I have yet to find a definitive answer that doesn't require third-party tools. Most of the search results were unrelated enough that they weren't useful, or dodgy-looking sites pushing even dodgier third-party tools.
I found this link https://msdn.microsoft.com/en-us/library/windows/desktop/aa365230%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396
and the Analyze button doesn't generate a report.
Is there a built-in command line or other tool that reports the MFT size in Windows 7?