Kitchen cabinet heights

What is the standard height for a wall cabinet above a sink without window to prevent hitting ones head?

I went to one of our Design Consultants for this answer.  Here is Megan's response to your question: 

'There really is no “standard” height for a wall cabinet above a sink because it just depends on the user’s height.  We are able to dictate the exact size of our cabinets because we use Crestwood Cabinetry, a full custom factory cabinet line. www.crestwood-inc.com  The dimension from the kitchen countertop to the underside of the wall cabinet above the sink on most of what we specify ranges from 68”-78”, again depending on the user’s height."