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Body fat formula
From www.bmi-calculator.net
The body fat percentage function on home weight scales are of suspect accuracy. They work on resistance to electricity flowing through the body from one of the metal pads to the other. If like me you don't wear shoes much, the skin on your foot will be thicker. The following method will probably give a better figure.
The best time to use this formula is in the morning. Your body weight and waist measurements are the most accurate just after you wake up from 7-8 hours of sleep
The formula below will not calculate your exact body fat percentage. The most accurate way is underwater weighing, but this formula should give you a consistent measurement you can use as a guideline so you can determine if you're losing body fat and/or muscle.
| Body Fat Formula For Women |
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Factor 1 |
(Total body weight x 0.732) + 8.987 |
Factor 2 |
Wrist measurement (at fullest point) / 3.140 |
Factor 3 |
Waist measurement (at navel) x 0.157 |
Factor 4 |
Hip measurement (at fullest point) x 0.249 |
Factor 5 |
Forearm measurement (at fullest point) x 0.434 |
Lean Body Mass |
Factor 1 + Factor 2 - Factor 3 - Factor 4 + Factor 5 |
Body Fat Weight |
Total bodyweight - Lean Body Mass |
Body Fat % |
(Body Fat Weight x 100) / total bodyweight |
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| Body Fat Formula For Men |
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Factor 1 |
(Total body weight x 1.082) + 94.42 |
Factor 2 |
Waist measurement x 4.15 |
Lean Body Mass |
Factor 1 - Factor 2 |
Body Fat Weight |
Total bodyweight - Lean Body Mass |
Body Fat % |
(Body Fat Weight x 100) / total bodyweight |
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(C) Peter Scott 2015
Last edit 15 April 2017