And please remember that Alan's method of determining the amount of fabric is what you should use if you are using Tartan fabric. Depth of pleat will be determined by the Sett of the Tartan.

If you are using solid fabric, you set the Sett size. So a solid kilt may have a totally differant amount of fabric that one of Tartan.

Knowing the Sett size is not critical when ordering your fabric only when making the kilt.