Fleece Yield Calculator

Clean fiber weight from raw fleece weight and waste.

Raw fleece weight (lb)

Grease/lanolin (%)

Vegetable matter (%)

Dirt/suint (%)

Second cuts/waste (%)

Tab to move between fields

Spinnable fiber (oz)

47.12

Spinnable fiber (lb)2.95

Spinnable fiber (g)1,336

Overall yield (%)58.9%

Wash yield (%)62%

Total waste (oz)32.88

Grease removed (oz)20

How to Use This Calculator

Weigh the raw (grease) fleece and enter the weight in pounds.
Estimate the grease/lanolin percentage based on breed — merino 30–45%, Romney 10–20%, alpaca 2–5%.
Enter the vegetable matter percentage (hay, seeds, burrs visible in the fleece).
Enter dirt/suint percentage and second cuts/waste percentage based on your visual inspection.
Read the spinnable fiber weight in ounces, pounds, and grams after all losses are deducted.
Use the overall yield percentage to decide whether the fleece price is worth the processing effort.

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