Composite Calculators

Free, accurate online tools for composite materials engineers — fiber volume fraction, density by rule of mixtures, porosity, laminate design, and more. Updated weekly with new calculators.

Fiber Volume Fraction Calculator

Convert fiber weight fraction (Wf) to volume fraction (Vf) using fiber and matrix densities. Essential for prepreg design, quality control, and performance prediction in composites.

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New tools added every week: porosity/void content, laminate thickness estimator, CTE mismatch calculator, shear modulus prediction, and more.