The fundamental dimensions are M (mass), L (length), T (time), I (electric current).
Quantity
charge
force
energy
pressure
density
e2
Dimensions
IT
MLT-2
ML2T-2
ML-1T-2
ML-3
none
Reason
Q = It
F = ma
W = Fd
P = F/A
r
-
S.I. unit
coulomb (C)
newton (N)
joule (J)
pascal (Pa)
kg/m3
-

If you have trouble with units and dimensions you are STRONGLY urged to use the tutorial Dimensional Analysis.

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