# Partial Volume in a Truncated Funnel Tank

Calculate the amount of liquid in a partially filled truncated funnel tank/container.
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

#### Calculator

- enter the top diameter (T) of the truncated funnel tank in inches
- the bottom diameter (B) in inches
- the height of the truncated funnel tank in inches
- the depth of the liquid inside the tank in inches
- the weight of the liquid in pounds per US gallon

#### Results

- the volume of the truncated funnel tank in cubic inches
- the volume of the tank in cubic feet
- the volume of the tank in cubic metres
- the total amount of liquid the tank can hold in US gallons
- the amount of liquid inside the tank in US gallons
- the amount of liquid inside the tank in Imperial gallons
- the amount of liquid inside the tank in litres
- the amount of liquid inside the tank in cubic feet
- the weight of the liquid inside the tank based on lbs/gal US
- the amount of liquid it will take to fill this tank in US gallons

##### Formula

V = d*𝝅/3*p²+pa+a²
where V is the volume of the tank
d the fill height of the liquid
𝝅 = 3.14159265
p diameter @ fill height
a half the tanks' bottom diameter

##### Conversions

one cubic inch (in³) = 0.000578703703703704 cubic feet (ft³)
one cubic inch (in³) = 0.000016387064 cubic metres (m³)
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)

### Funnel Tank/Container (Truncated)

#### Filled

#### Partial Filled