Spike's Calculators

Calculate the volume of a dome-shaped tank that is a hemisphere (half sphere).

Half of the length's base equals the height in this type of tank. 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

- enter the tank's base length
- the weight of the liquid in pounds per US gallon

- the volume of the tank in cubic inches
- volume in cubic feet
- volume in cubic metres
- tank capacity in US gallons
- capacity in Imperial gallons
- capacity in litres
- weight of the liquid when the tank is full
- 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 = 2/3Πr³ where V is the volume Π = 3.14159265 r half the length of the tank base

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)