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.
Open toolYOUR BOATING TOOLBOX
Free boating tools and calculators
Choose a calculator, convert your units or find your boat’s name.
01 / YOUR TOOLBOX
Engine & fuel
From the right mix to your day on the water.
Engine & fuel
Boat Tank Volume Calculator
Calculate boat tank capacity from internal dimensions in inches, feet or centimeters. See results in US gallons and liters.
Open toolEngine & 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.
Open tool03 / YOUR TOOLBOX
Propeller & performance
Make sense of your sea-trial numbers.
Propeller & performance
Prop Slip Calculator
Calculate propeller slip from engine RPM, gear ratio, propeller pitch and GPS speed recorded during your sea trial.
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Make it your own
A name, a character, your boat.
Make it your own
Boat Name Generator & 3D Design Studio
Find a boat name, personalise its lettering on a 3D hull and compare your favourites before asking your crew to vote.
Open toolMake it your own
Pirate Ship Name Generator
Find a pirate ship name for your story or game, design its look on a 3D sailboat and share your finalists.
Open tool