Calculator Directory

Boating Sports Calculators

You can use these calculators to calculate average boat speed, chain locker volume, capsize factor, and more..

PHRF Calculator
How Fast Is Your Boat? Calculates Approximate Average Boat Speed and Seconds per Mile Speed Differences

Anchor Chain Storage Calculator
What is the chain locker volume required for self-stowing chain?

Bobstay Calculator
This calculator determines the tensile strength needed by the bobstay for sailboats that have bowsprits.

Capsize Calculator
Calculate the capsize factor for a sailboat.

Displacement Hull Speed Calculator
What is the maximum speed a displacement vessel attain under ordinary conditions?