Circle Skirt Yardage Calculator

Formula

The formula to calculate the yardage needed for a circle skirt (Y) is:

$Y = \left(\frac{W}{2 \pi} + L + H\right) \times 2 \div 36$

Where:

Y – The yardage needed.
W – The waist circumference in inches.
L – The desired length of the skirt in inches.
H – The hem allowance in inches.
$\pi$ – The mathematical constant Pi (approximately 3.14159).

Definition

Circle Skirt: A type of skirt that is cut in the shape of a circle with a hole in the center for the waist. This design creates a full, flowing skirt that drapes beautifully and moves gracefully.
Waist Circumference (W): The measurement around the waist.
Desired Length of Skirt (L): The length from the waist to the hem.
Hem Allowance (H): The additional fabric needed for hemming.

Example

Let's say the waist circumference (W) is 30 inches, the desired length of the skirt (L) is 25 inches, and the hem allowance (H) is 1 inch. Using the formula:

$Y = \left(\frac{30}{2 \times 3.14159} + 25 + 1\right) \times 2 \div 36 \approx 1.71 \text{ yards}$

So, the yardage needed for the circle skirt is approximately 1.71 yards.

How to Calculate a Circle Skirt

Definition: Calculate the fabric needed for a circle skirt.

Formula: $R = \frac{W}{2\pi}$

$R$ : Radius of the waist
$W$ : Waist measurement
$\pi$ : Pi (approximately 3.14159)

Example: $R = \frac{30}{2\pi}$

$W$ : 30 inches

Circle Skirt Calculator Chart

Definition: Use a chart to determine the fabric needed for different sizes of circle skirts.

Formula: $L = R + H$

$L$ : Length of the fabric
$R$ : Radius of the waist
$H$ : Desired length of the skirt

Example: $L = 4.77 + 20$

$R$ : 4.77 inches
$H$ : 20 inches

Circle Skirt Size Calculator

Definition: Calculate the size of a circle skirt based on waist measurement and desired length.

Formula: $L = R + H$

$L$ : Length of the fabric
$R$ : Radius of the waist
$H$ : Desired length of the skirt

Example: $L = 5 + 25$

$R$ : 5 inches
$H$ : 25 inches

Circle Skirt Fabric Calculator

Definition: Calculate the amount of fabric needed for a circle skirt.

Formula: $A = \pi (R + H)^2$

$A$ : Area of the fabric
$R$ : Radius of the waist
$H$ : Desired length of the skirt
$\pi$ : Pi (approximately 3.14159)

Example: $A = \pi (6 + 30)^2$

$R$ : 6 inches
$H$ : 30 inches