Spike's Calculators

Calculate a bowl tank's volume, capacity, and surface area.

The bowl tank here is semi-sphere, where the height is equal to half the diameter. This calculator uses feet 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 diameter of the bowl tank in feet
- the weight of the liquid in pounds per US gallon

- the volume of the bowl tank in cubic feet
- the volume of the in cubic inches
- 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 =2/3𝝅(D/2)³ where V is the volume of the tank 𝝅 = 3.14159265 D the tanks' diameter

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)