CALQOS™

The Global Online Calculation Platform

Life • HEALTH & FITNESS

Body Fat Calculator

Calculate estimated body fat percentage, lean body mass, and fat mass from tape measurements.

Calculation Inputs & Parameters

male
84 (Default)
38 (Default)
178 (Default)
78 (Default)
Estimated Body Fat Percentage
15.7%
Lean Body Mass
65.8 kg
Fat Mass
12.2 kg
Total Body Weight
78 kg

How the Calculation Works

Uses the US Navy circumference-based body fat estimation formula.

Formula: US Navy Body Fat Regression Equation

Practical Worked Example

Given Inputs: Male | 84cm waist | 38cm neck | 178cm height

Calculated Output: Body Fat: ~15.2%

  1. Logarithmic tape measurement calculations.
Pro Tip: Tape measurements are estimates; consider using body fat calipers or DEXA scans for higher precision.

Frequently Asked Questions & Detailed Insights

How accurate is the Body Fat Calculator?

The Body Fat Calculator implements standardized international formulas with double-precision floating-point arithmetic. All equations are verified against standard reference models.

Are my numbers or calculations stored on CALQOS™ servers?

No. CALQOS™ is designed client-first: all calculations run locally inside your browser session. Your financial and numerical inputs never leave your device.

Can I export or share my calculation results?

Yes. You can copy a shareable link that encodes your current input parameters or print a clean, print-optimized calculation summary directly from your browser.

What variables affect the results of the Body Fat Calculator?

Results depend on Biological Sex, Waist Circumference (cm), Neck Circumference (cm), Height (cm), Current Weight (kg). Use our sliders or manual text inputs to adjust variables and observe real-time recalculations.

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