Aggressive Skates That August How Do I Know What Size I Am In Aggressive Skates?

How do I know what size I am in aggressive skates? - aggressive skates that august

I am a 8.5 in women's shoes and my hockey skates, the missions that are one size 9th I am looking for a pair of roller skates aggressive. I hereby order my inline skates and I, not to the wrong size. Some sites say that for a size and others say the opposite. Help me please!