Spike's Calculators

Semi-Ellipsoid Dome Tank

Semi Ellipsoid Dome Tank Semi Ellipsoid Dome Tank

Calculate the surface area, volume, and capacity of a semi-ellipsoid dome tank.
A semi ellipsoid dome has an elliptical base with an elliptical top. 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

Semi Elliptical Dome Tank

Diameter A in
Diameter B in
Tank Height in
Liquid Weight-Pounds per US Gallon lb/gal US


Tank Volume
In Cubic Inches in³
In Cubic Feet ft³
Cubic Metres
Tank Capacity
In US Gallons gal US
In Imperial Gallons gal Imperial
In Litres L
Liquid Weight and Surface Area
Weight of Liquid lbs
Surface Area in Square Inches in²
In Square Feet ft²
In Square Millimetres mm²
In Square Metres


  1. enter the tank's diameter A
  2. diameter B
  3. the height of the tank
  4. the weight of the liquid in pounds per US gallon


  1. the volume of the tank in cubic inches
  2. volume in cubic feet
  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 inches
  9. the surface area in square feet
  10. the surface area in square millimetres
  11. the surface area in square metres
V = 2/3𝝅abh
where V is the volume
𝝅 = 3.14159265
a length A
b length B
h the height
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)

Semi - Ellipsoid Dome Tank/Container (Semi Ellipse)

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