Spike's Calculators

Cylinder with a Sloped Bottom Tank - Feet

Cylinder with a Sloped Bottom Tank

Calculate the volume and surface area of a sloped bottom cylinder 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

Cylinder with a Sloped Bottom Tank

Tank Diameter ft in
Long Height ft in
Short Height ft in
Liquid Weight-Pounds per US Gallon lb/gal US


Tank Volume
In Cubic Feet ft³
In Cubic Inches in³
In 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 Feet ft²
In Square Inches in²
In Square Millimetres mm²
In Square Metres


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


  1. the volume of the sloped bottom tank in cubic feet
  2. the volume in cubic inches
  3. the volume in cubic metres
  4. the tank capacity in US gallons
  5. the capacity in Imperial gallons
  6. the capacity in litres
  7. full tank liquid weight based on lbs/gal US
  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 = 𝝅r²(sl)/2
where V is the volume of the tank
𝝅 = 3.14159265
r  =  half the diameter
s the short length
l the long length of the tank
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)

Vertical Cylinder Tank with Sloped Bottom

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