Body Mass Index (BMI)

BMI is the typical gauge used by medical personnel to determine a person's body fat percentage.  Of course, this is not a fair measurement for people at extremes of muscle mass who carry a lot of their weight purely in muscle alone.

For the average person, BMI gives an estimate on how much of their body is fat tissue.

A healthy value is considered between 18.5 and 24.9.  Being under or over this range typically suggests too little or too much body fat.

Calculate Your BMI

Tools Required
  1. Tape Measure
  2. Bathroom Scales

BMI = Weight (kg) / Height (m) / Height(m)


Relative Fat Mass (RFM)

Recent studies indicate RFM gives a more accurate assessment of a person's body fat when compared to the traditional BMI measurement.

Calculate Your RFM

Tools Required
  1. Tailors Tape Measure


For adult males: RFM = 64 - (20 x Height (m) / Waist Circumference (m))

For adult females: RFM = 76 - (20 x Height (m) / Waist Circumference (m))