1 Pa = 1 Newton/m^2.
1 Newton = 1 kg m/second^2.
Check out:
http://www.ngs.noaa.gov/PUBS_LIB/FedRegister/FRdoc59-5442.pdf
A square foot of ground covers slightly more area than a board foot of wood.
Sorry.
F/A sorry. It's friday.
If it was good enough for the Wright Brothers and Werner Von Braum, its good enough for me. To hell with metric.