From Waist Measurement to Printable 1:1 Pattern
Working out skirt measurements by hand is where many sewing projects stall, especially when you switch between inches and centimetres. Skirt Calculator is a free web tool that turns a waist measurement and skirt length into everything you need to cut, including fabric yardage for your fabric width and a printable 1:1 pattern. This note focuses on tiered skirts and the workflow around it; to follow along, see the skirtcalculator.com web app.
How to plan a skirt step by step
Go to Skirt Calculator; it is free and everything runs in the browser.
Enter the waist measurement and finished length for the skirt you want to make.
Select your fabric width: 45 or 60 inches (115 or 150 cm), or a custom width.
Review the panel layout diagram to see how the pieces sit on the fabric.
Print the tiled 1:1 pattern PDF and measure the test squares before cutting.
For pleated or tiered designs, switch to the pleat or tiered skirt calculator on the same site.
Key capabilities
Inches (with fractions) and centimetres.
Tiered, gathered skirt and flounce calculators.
Gathering ratio and continuous bias tape calculators.
Fabric yardage for 45"/60" (115/150 cm) or custom widths, with a panel layout diagram.
Cut radius with seam allowance and a waistband piece.
Zipper or pull-on elastic waist options for circle skirts.
Use cases
Tiered and gathered skirts: Size gathered tiers, a dirndl-style skirt or a ruffle with the gathering ratio calculator.
Costumes and capes: Plan a circle cape or a circular flounce with the same approach.
First circle skirt: Enter a waist measurement and skirt length and get the cutting measurements and yardage before buying fabric.
Metric and imperial: Switch between inches with fractions and centimetres, or convert inch fractions to cm.
More calculators and guides
Beyond skirts, the site also has calculators for curtains and curtain pleats, circle capes, round tablecloths, fabric yardage and inch-fraction to cm conversion, plus guides on circle skirt math, knife versus box pleats and hemming a circle skirt.
What it is not
It is not a shop selling fabric or paper patterns, and it is not an AI tool. It is a set of free calculators that run in your browser, in inches or cm, without an account.
Summary
Skirt Calculator keeps the measuring and planning in one place: measurements in, cutting numbers, yardage and a printable pattern out. It is free, works on desktop and mobile browsers and needs no sign-up. Open it, enter your measurements and check the pattern before you cut.