ranges, not an international conversion.
- ⚠ Ignoring shoulder and arm measurements. This is the #1 reason K-fashion returns happen. Korean garments are cut with narrower shoulders and shorter sleeves. Always check these measurements against your body.
- ⚠ Not verifying international shipping. Many Korean plus size brands that sell through Korean domestic platforms (like Naver Shopping or Zigzag) don't ship internationally. You may need a Korean package forwarding service, which adds cost and complexity.
Returning items to Korean retailers requires planning. Korean consumer protection laws are strong domestically, but international returns are governed by each retailer's individual policy — and policies vary widely.
Korean brands with international shipping: Brands that actively target international customers generally offer reasonable return windows (14-30 days) with refunds to the original payment method. Return shipping from the US to Korea typically costs $25-$40 and takes 2-4 weeks. Some Korean plus size specialists provide prepaid return labels for international orders — look for this before purchasing.
Korean domestic platforms: If you used a forwarding service to purchase from a Korean-only platform, returns become significantly more complex. You'll need to ship back to your forwarder's Korean warehouse, who then handles the domestic return. This doubles the return shipping cost and timeline. Before ordering through a forwarder, confirm the platform's domestic return policy and window. For detailed guidance, visit our international returns guide.
Scenario 1: The Korean Plus Size Blazer. You're a US 18 and want a structured blazer from a Korean plus size specialist. According to the chart, you're a Korean 88-99. The brand's size chart shows Korean 99: bust 115cm, shoulder 43cm, sleeve 58cm. Your bust is 112cm (good), but your shoulder width is 46cm and your preferred sleeve length is 62cm. The shoulder is too narrow and the sleeves too short — this blazer won't fit regardless of the bust measurement. Look for raglan sleeves or dropped shoulder styles to bypass the shoulder width issue.
Scenario 2: The Korean Oversized Streetwear Piece. You're a US 22 and find an oversized hoodie from a Korean streetwear brand. It's listed as "Free Size — Oversized Fit" with garment measurements: bust 140cm, length 72cm, sleeve 60cm. The bust is very generous and will fit. The length is cropped by Western standards — it will hit at the natural waist on someone 5'5" or taller. The sleeves will be bracelet-length. This piece works as an intentionally cropped, oversized look, but you need to know what you're getting — this is not a standard-fit hoodie.
Korean 77 is approximately a US 12-14. It represents the entry point for Korean plus size fashion. In the KS K 0051 system, 77 corresponds to a bust measurement of approximately 95-104cm. Korean 77 is generally the largest size available at mainstream Korean fashion brands — for sizes beyond this, you'll need to shop at Korean plus size specialists that carry 88, 99, 110, and 120.
The Korean sizing system (KS K 0051) is based on body measurements in centimeters. Each number corresponds to a specific range: 44 represents approximately 82-85cm bust, 55 is 86-89cm, 66 is 90-94cm, and 77 is 95-104cm. The numbers are derived from the measurement ranges themselves — they're not arbitrary like US sizes. This makes Korean sizing more logical once you understand the system: the number tells you the centimeter range it fits.
Yes, but your options are limited to Korean plus size specialist brands that carry 99, 110, and 120 sizes (approximately US 20-28). Mainstream Korean fashion does not accommodate above Korean 77 (US 12-14). The Korean plus size market has grown significantly since 2020, and brands carrying through 110-120 are increasing. However, selection above US 24 (Korean 110) remains limited compared to Western plus size markets.
No. Korean "free size" is calibrated to the Korean domestic market and typically fits frames in the Korean 55-66 range — approximately US 4-10 in standard cuts. In oversized or relaxed silhouettes, Korean free size can work up to approximately US 18-20 depending on the specific garment measurements and your body proportions. Always check the actual garment measurements in centimeters for any Korean free size item. If the bust measurement shows at least 15-20cm more than your body measurement, the oversized fit should work.
It depends on the brand. Korean plus size specialists that target international customers often ship directly to the US and other countries. However, many Korean plus size brands sell primarily through Korean domestic platforms like Naver Shopping, Zigzag, or W Concept Korea, which may not offer international shipping. For those platforms, you'll need a Korean forwarding service. Popular options include Korean Buddy, Oh My Zip, and Paysable. Forwarding typically adds $15-$30 in service fees plus international shipping costs.
Korean plus size clothing is generally well-constructed with attention to detail, quality stitching, and good fabric selection. Korean consumers have high standards for garment quality, and this extends to plus size lines. Korean brands excel at tailoring, unique design details, and fabric textures. The trade-offs are: Korean plus size fashion is more expensive than Western fast fashion, the size range is more limited, and the cuts assume a Korean body type (narrower shoulders, shorter limbs). If the measurements work for your body, Korean garments offer excellent quality-to-price ratio.
Korean plus size fashion offers something genuinely unique in the global market: impeccable tailoring, trend-forward design, and quality craftsmanship combined with the distinctive aesthetic that has made K-fashion a worldwide phenomenon. The 44-55-66-77 sizing system may seem foreign at first, but it's built on a logical foundation of centimeter measurements that, once understood, makes shopping more precise than Western sizing ever could be.
Armed with your Korean size number, centimeter measurements (especially shoulder width!), and an understanding of which Korean retailers genuinely cater to plus size bodies, you're ready to explore one of the most exciting emerging markets in plus size fashion. Remember: Korean 77 is just the beginning. For more international shopping guides, brand deep-dives, and plus size style inspiration, explore our complete collection of size guides, brand reviews, and international shopping tips.
About the PlusSizePlus Editorial Team
This article was researched, written, and reviewed by the PlusSizePlus Editorial Team. Our team creates educational resources covering plus size fashion, international size conversion, shopping guides, brand comparisons, and body-positive style advice. Every article is written to be clear, practical, and as accurate as possible based on publicly available sizing standards and retailer information. We review our articles periodically to keep them up to date as sizing conventions and brand policies evolve.
Disclaimer: This article is intended for educational and informational purposes only. Size conversions presented are based on standard international sizing conventions and the Korean KS K 0051 standard, and may vary between individual brands, specific garments, and fabric types. Korean sizing is particularly variable across retailers. Always consult the specific retailer's official size chart and return policy before making a purchase. For important limitations and how this content should be used, please read our full Disclaimer.
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