Circle Skirt Calculator

Turn your waist measurement and skirt length into a clear circle skirt cutting guide.

Circle Skirt Calculator helps you draft full, three-quarter, half and quarter circle skirt patterns without working through circle formulas by hand. Choose the flare you want, enter your measurements and see the waist and hem cutting radii together on a labeled diagram.

MAKE YOUR NEXT SEWING PROJECT EASIER
- Four circle skirt shapes: full circle, three-quarter circle, half circle and quarter circle.
- Two main inputs: waist circumference and finished skirt length.
- Separate waist seam and hem allowances, so you can set each one for your project.
- Centimeters or inches, with your entered values converted when you switch units.
- A clear diagram showing A, the waist cut radius, and B, the hem cut radius.
- Copy cutting measurements and drafting notes together.
- Reopen your last saved pattern when you return to the app.

FROM MEASUREMENTS TO YOUR OWN PATTERN
1. Choose your circle skirt shape.
2. Enter your waist measurement and finished length. Adjust allowances if needed.
3. Use the two radii to draw your curves from the same center point.

Designed for home sewists, fashion students and costume makers who want a practical circle skirt pattern calculator at hand. The interface is available in English, Korean and Japanese.

BEFORE YOU CUT
The diagram is a drafting guide, not a print-to-scale sewing pattern. The displayed flat pattern bounds describe a bounding rectangle, not fabric yardage to buy. Fabric width, folding and cutting layout, waistband, closure and side seam allowances are not calculated. No wearing ease is added. Check your draft on paper and add the details needed for your fabric and chosen construction.

Recent changes:
Redesigned the calculator and cutting guide, added Korean and Japanese, and refined measurement copying, cm/in conversion and allowance editing.