How to Calculate a Waist Band for a Sewing Project
- 1). Measure the person's waist with a tape measure. Ensure that you measure where the garment will sit, and not the natural waist. Some clothing items, such as ladies jeans and slacks, do not sit at the natural waist.
- 2). Add one inch to the waist measurement to determine the length of the elastic. This will allow for overlap in sewing.
- 3). Cut the non-roll elastic to the size determined in steps 1 and 2.
- 4). Determine the size of the fabric waistband casing. For most material, this should be approximately three inches larger than the waist measurement when finished. The heavier the fabric is, then the closer to the actual waist measurement the fabric elastic casing should be. A heavy fabric may have a casing only one to two inches larger than the elastic.
- 5). Sew your garment with this waistband size in mind.