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Sail Cloth Calculator

Calculate cloth requirements, weights, and costs for sailmaking

Quick Samples
Try these common configurations to get started

30ft Mainsail

135% Genoa

Racing Jib

Hull Dimensions
Enter your boat's principal dimensions
About This Tool
The Sail Cloth Calculator is a tool for sailmakers and DIY boat enthusiasts to estimate the amount of cloth, weight, and cost for building a new sail. By providing the basic dimensions of the sail and information about the cloth, it calculates the total yardage needed, accounting for common waste and layout inefficiencies. This helps in budgeting and planning your sailmaking project.

Key Concepts:

Sail Area: The total surface area of the sail, the primary driver of all calculations.
Cloth Weight: Measured in ounces per square yard, it determines the sail's durability and shape-holding ability.
Layout Efficiency: The percentage of cloth that actually ends up in the finished sail, as some is lost in cutting curves.
Waste Factor: The extra material needed to account for seams, patches, and cutting errors.
Frequently Asked Questions

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