Not sure what you mean. I am not sure what you want to do, but have you thought about using CONVERT?
It converts a number from one measurement system to another.
If this function is not available, run the Setup program to install the Analysis ToolPak. After you install the Analysis ToolPak, you must enable it by using Add-Ins on the Tools menu.
This is the usage:
CONVERT(number,from_unit,to_unit)