Spike's Calculators

Calculate the volume and capacity of a funnel tank.

The funnel tank here has the shape of an upside-down cone with a circular top that comes to a point. This calculator uses inches for measurements.

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: measurements used in the calculation are diameter lengths, not radius lengths!

- enter the diameter of the funnel tank in inches
- the height of the funnel tank in inches
- the weight of the liquid in pounds per US gallon

- the volume of the funnel 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

V =𝝅R²h/3 where V is the volume of the tank 𝝅 = 3.14159265 R half the tanks' diameter h the height of the tank

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)