A straightforward approach for converting men’s pants sizes to women’s is to remove 21 inches from the men’s waist measurement. This means that a men’s size 34 corresponds to a women’s size 13.
Even after converting the waist measurement, the inseam measurement should not be altered, as men’s sizes are based on the waist measurement. Women’s clothing sizes range from 0 to 24 or larger, with little correlation to real body dimensions. Consequently, when converting women’s pants sizes to men’s, one needs add 21 inches to the women’s waist measurement to obtain the men’s pants size.