KJ4UO asked:

If I tune my SWR for 1:1 and go back and measure each value of the
capacitors and inductor, is there a equation or computer program I can
use these measured values to obtain my complex impedance at the input
of the coax cable?

Jim Tonne, WB6BLD, wrote a program in Visual Basic that does
precisely that for all common tuner configurations. It is
called Revload and can be downloaded for free from:

http://www.tonnesoftware.com/revload.html

You may want to check out his other ham-radio related programs,
listed on his main page:

http://www.tonnesoftware.com/

As others have pointed out, this is not a particularly accurate
way of measuring impedance, but it should be adequate for "ballpark"
estimates.

Jim, K7JEB