Generally most people wear 1/2 to 1 whole size larger than their U.S. street shoe size. We have measured the outside of the shoes from heel to toe. All measurements are in inches and approximate.

Child Size 10 - 7 1/4
Child Size 11 - 7 5/8
Child Size 12 - 8
Child Size 13 - 8 3/8
Youth Size 1 - 8 5/8
Youth Size 2 - 8 7/8
Youth Size 2.5 - 9 1/8
Youth Size 3 - 9 1/4
Youth Size 3.5 - 9 1/2
Youth Size 4 - 9 1/2
Women's Size 5 - 9 1/2
Women's Size 5.5 - 9 1/2
Women's Size 6 - 9 3/4
Women's Size 6.5 - 10
Women's Size 7.5 - 10 1/4
Women's Size 8 - 10 1/2
Women's Size 8.5 - 10 3/4
Women's Size 9 - 10 3/4
Women's Size 9.5 - 10 7/8
Women's Size 10 - 11
Women's Size 11 - 11 1/2

Hope this helps. Let us know if you have any other questions.

Thanks,
Chad
Performance Footwear