Plan fabric
Arrange repeated pieces, compare orientations, and round to the amount your fabric shop sells.
Open the layout plannerPractical sewing math
Sew Measure
Measure once, plan the cut, and buy the right amount of fabric.
Use transparent calculators for fabric yardage, pattern repeats, allowances, binding, fullness, and home-sewing projects.
Flagship preview
Four pieces, one checked layout
Enter 45-inch fabric and four 20 × 12-inch pieces. Two pieces fit per row, creating a 24-inch raw layout before shop rounding.
Try this example- Rows
- 2
- Pieces
- 4
- Raw length
- 24 in
- Buy
- 0.75 yd
Start with the task
Useful answers before the first cut
Check pattern math
Add allowances, correct print scale, and work through circles, pleats, gathers, and binding.
See pattern math toolsVerify the method
Every result shows its formula, assumptions, cautions, and a practical check before cutting.
Read the calculation methodChoose the task
Ten sewing calculators
Cut layout plannerArrange repeated rectangular pieces and estimate how much fabric to buy.Rectangle yardageCompare both legal orientations for repeated rectangular cuts.Pattern repeatRound panel cuts to complete pattern repeats and plan seam alignment.Seam and hemTurn finished dimensions into cut dimensions with independent edge allowances.Print scaleCorrect a PDF pattern when its calibration square prints at the wrong size.BindingEstimate strip width, joins, and fabric for straight-grain or continuous bias binding.Circle skirtCalculate waist and outer radii, then check a conservative fabric footprint.Pleats and gathersConvert finished width and fullness ratio into source width and repeat counts.Curtain fabricEstimate panel count, matched cut drop, and total curtain fabric.Cushion coverPlan envelope or zippered cover pieces, piping, layout, and material.
A repeatable workflow
Measure → Plan → Check
- MeasureUse cut dimensions, verified usable width, units, direction, and repeat.
- PlanReview the formula, layout, purchase adjustment, and warnings.
- CheckReconcile one example and place physical templates before cutting.
Learn the method
Guide clusters
Buying and layout
7 original guides with examples and verification steps.
Start with How to Calculate Fabric Yardage Before You BuyPattern math
6 original guides with examples and verification steps.
Start with How to Add or Remove Seam AllowanceBinding and home projects
5 original guides with examples and verification steps.
Start with Bias Binding vs Straight-Grain BindingQuick checks
Four reference sheets
Fabric Width Reference Chart
Open referenceFabric Unit Conversion Chart
Open referenceCommon Seam and Hem Allowance Reference
Open referenceCircle, Pleat, and Gather Formula Sheet
Open referenceTransparent by design
See how every answer is reviewed
Formulas use canonical units, typed validation, worked fixtures, qualified source records, and a public corrections process.