Sewing & Quilting Math: Cutting Sizes, Seam Allowances, Fabric Yardage, Binding & Size Grading
Plan quilts and garments from finished size to fabric to buy: cutting sizes, yardage, binding and size grading, with every cell checked as you go.
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About this course
In this course you do sewing and quilting maths in a spreadsheet, using fictional quilts, customers and a fictional size chart. You turn blocks, sashing and borders into a finished quilt size and work backwards from a target width. You add seam allowances and triangle add-ons by lookup, count pieces per strip with INT, strips with ROUNDUP and yards in 1/8 steps with CEILING. You plan binding from the perimeter and compare two backing layouts. For garments you pick sizes with an approximate XLOOKUP, add ease, grade between sizes by interpolation and draft circle skirts with PI, then match a shopping list against your fabric stash with SUMIFS.
Lessons
- Quilt Layout: Blocks, Sashing and Borders to a Finished Size Pro
- Cutting Sizes: Seam Allowances and Triangle Add-Ons by Lookup Pro
- Fabric Yardage: Pieces per Strip, Strips and Yards in 1/8 Steps Pro
- Binding and Backing: Perimeter, Strips, Panels and Seam Direction Pro
- Garment Sizing: Size Chart Lookups, the Larger Size and Ease Pro
- Grading Between Sizes: Interpolating Pattern Measurements Pro
- Circle Skirts: Waist Radius, Outer Radius and Hem Length with PI Pro
- Capstone: Fabric Stash, Shopping List and Project Budget Pro