Marine Tank Capacity Calculator
Calculate fuel, water, and holding tank volumes and weights for marine applications.
Inputs
ft
ft
ft
%
Results
Usable Capacity
80.8 gal
Fluid Weight
574 lbs
Usable Capacity (L)305.8 L
Fluid Weight (kg)260 kg
Total Volume12 ft³
Fuel Range (at 5 GPH)16.2 hours
How to Use This Calculator
- Enter tank length, width/diameter, and height in feet.
- Select the tank shape: rectangular, cylindrical, or oval/elliptical.
- Set the fill percentage and choose the fluid type (diesel, gasoline, fresh water, or black water).
- Review usable capacity in gallons and liters, and the weight of the fluid for stability planning.
- Use the fluid weight output when calculating vessel trim and stability changes from fuel consumption.
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