Blanket Yarn Swatch
Crochet / Practical workbench

Worked examples

Three reproducible scenarios, with the complete inputs and calculated outputs.

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Worked scenario

Base example

Swatch width is 20 cm. All other inputs remain at the base values.

InputValueUnit
Swatch width20cm
Swatch height20cm
Dry swatch mass24g
Blanket width120cm
Blanket length160cm
Additional yarn allowance12%
Skein mass100g

Calculated results

ResultValueUnit
Area-scaled yarn1,152g
Yarn including allowance1,290.24g
Whole skeins13skeins

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Worked scenario

Smaller first input

Swatch width is 16 cm. All other inputs remain at the base values.

InputValueUnit
Swatch width16cm
Swatch height20cm
Dry swatch mass24g
Blanket width120cm
Blanket length160cm
Additional yarn allowance12%
Skein mass100g

Calculated results

ResultValueUnit
Area-scaled yarn1,440g
Yarn including allowance1,612.8g
Whole skeins17skeins

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Worked scenario

Larger first input

Swatch width is 24 cm. All other inputs remain at the base values.

InputValueUnit
Swatch width24cm
Swatch height20cm
Dry swatch mass24g
Blanket width120cm
Blanket length160cm
Additional yarn allowance12%
Skein mass100g

Calculated results

ResultValueUnit
Area-scaled yarn960g
Yarn including allowance1,075.2g
Whole skeins11skeins

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Weigh a representative dry swatch and calculate each yarn color separately when color usage differs.