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Water, Tank & Plumbing Calculators

Water Pressure Calculator

Water pressure from the head height of a tank, and the head needed for a target pressure.

Enter values

Results update as you type.

Result

Pressure

0.9807 bar

In kPa
98.067
In psi
14.223
In metres head
10
Assessment
Adequate for gravity systems

About the Water Pressure Calculator

Water pressure from the head height of a tank, and the head needed for a target pressure.

Also known as: head pressure calculator, pressure from height of water, bar to metres head, tank pressure.

How to use this calculator

  1. Enter calculate, fluid density.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

P = ρgh · 10 m of head ≈ 1 bar

Worked example

Using the values pre-filled in the calculator above:

  • Calculate: Pressure from head
  • Height of water above the outlet = 10 m
  • Fluid density = 1,000 kg/m³

the calculator returns:

  • Pressure: 0.9807 bar
  • In kPa: 98.067
  • In psi: 14.223
  • In metres head: 10