Body Fat % Calculator (U.S. Navy Method)

Accurate body fat percentage, lean body mass, and fat mass estimates with independent unit controls and anatomical placement cues.

Gender

Height

For 5 ft 11 in, choose ft / in and enter 5 in feet and 11 in inches. Results update as you type.

Weight

Neck Circumference

Measure just below larynx (Adam's apple), tape sloping slightly downward.

Waist Circumference Men: horizontally across navel. Women: at narrowest natural waistline.

Body Fat Percentage: 15.4%
Body Fat Category: Fitness (14-17%)
Fat Mass: 11.6 kg
Lean Body Mass: 63.4 kg

For Coaches & Bloggers: Embed this tool

Are you a personal trainer, coach, or fitness blogger? Embed this free, verified Body Fat % Calculator (Navy Method) widget directly into your client portal or blog article with automatic responsive styling.

<div style="max-width:420px;margin:20px auto;border:1px solid #e2e8f0;border-radius:12px;padding:20px;font-family:system-ui,-apple-system,sans-serif;background:#ffffff;box-shadow:0 4px 12px rgba(0,0,0,0.06);text-align:center;">
  <h4 style="margin:0 0 8px;font-size:1.1rem;color:#0f172a;">Body Fat % Calculator (Navy Method)</h4>
  <p style="font-size:0.88rem;color:#64748b;margin:0 0 16px;line-height:1.45;">Estimate body fat percentage, lean body mass, and fat mass based on anthropometric circumference measurements.</p>
  <a href="https://planworkouts.com/calculators/body-fat/" target="_blank" rel="noopener" style="display:inline-block;background:#ff3b2f;color:#ffffff;padding:10px 20px;border-radius:6px;text-decoration:none;font-size:0.9rem;font-weight:600;">Open Calculator &rarr;</a>
  <div style="margin-top:12px;font-size:11px;color:#94a3b8;">Free tool provided by <a href="https://planworkouts.com/" target="_blank" rel="noopener" style="color:#64748b;font-weight:600;text-decoration:none;">PlanWorkouts</a></div>
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