The Octagon Christmas Tree Skirt calculator computes the appropriate diameter of a skirt for your Christmas tree given its diameter at the bottom and also tells you the amount of fabric needed to make it.
INSTRUCTIONS: Choose units and enter the following:
- (D) Diameter of Christmas Tree (bottom diameter)
Octagon Tree Skirt Material (TSM): The calculator returns:
- (TSD) Diameter of the tree skirt in feet and inches,
- (FA) Fabric Amount needed in square yards of material,
- (oS) Length of the octagon sides (see diagram) in inches and feet.
- (EDG) Length of Edging trim in feet and inches.
The Math/ Science
If you are making or buying a tree skirt for your Christmas tree you might wonder what size you need for your tree and how much fabric it will take to make it. Fortunately Balsam hill has the information and we can help with the math.
https://www.balsamhill.com/christmas-tree-skirt-sizes
They have a guide to picking one of their offerings based on the height of the tree but since the width of trees can vary even at the same height the best way is to measure the diameter at the bottom of the tree. Balsam Hill's rule of thumb is to make the tree skirt diameter 6 inches bigger than the diameter of the tree. This would leave you with a tree skirt that comes out 3 inches farther than the tree all the way around.
Keep in mind that if you are making a tree skirt and you want it to be lined you would double the calculated amount of fabric. Also this calculation is the area of a square that your circular tree skirt will fit inside so that you can easily cut it out and be sure it is enough.
Calculate Fabric Needed for Christmas Tree Skirts
- Fabric for Circular Christmas Tree Skirt
- Fabric for Hexagon Christmas Tree Skirt
- Fabric for Octagon Christmas Tree Skirt
