The calmest flare needs the largest radius
A 90° total sector carries the entire waist, so the inner radius is large and the hem grows moderately. It is closer to an A-line direction but still uses circular geometry without darts.
Circle skirt builder
Values are centimetres. The waist is the body line where the finished skirt will sit; the generator adds the selected wearing ease before calculating the radius.
Before generating
Use the notes below to understand which measurements shape the draft, which options change construction, and what should be measured again when values conflict. Presets are starting points; the submitted values drive the result.
A 90° total sector carries the entire waist, so the inner radius is large and the hem grows moderately. It is closer to an A-line direction but still uses circular geometry without darts.
A 180° finished sector gives more sweep than a quarter circle without the fabric demand of a full circle. Two 90° panels provide balanced side seams and practical cutting.
The full 360° waist sits on a complete circle. Four 90° panels keep each printable piece manageable and distribute seams evenly around the garment.