Tabellab
Crafts & Handmade Beginner

Knitting & Crochet Math: Gauge, Cast-On Counts, Even Increases, Yarn Amounts & Resizing

Use your swatch to get stitch counts, even shaping, yarn amounts and resized patterns right, with every cell checked as you go.

8 lessons 8 labs 2.1 h Certificate

One-time payment · lifetime access · lessons, labs, exam and certificate included · no subscription.

About this course

In this course you do knitting and crochet maths in a spreadsheet, using fictional patterns and yarns. You turn a measured swatch into stitches and rows per 10 cm and per inch, and compare it with the pattern gauge. You calculate cast-on counts from a finished width, round them to the pattern repeat with MROUND and add edge stitches. You spread increases and decreases evenly with INT and MOD, estimate yarn from a weighed swatch and buy whole balls with ROUNDUP, and rescale a whole pattern for a new yarn. You plan a top-down raglan yoke, count the stitches of crochet circles and granny-square blankets, and finish with a costed project log and an hours chart.

Lessons

  1. Gauge from a Swatch: Stitches and Rows per 10 cm and per InchLab14 min Pro
  2. Cast-On Counts: Width × Gauge, Pattern Repeats and Edge StitchesLab15 min Pro
  3. Even Increases and Decreases: Segments with INT and MODLab15 min Pro
  4. Yarn Amounts: Metres per Gram, Swatch Weight and Balls to BuyLab15 min Pro
  5. Resizing for a New Yarn: Scaling Every Count to Your GaugeLab16 min Pro
  6. Top-Down Raglan: Rounds to Depth and a Stitch-Count TableLab16 min Pro
  7. Crochet: Rounds that Grow, Total Stitches and a Granny-Square BlanketLab15 min Pro
  8. Capstone: Project Log with Yarn Costs, Totals by Craft and an Hours ChartLab17 min Pro