# Horizontal Cylindrical Tank with Hemispherical Heads (Capsule Tank)

Calculate the volume, capacity, and surface area of a horizontal cylindrical tank with hemispherical heads. The shape of the tank looks like a capsule.

This calculator uses inches for measurements.

##### Approximate weight of Fuel or Water

one US gallon of water = 8.34 pounds.
one US gallon of diesel fuel = 7.1 pounds
one US gallon of gas = 6 pounds

Note: measurement used in the calculation is the diameter, not the radius ! The length measurement is the overall tank length, cylinder plus the two caps.

#### Calculator

- the diameter of the horizontal cylinder tank in inches
- tank length inches
- the weight of the liquid in pounds per US gallon

#### Results

- the volume of the horizontal cylinder tank in cubic inches
- the volume in cubic feet
- the volume in cubic metres
- the tank capacity in US gallons
- the capacity in Imperial gallons
- the capacity in litres
- full tank liquid weight based on lbs/gal US
- the surface area of the tank in square inches
- the surface area in square feet
- the surface area in square millimetres
- the surface area in square metres

##### Formula

V=𝝅(D/2)²L
where V is the volume
𝝅 = 3.14159265
D the diameter
L the length of the cylinder part of the tank

##### Conversions

one cubic inch (in³) = 0.00432900432900432 gallons (gal) US
one cubic inch (in³) = 0.00360465014990905 gallons (gal) Imperial
one cubic inch (in³) = 0.016387064 litres (L)

### Horizontal Cylindrical Tank with Hemispherical Heads (Capsule)

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