See size conversion chart at www.gothicplus.com/size-charts-conversio... But shoe size also depends a lot on your foot - if you have a wide toe box, you might need to go up a size, especially if the shoes you want have a pointed toe.
Please look here,you will be very clear what size you need..
I'd say about a 7 in US mens would be fine (or 8 in womens) But, I may not be sure... Here's a really helpful link I found: