Free Body Fat Calculator — US Navy Method (±3%) | 2026

Free Body Fat Calculator — US Navy Method (±3%) | 2026

Body Fat Percentage Calculator

Estimate your body fat using validated formulas (US Navy method, YMCA, BMI‑based).

Choose Calculation Method

0 %
AVERAGE
▼
0%
2%10%20%30%40%

📊 Your Body Composition

0 kg
Lean Body Mass
0%
0 kg
Fat Mass
0%

📚 Related Metabolic Tools

BMI Calculator TDEE Calculator Calorie Deficit Blood Sugar Converter A1C Converter Prediabetes Risk Protein Calculator Macro Calculator
⚕️ DISCLAIMER: This calculator provides estimates (±3‑5% error). For precise body composition, use DEXA or hydrostatic weighing. Not a diagnostic tool. Consult a healthcare provider for medical advice.

Comments

Post a Comment

Popular posts from this blog

Prediabetes & CGM Coverage — What Health Insurers Actually Say | 2026

Image
Prediabetes & CGM Coverage — What Health Insurers Actually Say | 2026 There's a particular moment that a lot of health-aware adults seem to share — the moment a lab result arrives that isn't alarming enough to feel urgent, but isn't clean enough to ignore. A fasting glucose of 103. An A1C of 5.8 . Numbers that sit in the gray zone between normal and clinical concern, accompanied by a note from the doctor that says something like "worth watching" or "let's check again in six months." And then the questions start. Not just about what the numbers mean, but about what they mean for insurance. Can this affect my premiums? Will my health plan cover a glucose monitor now? Does prediabetes count as a pre-existing condition? What about that wearable CGM I've been reading about — would that be covered? These questions are reasonable, and they come from a genuinely confusing intersection: metabolic health data that's becoming more sophisti...
Read more

Muscle Mass vs. Muscle Quality — What Many Midlife Adults Notice in Everyday Tasks

Image
Muscle Mass vs. Muscle Quality — What Many Midlife Adults Notice in Everyday Tasks You're standing in the grocery aisle holding a gallon of milk in each hand, and something feels off. Not impossible, not even truly difficult, but your forearms burn in a way they didn't used to. The weight's the same. Your arms look roughly the same size they've always been. So what changed? I've chatted with folks who've hit this wall time and again — that bewildering realization that their body doesn't respond the way it used to despite looking more or less the same in the mirror. They haven't lost dramatic amounts of weight. Their clothes fit similarly. Yet stairs feel steeper, bags feel heavier, getting up from the floor takes an extra beat of effort. The disconnect lives in the difference between muscle mass and muscle quality , two terms that sound interchangeable but describe fundamentally different aspects of how muscle tissue functions. Mass is about q...
Read more

Insulin Resistance as a 20-Year Signal — What Research Shows | 2026

Image
Insulin Resistance as a 20-Year Signal — What Research Shows | 2026 There's a particular kind of quiet that surrounds metabolic problems in their early stages. No alarm. No obvious symptoms. Just a body gradually, almost imperceptibly, shifting its relationship with energy — year by year, meal by meal, decade by decade. And by the time a number on a lab panel finally flags something, the underlying process has often been in motion for a very long time. Research suggests that the earliest detectable signs of insulin resistance — elevated fasting glucose, rising body mass index, subtle shifts in insulin sensitivity — can appear more than twenty years before a clinical diagnosis arrives. Twenty years. That's not a brief warning window. That's a slow-rolling story the body has been telling in a language most standard checkups aren't designed to read fluently. Understanding that story, and what it actually means at the cellular and systemic level, is what this pie...
Read more

Morning Glucose Spikes — Why Blood Sugar Rises at Dawn | 2026

Image
Morning Glucose Spikes — Why Blood Sugar Rises at Dawn | 2026 Many people who track their blood sugar levels notice something unexpected: their glucose readings climb in the early morning hours, even before they've eaten anything. This pattern, which appears as a visible upward trend on continuous glucose monitors and other tracking devices, often raises questions about what's happening inside the body during those quiet hours before dawn. It's a pattern that real-time glucose data has made visible to thousands of people who'd otherwise have no idea their bodies were this active while they slept. Morning glucose elevation is a normal physiological response that occurs in most people, though the degree varies from person to person. Understanding why this happens, what it looks like on metabolic tracking devices, and how it fits into broader patterns of metabolic health has become increasingly relevant as more Americans use wearable technology to monitor their bod...
Read more

