Human foot shape affects the fit of shoe significantly. Some shoes fit better to some types of feet, while other shoes fit better to other types of feet. The paper analyzes human feet from the perspective of shoe fit. We analyzed and compared the width and length of feet as well as the shape of toe area (by classifying feet into Greek, Roman and Egyptian type). We focused to differences between adult and children feet. In the analysis we included a huge number (more than 40.000) of 3D scans of human feet. The 3D scans were obtained in EU project Dorothy, internal foot scanning campaigns and mostly from feet scanners installed round the world. Currently about 170 scanners are installed in retail shops and are available for feet scanning and for recommendation of shoes to end customers.