CalculatorAI
Circle Skirt Calculator
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How to Make a Circle Skirt
A circle skirt is a timeless garment known for its flow and drape. The key to a perfect fit is calculating the correct radius for your waist measurement based on the fullness of the skirt you want.
Formulas Used
The calculator uses the mathematical constant Pi (π ≈ 3.14) to determine the radius (r) needed to cut a hole that matches your waist circumference (C).
- Full Circle (360°): Radius = Waist / 6.28
- 3/4 Circle (270°): Radius = Waist / 4.71
- Half Circle (180°): Radius = Waist / 3.14
- Quarter Circle (90°): Radius = Waist / 1.57
How to Measure
- Waist: Measure around where you want the skirt to sit (natural waist or hips). This is your Waist Circumference.
- Length: Measure from that waist point down to where you want the hem to end. This is your Skirt Length.
*Tip: The calculator adds 1 inch (or 2.5cm) to the total length for hem allowance. Remember to add your own seam allowance (usually 5/8") to the waist radius when cutting!
help Frequently Asked Questions
How much fabric do I need?
It depends on the length and type of skirt. Generally, for a knee-length full circle skirt, you need about 2-3 yards of wide fabric (60"). For longer skirts (floor length), you will likely need to cut semi-circles out of 4-5 yards of fabric and sew them together.
Do I need an elastic waistband?
If you want a fitted waist with a zipper, measure your exact waist. If you want an elastic waistband, measure your hips instead of your waist! The waist opening needs to be wide enough to pull up over your hips.
Which skirt has the best "twirl"?
The Full Circle skirt has the most volume and provides the classic "twirl" effect. It uses the most fabric but looks the most dramatic.