I think this is great, Claus! I'll have you know that I'm generally somewhere between a US 9E and a US 9.5D (closer to the 9.5). The results align nicely with my personal experiences. High five! - Keith I got the exact same results as you based on my 1 AE input (9D, too large) and my measurements so it isn't working for me. In dress shoes I expect 7.5-8.5 to be about right (I do wear 9-9.5 in sneakers though). I'm not going to draw any conclusions until more data is in the system though.