Water Pressure Calculator

Enter the total depth under the surface of water and select whether the water is fresh water or saltwater. The calculate will evaluate and display the water pressure.

Water Pressure Formula

The following formula can be used to calculate the water pressure an object sees at a given depth.

P = p*g*h

  • Where P is the water pressure
  • p is the density of the fluid
  • g is the acceleration due to gravity
  • h is the depth of the object in water

For fresh water, the density is 997.0474 kg/m^3

For salt water, the density is 1023.6 kg/m^3

FAQ

What is water pressure?

Water pressure, also known as hydro static pressure, is the pressure and object sees while submerged in water due to the weight of the water around it.

Why is water pressure different for salt water and fresh water?

The pressure is different because the salt water is more dense than fresh water and so weighs more per unit volume.

What is the acceleration due to gravity?

This is a constant 9.8 m/s^2 on Earth. This value would be different on other planets.

water pressure calculator

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