If you mean: What is the formula for pressure?
Then the answer to that would be: Pressure = Force/Area
The Force is applied by the body and the Area is the total area of the object.
The Pressure Formula is given by Pressure = Density x Gravity x Height
The Pressure Formula is used to calculate pressure, force, area, density, height and gravity if some of these quantities are given. Pressure is expressed in Pascal (Pa).