I am horribly confused with this conversion of following two formulas:

1. Hydrostatic pressure = Height (m) × Density (kg/m³) × Gravity (m/s²)

2. HSP = 0.052 × MW × TVD', where MW (Mud Weight or density) is the drilling-fluid density in pounds per gallon (ppg), TVD is the true vertical depth in feet and HSP is the hydrostatic pressure in psi.

Can anybody tell me how to convert formula no. 1 to formula no, 2 ?

Please help me. Thanks in advance