Tank Volume Calculator

This tank volume calculator works out how much a tank holds, and how much is in it right now at a given liquid depth. Pick the shape, enter the inside dimensions and the depth, and it returns the contents in US gallons, imperial gallons, litres and cubic feet, along with the full capacity and the percent full. Horizontal capsule, vertical capsule, horizontal oval, rectangular and cone bottom tanks each use their own exact partial fill formula rather than a rule of thumb. The dimensions are inside measurements, so wall thickness, baffles, sumps and fittings are not counted.

Calculator Type
Measured In
The cylindrical middle only, not counting the two rounded ends.
Measured straight down from the top of the liquid to the bottom of the tank.
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Measured In
The cylindrical middle only, not counting the two rounded ends.
From the very bottom of the lower cap up to the surface.
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Measured In
The horizontal axis of the oval cross section.
The vertical axis of the oval cross section.
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Measured In
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Measured In
From the tip of the hopper up to where it meets the straight wall.
Measured from the very tip of the cone.
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