Cylinder Volume Calculator (Gallons)

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Vertical tanks stand upright; horizontal tanks lie on their side. Partial-fill depth interpretation differs between the two.
The outer diameter of the cylinder across the widest point.
in
The height for a vertical tank, or the length (axial dimension) for a horizontal tank.
in
Turn on to calculate how many gallons are in the tank at a given fill depth rather than full capacity.
US Gallons (full)
70.5gal

Full cylinder capacity in US liquid gallons

Imperial Gallons (full)58.71gal (UK)
Liters (full)266.88L
Cubic feet (full)9.425ft³

Full capacity: 70.50 US gallons

  • This cylinder holds 70.50 US gallons (266.9 liters) at full capacity.
  • The equivalent in Imperial (UK) gallons is 58.71 gal.
  • A standard 55-gallon drum holds 55 US gallons; your cylinder holds about 1.3 drum-equivalents.

Next stepFor water weight, multiply US gallons by 8.34 lb/gal (3.78 kg per liter). For fuel oil, use roughly 7.2 lb/gal.

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