Dr. MartensWomen's 1460 Vonda Softy T Fashion Boot

I wear a 7 what size should I get? Do they run big

I wear a womens US size 6. Wha size would i wear in these?

I’m looking for a us size 7.5...are the sizes on this listing us or uk? would just like to confirm...7.5us = 5.5uk?

I wear a size 9 and half because my feet are wide. Should I get the size 10?