Tank Size Calculator

Easily find the volume of any storage tank using our easy to use online tank size calculator. You can also convert any existing unit volumes using our liquid volume converter tool

Tank Volume Calculator and Liquid Volume Conversion Tool

To get started using our tank calculator tools, you will need to know the dimensions of the tank you want to calculate the volume of. Choose between horizontal cylindrical, vertical cylindrical or rectangular tanks to ensure you get the right results for your storage tank.


Measurement units the volume calculator accepts

  • Millimetres (mm)
  • Centimetres (cm)
  • Metres (m)
  • Inches (in)
  • Feet (ft).

Measurement units the volume conversion tool accepts

  • Litres
  • Cubic Metres (m3)
  • Gallons (UK)
  • Gallons (US)
  • Barrels
  • Cubic Feet (ft3).

How to use the tank volume calculator

Once you know your tank’s dimensions, you simply need to select the type of storage tank you are calculating the volume for – horizontal cylindrical tanks, vertical cylindrical tanks or rectangular tanks.

Next, you need to select the measurement unit that your tank measurements are in to ensure your results are accurate. You will need to add the diameter and width for both horizontal cylindrical tanks, vertical cylindrical tanks.

If you have rectangular tanks, you will need to include the length, width and height of the tank. Optionally with all tank types, you can also include the liquid height, which will then allow you to work out the spare capacity available in the tank.

The results of your inputs will be displayed in the following measurement units;

  • Litres
  • Cubic Metres (m3)
  • Gallons (UK)
  • Gallons (US)
  • Barrels
  • Cubic Feet (ft3)

How to use the liquid volume conversion tool

If you already have an existing measurement unit you wish to convert, our tank volume converter will allow you to do this quickly and easily. You can convert a tank’s storage capacity between numerous quantities as seen below.

Simply enter the amount of liquid (volume) you wish to convert and use the dropdown menus to select the measurement units you would like to convert from and convert to.

The results of your inputs will be displayed in one of the following measurement units;

  • Litres
  • Cubic Metres (m3)
  • Gallons (UK)
  • Gallons (US)
  • Barrels
  • Cubic Feet (ft3)

Ready to learn more about our storage tank services? Call our expert team today on 0330 123 3399 to find out how we can help you diagnose and resolve any issues you may be facing


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