There are numerous methods to estimate a person's body composition based on factors like skinfold thickness and underwater weight.. However, it is important to note that none of them actually measures percentage body fat (Howley & Franks, 2003, p. 99). The calculator provided below is no exception.
The calculator is based on the formula derived by the U.S. Naval Health Research Center to estimate a person's body fat from body circumferences and height (Hodgdon & Beckett, 1984). However, the formula is meant for Caucasians, and are thus, slightly inaccurate for Singaporeans. With this in mind, we have tweaked the formula slightly for improved accuracy.
Once again, please note that the calculator is just an estimation and not a perfect measurement. Use it as a reference to track your progress or for a rough gauge of your body composition.
Enter Your Measurements above and click Calculate.
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U.S Navy |
www.PT.com.sg |
| Percentage Body Fat |
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Refer to the table below (Cotton, R. T., 1997) to see if you are within the recommened body-fat-percantage range.
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Men |
Women |
| Essential Fat |
2% - 4% |
10% - 12% |
| Atheletes |
6% - 13% |
14% - 20% |
| Fitness |
14% - 17% |
21% - 24% |
| Acceptable |
18% - 25% |
25% - 31% |
| Obese |
>26% |
>32% |
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Measures 2 Fitness Indicators: Body Fat Percentage and Body Mass Index (BMI)
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Athelete mode for accurate results for atheles
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FAQ
Q: How do I calculate lean body mass?
A: If you would like to manually calculate your lean body mass you can do so by subtracting your body fat in pounds from your total body weight. You can determine the amount of body fat in pounds by multiplying your weight by the body fat percentage. For example, a 200lb person with 20% body fat would have 40 lbs of fat (200 X .20). His lean body mass would then be 200-40= 160lbs.
Q: How is body fat calculated?
A: Omron's Fat Loss MONITOR with Scale estimates the body fat percentage by using the Bioelectrical Impedance (BI) Method. Muscles, blood vessels and bones are body tissues having a high water content that conducts electricity easily. Body fat is tissue that has little electrical conductivity. The Fat Loss MONITOR with Scale sends an extremely weak electrical current of 50 kHz and less and 500 µA through your body to determine the amount of fat tissue. This weak electrical current is not felt while operating the Fat Loss MONITOR with Scale.
Q: Is there a recommended time to take a measurement of your body fat?
A: We recommend you take the measurement in the morning before you exercise, eat, drink or take a shower. This will give you opportunity to develop a trend and a good comparison by day.
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References
Cotton, R. T. (Ed.) (1997). Personal Training Manual (2nd Edition). San Diego: American Council on Exercise.
Going, S. and Davis, R. (2001). Body Composition. In J.L. Roitman (Ed.), ACSM's Resource Manual for Guidelines for Excercise Testing and Prescription (4th Edition, pp. 391 - 440).Baltimore: Lippincott Williams & Wilkins.
Hodgdon, .J. and Beckett, M. (1984). Prediction of Percent Body Fat for U.S. Navy Men and Women from Body Circumferences and Height. Reports No. 84-29 and 84-11. San Diego, Cal: Naval Health Research Center
Howley, E. T., and Franks, B. D. (2003). Health Fitness Instructor's Handbook (4th Edition, p. 99). Champaign, IL: Human Kinetics.
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