Engine & fuel
Boat Fuel, Range & Cost Calculator
Calculate boat fuel range, running time and trip cost using US gallons or liters and your measured consumption per hour.
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Boat Tank Volume Calculator
Calculate boat tank capacity from internal dimensions in inches, feet or centimeters. See results in US gallons and liters.
How much does your tank hold?
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Your inputs
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Your result
Result updates automatically
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This geometric volume assumes internal dimensions and a regular shape. It does not subtract baffles, fittings or expansion space; it is not a filling instruction.
Useful answers
What about an irregular tank?
This calculation does not model sloping bottoms or cut-outs. Use the tank label or manufacturer documentation.
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Engine & fuel
2 Stroke Oil Mix Calculator
Calculate how much oil to add to your fuel for a 2 stroke mix at 50:1, 40:1, 25:1 or your engine’s specified ratio.
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