Remember: Waist size of a kilt and trouser or pant is always different.
Following are the important steps which you must follow for the measurement of kilts.
From this starting point measure around the stomach, this is the waist measurement. Note, this waist measurement is not the same as a trouser waist measurement.
HIP / SEAT
Take the widest area across the bottom, and measure around, do not put the tape measure tight.
Measure from the stomach, then straight down to the desired length. The standard kilt length is 24 inches