Electrostatic pressure is an electrostatic force exerted per unit area when two opposite charged particles exert a force on each other. Given here the electrostatic pressure formula to find the pressure with the known electric field value. Square the electric field value and multiply it with the electric constant value. Then finally divide the obtained value by 2 to get the result. Here Ε₀ is the electric constant, and its constant value is 8.854×10^-12.