Convert your body measurements into Korean, US, EU and Japanese pants sizes.
A pants size calculator is a tool that automatically converts your waist, hip, and inseam measurements into Korean, US, European, and Japanese sizes. It's useful when shopping online for international sizes or buying clothes locally while traveling. The calculator applies different size standards based on gender to provide accurate recommendations.
Korean sizes are typically numbered 26-38, based on waist circumference in centimeters. US sizes use inches for waist measurements, generally ranging from 28-42. European sizes range from 38-58, using numbers approximately 12-14 higher than Korean sizes. Japanese sizes primarily use letter designations like XS, S, M, L, XL, classified based on waist measurements.
Measure waist circumference at the narrowest point about 2cm above the navel. Hip circumference should be measured at the widest part of the hips, and inseam length from crotch to ankle. When measuring, don't pull the tape too tight - let it rest naturally against your body. Measurements are most accurate when wearing only underwear and standing upright.
Men's pants have less difference between waist and hip, so waist measurement is the primary sizing factor. Women's pants prioritize the waist-to-hip ratio, and fit varies significantly based on hip measurements even with the same waist size. Women's pants typically provide the best fit when the waist-to-hip ratio is 0.7 or below. This calculator distinguishes between genders to provide more accurate size recommendations.
When buying pants online, always check the detailed size chart on the product page as sizing standards vary by brand. For skinny or slim-fit pants, choose one size larger than usual, while loose-fit or wide pants work well at your regular size. Stretchy fabrics are comfortable even when slightly tight, but cotton or denim materials should be chosen with more room.
Even with the same waist size, pants fit varies greatly depending on hip and thigh circumference. For athletic builds with developed lower body, it's more comfortable to choose pants one size larger than waist measurement and have the waist tailored. If you're shorter or taller than average, inseam length is crucial, so check for 'short' or 'long' options beyond standard sizing. If weight changes are expected, choosing stretchy materials or adjustable waistbands is a smart choice.