Calculators
Sailboat calculator
Search … measured hulls and the dimensions arrive filled in — or type every figure yourself and change anything you like. Each figure shows how it's worked out.
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The hull
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m
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m
kg
kg
m²
The rig triangles
The four standard rig measurements. I and J set the foretriangle, P and E the mainsail. These aren't part of a boat's measured dimensions, so they're always yours to enter.
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m
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m
Everything it gives you
Computed in imperial internally, because that is the unit system these ratios were defined in and the only way they compare with published figures. Enter metric; the conversion happens here.