Work out what you need
Crafts
Calculate quantities, understand the method and turn the result into a practical buying plan.
Calculators
Yarn Calculator
Estimate project yarn from a measured swatch or known area usage, and convert metres and yards.
Use calculator →02Fabric Calculator
Plan repeated fabric pieces with seam allowance, usable width, grain direction and pattern repeat.
Use calculator →03Knitting Gauge Calculator
Convert measured stitch and row gauge into project counts, rounded to pattern multiples.
Use calculator →04Candle Wax Calculator
Plan vessel fill, wax, fragrance and whole bags for a candle batch.
Use calculator →05Resin Casting Calculator
Calculate mould fill and split the batch using the product’s stated volume or weight mixing ratio.
Use calculator →06Bracelet Bead Calculator
Estimate bead count from finished length, clasp length, bead size and pattern repeat.
Use calculator →07Soap Base Calculator
Estimate melt-and-pour soap base from mould capacity or measured weight per bar.
Use calculator →08Quilt Backing & Batting Calculator
Plan backing joins and batting dimensions with explicit overhang and usable fabric width.
Use calculator →Practical guides
Guide
How Much Yarn Do I Need?
Estimate yarn from a weighed swatch or a known usage rate, add an allowance and convert to whole balls, with a worked blanket example.
Read guide →Guide
Yarn Weight Guide
The Craft Yarn Council weight categories with their typical knitting gauge and needle sizes, and why a swatch still decides a substitution.
Read guide →