Healthcare Costs After 50 — Why They Hit Like a Second Mortgage | 2026

Image
Healthcare Costs After 50 — Why They Hit Like a Second Mortgage | 2026 There's a moment — somewhere in the mid-50s for a lot of people — when the abstract concept of "retirement healthcare costs" stops being abstract. Maybe it's the first time a prescription refill comes with a three-digit co-pay. Maybe it's the Medicare enrollment paperwork that arrives in the mail and turns out to be forty pages of decisions nobody prepared you to make. Maybe it's a conversation with a financial planner who says, with practiced calm, that a couple retiring today at 65 may need somewhere north of $300,000 set aside specifically for healthcare expenses over their remaining years — not counting long-term care costs . Three hundred thousand dollars. For healthcare. On top of housing, food, and whatever version of retirement living someone actually planned for. It lands like a second mortgage that nobody listed on the closing documents. The numbers aren't invented...
Read more

Metabolic Health & Employee Benefits — What HR Won't Tell You | 2026

Image
Metabolic Health & Employee Benefits — What HR Won't Tell You | 2026 There's a version of the employee benefits conversation that happens during open enrollment every fall. A benefits coordinator walks through the plan options, explains the deductible tiers, runs through the dental and vision add-ons, and mentions the wellness program in passing — something about a gym reimbursement or a health fair in November. It's a transactional conversation. Efficient. Mostly administrative. And then there's the version of the conversation that doesn't happen in that room — the one happening in the actuarial spreadsheets that determine what those plan options cost in the first place, what the wellness program is actually designed to address, and why certain benefit structures have evolved the way they have over the past decade of employer healthcare cost escalation. That version of the conversation has quite a lot to do with metabolic health. With chronic disease pr...
Read more

Post-Lunch Energy Crash — The Glucose Spike Behind the 2PM Fog | 2026

Image
Post-Lunch Energy Crash — The Glucose Spike Behind the 2PM Fog | 2026 It happens with a kind of reliable, almost clockwork predictability. Lunch ends. The meeting at 1:30 wraps up. And somewhere around two in the afternoon, a heaviness settles in — behind the eyes, in the shoulders, somewhere vague and diffuse that resists easy description. The screen blurs slightly. The inbox feels enormous. A simple task that would've taken ten minutes at 10 a.m. feels, right now, like navigating a fog bank. Most people attribute it to something they ate. Or didn't eat. Or to a bad night's sleep. Or just to working too hard. The honest answer is that it's probably all of those things in varying proportions, layered on top of genuine biology — specifically, the interplay between post-meal glucose dynamics, the insulin response that follows , and a set of circadian rhythms that are, around mid-afternoon, already nudging the body toward a state of reduced alertness regardless of...
Read more

From Weigh-Ins to Dashboards — Metabolic Wellness at Work | 2026

Image
From Weigh-Ins to Dashboards — Metabolic Wellness at Work | 2026 There was a time — not that long ago, really — when the centerpiece of the corporate wellness calendar was the weight-loss challenge. The office version: sign-up sheets in the break room, teams competing over eight weeks, progress tracked by what the scale said on Friday mornings. Simple. Visible. Measurable in the most direct way possible. That era is winding down. Slowly, unevenly, with plenty of variations by company size and industry — but the directional shift is real. Employers are beginning to talk differently about employee health. The language has changed. And the language shift is worth examining carefully, because it reflects something more substantial than a rebranding exercise. "Metabolic optimization." "Cardiometabolic health." "Continuous biomarker monitoring." "Population health risk stratification." These phrases, once reserved for clinical research presen...
Read more

Waking Up Tired With Normal Labs — Why Your Data Disagrees | 2026

Image
Waking Up Tired With Normal Labs — Why Your Data Disagrees | 2026 The alarm goes off. You've technically slept seven hours — your tracker confirmed it, green ring and everything. Your last blood work came back fine . Nothing flagged, nothing starred, no calls from the clinic. And yet there's this weight behind your eyes. A heaviness that doesn't lift with coffee, doesn't really budge by ten in the morning, sits on your shoulders like a coat you can't take off. You feel like something's off. But the data says you're fine. This mismatch — between subjective experience and objective measurement — is one of the most common frustrations reported by health-aware adults who've invested in tracking their own biology. It's not imagined. It's not a hypochondriac's spiral. It's a genuine and increasingly recognized limitation of how current health data systems capture — or fail to capture — the full picture of how a human body is actually ...
Read more

Metabolic Checkups Across Your 30s, 40s & 50s — What Changes | 2026

Image
Metabolic Checkups Across Your 30s, 40s & 50s — What Changes | 2026 There's a particular kind of surprise that tends to arrive sometime in a person's late thirties or early forties — not dramatic, not sudden, but persistent. The energy that used to feel reliable starts coming with fine print. The weight that once shifted easily with a few weeks of better habits now seems to have developed opinions of its own. Lab numbers that were never discussed at prior physicals suddenly get a paragraph of explanation from the doctor. None of this is random. The body's metabolic machinery doesn't operate on a fixed setting across a lifetime — it shifts, adjusts, and recalibrates in response to hormonal changes, accumulated lifestyle patterns, and the simple passage of time. And the way clinicians talk about screening, monitoring, and long-term metabolic health tends to evolve right along with those biological shifts. This piece explores what that evolution looks like —...
Read more