# Round Hopper Tank Volume and Surface Area - Metres

Calculate a cylinder tank with a funnel-shaped bottom (round hopper) volume and surface area. This tank's upper part consists of a cylinder with a truncated funnel attached to the bottom.
This calculator uses metres for measurements.

##### Approximate weight of Fuel or Water

one litre of water = 1 kilogram
one litre of diesel fuel = 0.832 kilogram
one litre of gas = 0.75 kilogram

### Round Hopper Tank - Metres

#### Calculator

- enter the top diameter (A) in metres
- the cylinder part height (A) in metres
- the truncated funnel height (B) in metres
- the bottom diameter (B) in metres
- the weight of the liquid in kilograms per litre

#### Results

- the volume of the tank in cubic metres
- the volume in cubic centimetres
- the volume in cubic inches
- the volume in cubic feet
- the capacity of the tank in litres
- the capacity in hectolitres
- the capacity in US gallons
- the capacity in Imperial gallons
- full tank liquid weight based on kilograms/L
- the surface area of the tank in square metres
- the surface area in square centimetres
- the surface area in square inches
- the surface area in square feet

##### Formula

cV = 𝝅(D/2)*H
fV = 1/3𝝅H((T/2)²(B/2)²)
where cV is the volume of the cylinder
fV the volume of the truncated funnel
fV the volume of the funnel
D = diameter T
H is the height
T and B, the upper and lower diameters of the funnel

##### Conversions

one cubic metre (m³) = 1000000 cubic centimetres (cm³)
one cubic metre (m³) = 61023.7440947323 cubic inches (in³)
one cubic metre (m³) = 35.3146667214886 cubic feet (ft³)
one cubic metre (m³) = 1000 litres (L)
one cubic metre (m³) = 10 hectolitres (hl)
one cubic metre (m³) = 264.172052358148 gallons (gal) US
one cubic metre (m³) = 219.969248299088 gallons (gal) Imperial
one square metre (m²) = 10000 square centimetres (cm²)
one square metre (m²) = 1550.0031000062 square inches (in²)
one square metre (m²) = 10.7639104167097 square feet (ft²)

### Vertical Cylinder Tank with a Truncated Funnel (Hopper)

#### Filled

#### Partial Filled