For a basic panelled skirt: curve the bottom edge and add a hemming allowance (2"/5cm). Add a seam allowance (5/8", 1.5cm) at each side, and then curve the top edge inwards, towards the bottom of the skirt. Add seam allowance for the waistband taken from this curved line, of 5/8" (1.5cm).
 It is now possible to work out what the width of the hem will be without any godet, and then adjust accordingly. Something to remember is that a person's arm span (finger tip to finger tip when fully extended) is approximately equal to their height, so if I wanted to hold my skirt straight out to my sides, it would have to be over 10' (3.5m) in circumference at the hem! Now you don't need to do this, but you should get a feeling for where you want your arms to be when you hold up your skirt, and your minimum skirt hem is double the distance between your hands. The calculator will tell you the hem length of the basic skirt. To add more to this, you start designing your godet. In this diagram, (d) will be half the difference between the hip and waist measurements (e) is the distance from waist to hips, and (f) is the extension of the godet at the hem (g) is the difference between the required length and the hip depth As before, draw a parallel line a distance (f) away from the rectangle's edge. Pivoting your measure at the hip point, measure a distance (g) to hit these lines. Round off the hem, and add seam allowances, as for a basic panelled skirt, above.
Measurements in: Inches Centimetres
Enter:
Required length
Number of panels
Waist measurement
Hip measurement
Depth from waist to hip
Desired width of hem, if known
Fabric width :
90cm/36in 112-5cm/45in 150cm/60in
Check if hip-skirt required