Circle Skirt Calculator

Find fabric radius for a circle skirt.

Waist

Skirt length

Fabric radius (full circle) 28.775

Fabric square needed 57.549

Formula: radius = waist÷(2π) + length

Step-by-step with your numbers:

1. Values used:

2. Waist = 30

3. Skirt length = 24

5. Fabric radius (full circle) = 28.775

6. Fabric square needed = 57.549

Did we solve your problem today?

Find the cutting radius for a full-circle skirt.

The math behind it

waist radius = waist ÷ (2π); total radius = waist radius + skirt length.

30 in waist, 24 in length → ~28.8 in radius.

Half-circle?

Use waist ÷ π for the waist radius of a half-circle skirt.