Body Fat Calculator
Estimate body fat with the U.S. Navy method.
Body fat
16.9%
Category: Fitness
Introduction
The U.S. Navy tape-measure method is a decent field estimate — cheap, no calipers, ±3–4% of DEXA in most people.
What is Body Fat Calculator?
Body Fat Calculator helps you estimate body fat with the u.s. navy method. It belongs to the Body composition group within health and fitness tools on The Daily Tools. Enter your values, get an immediate result, and adjust inputs to explore different scenarios.
Definition: Body Fat Calculator is a free, browser-based calculator that estimate body fat with the U.S. Navy method.
Formula
Body fat % ≈ U.S. Navy circumference method from neck, waist, and hip measurements
How it works
Method. U.S. Navy circumference formula using log10 of neck, waist and (for women) hip in cm, plus height. Take measurements with a soft tape, at end-normal exhale, unclothed at the site.
Accuracy. Compared to DEXA the method has an average error of ±3–4%. It over-estimates for very lean people and under-estimates for very heavy ones.
Worked example
Example: Using the Body Fat Calculator
Inputs: Enter values relevant to body composition — for example, the measurements or amounts described in the tool fields above.
- Open the Body Fat Calculator and review the input fields.
- Apply the formula: Body fat % ≈ U.S. Navy circumference method from neck, waist, and hip measurements
- Adjust inputs to compare scenarios side by side.
You receive an immediate estimate body fat with the u.s. navy method — useful for planning and comparison.
Use cases
- Quick body composition estimates during planning or study
- Comparing scenarios by adjusting inputs in the Body Fat Calculator
- Private calculations when you don't want data uploaded to third-party servers
- Searching for "body fat" and needing an instant answer
- Searching for "navy method" and needing an instant answer
Advantages
- 100% browser-based — your data never leaves your device
- No sign-up, no ads required to calculate
- Instant results with a clean, readable interface
- Works offline after the page loads
- Transparent formula shown on this page
Limitations
- Results are estimates — not professional medical, financial, legal, or religious advice
- Individual health varies — consult a healthcare provider for personal guidance
- The Daily Tools does not save your history between sessions
Frequently asked questions
- Is the Body Fat Calculator free to use?
- Yes. Body Fat Calculator on The Daily Tools is completely free, requires no account, and runs entirely in your browser.
- Does The Daily Tools store my inputs?
- No. Your numbers and text never leave your device. The Daily Tools has no backend database for calculator inputs.
- Who should use the Body Fat Calculator?
- Anyone who needs a quick health and fitness estimate — students, professionals, or everyday users exploring body composition questions.
- How accurate is the Body Fat Calculator?
- Results follow the standard formula shown on this page. They are estimates for planning — not a substitute for professional medical advice.
- Can I use the Body Fat Calculator on mobile?
- Yes. The Daily Tools is fully responsive and works on phones, tablets, and desktops.
Sources & references
- World Health Organization — BMI classification
- Mifflin-St Jeor equation (BMR/TDEE tools) — Standard resting metabolic rate estimate
- The Daily Tools Methodology
Key points
- Body Fat Calculator is a free, browser-based calculator that estimate body fat with the U.S. Navy method.
- Formula: Body fat % ≈ U.S. Navy circumference method from neck, waist, and hip measurements
- Private, browser-only processing
- Related search: body fat
- Related search: navy method