Blanket yarn calculator
Estimate blanket yarn in grams, meters, yards and whole skeins from a measured swatch.
01 / START WITH YOUR SWATCH
How much yarn will I need?
A blanket estimate grounded in
your yarn, your stitch, your tension.
NO MYSTERY NUMBERS
A small sample.
A clearer picture.
A swatch is a small sample made using the yarn, hook and stitch you’ll use for the blanket. Measure and weigh it after preparing it the same way you intend to prepare your finished project.
Read the Craft Yarn Council’s gauge guidance ↗Scale the area
Divide blanket area by swatch area. A 100 × 120 cm blanket is 120 times the area of a 10 × 10 cm swatch.
Estimate the yarn
Multiply that ratio by swatch weight. A 5 g swatch gives a 600 g base estimate. Your yarn label converts this to meters.
Give yourself room
Add your chosen allowance and round up to whole skeins. With 10% extra and 100 g skeins, that example needs 7 skeins.
Read the method
Plan crochet blanket stripes and yarn for each color
Try a cream, moss and clay stripe layout, then turn your row sequence into a separate yarn budget for each color.
02 / READ THE GUIDEEstimate blanket yarn from a weighed swatch
Use swatch area and weight to estimate blanket yarn, add an explicit allowance, and round to whole skeins.
03 / READ THE GUIDEWhy a different swatch changes your yarn estimate
See how measured fabric area and swatch weight affect blanket yarn estimates, with a comparison and practical checks.