Here is a free online clothing size conversion calculator tool, which will help you in the US to Spanish clothing sizes conversion women's within the fractions of seconds.
Spain Women's Clothing Size Conversion:
Spain is a European country and is a mix of mountains and the modern cities. Women of spain are more or less similar in physique to the U.S women and hence there wouldn't be much change in the apparel sizes. For example, a Spain Women's clothing size of 40 would correspond to the U.S. size of 10 (Numeric Size) or L (Letter Size). A size of 44 in the Spain corresponds to the US size of 14 (Numeric Size) and XL (U.S. Letter Size).
You could check this online Spanish clothing sizes conversion women's calculator to do a conversion from US to Spain. Select any size in the U.S. letter or numeric size format and you would get the corresponding Spain women's clothing size and vice versa with ease.