免费生物阻抗体成分估算器
基于生物电阻抗原理估算体脂率和瘦体重。
lbs
%
inches
Fat Mass
39.6 lbs
Lean Mass140.4 lbs
Estimated Muscle Mass77.2 lbs
Estimated Body Water56.9 %
Fat Mass vs Body Weight
公式
Understanding BIA (Bioelectrical Impedance Analysis)
BIA scales send a small electrical current through your body. Fat tissue conducts less electricity than lean tissue, allowing the device to estimate body composition.
From BIA Body Fat % We Can Derive
计算示例
A 180 lb male at 22% body fat per BIA scale.
- 01Fat mass = 180 x 0.22 = 39.6 lbs
- 02Lean mass = 180 x 0.78 = 140.4 lbs
- 03Est muscle = 140.4 x 0.55 = 77.2 lbs
- 04Est water = 0.78 x 73 = 56.9%
常见问题
How accurate are BIA scales?
Consumer BIA scales can be off by 3-8% for body fat. They are most useful for tracking trends over time rather than absolute accuracy.
What affects BIA accuracy?
Hydration level, recent exercise, meals, and time of day all affect readings. Measure at the same time under the same conditions for best comparisons.
Is BIA better than BMI?
BIA provides more information than BMI because it distinguishes between fat and lean tissue. However, neither is as accurate as DEXA scanning.
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