Enter horizontal cylindrical tank dimensions:

Enter vertical cylindrical tank dimensions:

Enter rectangular tank dimensions:

Measurement Tank Capacity Tank Contents
Litres 0L 0L
m3 0m3 0m3
Gallons (UK) 0 gal 0 gal
Gallons (US) 0 gal 0 gal
Barrels 0 barrels 0 barrels
ft3 0ft3 0ft3
Calculation Results (Approximate)

Tank Size Calculator

Our tank size calculation tool is free and easy to use. Simply note down the length and diameter of your current fuel tank in millimeters or inches. If you know the liquid height you can also work out how much is needed to top it up to full. Make sure you’re calculating the correct volume for your tank by selecting one of the below options.

  • Horizontal Cylindrical Tanks
  • Vertical Cylindrical Tanks
  • Rectangle Tanks

Then hit calculate!

The conversion bar allows you to quickly convert the litres into barrels, gallons, ft3 and m3.

If you require any further help regarding our tank size calculator tool, please don’t hesitate to contact one of our specialists.


If you would like to speak with one of our account specialist then please call: 0845 872 3344

Need A Fuel Top-Up?

If you’re based within the UK and require a top up of fuel for your oil tank simply visit Crown Oil Fuels and Lubricants for a quick quote!


Need a top up of gas oil for your tank? Visit Crown OilTop up on kerosene at Crown Oil