What are the units for planks constant?

Planck's Constant units are energy-seconds.

Planck's Constant is the product of two fundamental Quantum constants, W and C. W is the magnetic charge of "free space" and C is the electric charge of "free space". The value of W= 500 atto Webers and C= 4/3 atto Coulombs. The "free space" impedance z is the ratio of the two quantum constants z=W/C = 375 Ohms.