Calculate the volume of a dome-shaped tank/container that has the shape of a hemisphere (half sphere).

Half of the length's base equals the height in this type of tank. This calculator uses feet 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

1. enter the tank's base length in feet
2. the weight of the liquid in pounds per US gallon

Results

1. the volume of the tank in cubic feet
2. volume in cubic inches
3. volume in cubic metres
4. tank capacity in US gallons
5. capacity in Imperial gallons
6. capacity in litres
7. weight of the liquid when the tank is full
8. the surface area of the tank in square feet
9. the surface area in square inches
10. the surface area in square millimetres
11. the surface area in square metres

Formula

V = 2/3Πr³
where V is the volume
Π = 3.14159265
r half the length of the tank base

Conversions

one cubic foot (ft³) = 1728 cubic inches (in³)
one cubic foot (ft³) = 28316846.592 cubic millimetres (mm³)
one cubic foot (ft³) = 0.028316846592 cubic metres (m³)
one cubic foot (ft³) = 7.48051948051947 gallons (gal) US
one cubic foot (ft³) = 6.22883545904283 gallons (gal) Imperial
one square foot (ft²) = 144 square inches (in²)
one square foot (ft²) = 92903.04 square millimetres (mm²)
one square foot (ft²) = 0.09290304 square metres (m²)