There are many ways to measure body fat percentage.
However, I prefer the DEXA Scan.
The reasons are:
It is 99% accurate
It is very fast and efficient
It is also danger free
It has no side effects
Anyone can do it
However, there is a disadvantage to it
It is very expensive
Also it is not repeatable unless you are willing to spend $110 per week.
A short description of DEXA:
Dual Energy X-ray Absorptiometry known as DEXA is fast becoming the “new” gold standard of body fat measurement because it’s based on a three-compartment model that divides the body into total body mineral, fat-free soft (lean) mass, and fat tissue mass. Hydrostatic Weighing on the other hand only uses a 2 compartment model (fat free mass and fat mass).
DEXA also allows for body fat distribution analysis, so you can figure out with precision how fat is distributed in various parts of your body. In the past, DEXA was only used to measure bone mineral density for ostopenia and osteoporosis in older individuals. The procedure uses a body scanner with low dose x-rays, so it’s completely safe, and takes about 10-20 minutes.