A note on BMI: BMI is calculated from height and weight alone — it does not account for muscle. People with a high muscle mass will often score in the "high" range even when their body composition is excellent. It was designed as a population screening tool, not a fitness measure for individuals.
Weight & body composition
Weight
Your total body weight — muscle, fat, water, bone, and organs all combined. It's a starting point but doesn't tell the whole story on its own.
Body fat %
What percentage of your total weight is fat. More meaningful than weight alone — two people can weigh the same but have very different amounts of fat.
Under 25% is generally healthy for women. Athletic range is roughly 14–20%.
Fat mass
The actual pounds of fat on your body. This is your body fat percentage converted to a weight number.
Fat-free body weight
Everything that is not fat — muscle, bone, water, and organs combined. Also called lean mass. Higher is generally better, especially as you age.
Body water
How much of your body weight is water. Muscle holds a lot of water, so more muscle means higher body water. A higher percentage is a good sign.
Dehydration before a scan will make your numbers look worse. Always scan well-hydrated.
Protein
Protein stored in your body, mostly in your muscles. Higher protein mass means more muscle. Goes up when you're eating enough protein and lifting consistently.
Muscle
Muscle mass
Total pounds of muscle in your body. More muscle means a faster metabolism, better strength, better blood sugar control, and healthier aging.
Muscle rate
Muscle as a percentage of your total body weight. The higher this number, the more of you is muscle relative to everything else.
Skeletal muscle
The muscles you use to move — the ones you train at the gym. This is the most important muscle number to watch over time.
This is the number that goes up when your workouts are working.
SMI
Skeletal Muscle Index — your skeletal muscle amount adjusted for your height. Doctors use this to screen for muscle loss as you age. Higher is better.
Bone mass
The estimated weight of your bones. Heavier bones generally indicate denser, stronger bones. Lifting weights helps maintain and build bone density, especially as you age.
Fat distribution
Subcutaneous fat
Fat stored just under your skin — the kind you can pinch. Less medically dangerous than visceral fat, though high amounts are still worth reducing over time.
Visceral fat
Fat stored deep in your belly, wrapped around your organs — liver, stomach, intestines. This is the more dangerous type. High levels raise risk of heart disease and diabetes.
Scale of 1–59. Under 9 is healthy. Under 5 is excellent.
Visceral fat grade
A numbered score from 1 to 59 rating how much visceral fat you have. Lower is better. Under 9 puts you in the healthy zone.
Metabolism & overall health
BMR
Basal Metabolic Rate — the calories your body burns just existing, doing nothing. Breathing, pumping blood, keeping your organs running. More muscle means a higher BMR.
This is the minimum calories your body needs daily even if you stayed in bed all day.
BMI
Body Mass Index — weight divided by height squared. A rough screening tool that does not account for muscle. Muscular people often score "high" even when their body composition is excellent.
Designed for population statistics, not individuals. Not reliable for athletes or muscular people.
Body age
An estimate of how old your body functions based on your composition — muscle, fat, hydration, metabolism. Lower than your real age means your body is performing younger than your birth year.
Ratios & scores
WHR
Waist-to-Hip Ratio — your waist measurement divided by your hip measurement. A higher number means more fat around the middle relative to the hips.
Under 0.85 is the healthy target for women.
Body score
An overall score out of 100 summarizing your full body composition. The scanner's way of giving you one number to track over time. Very muscular people can score above 100.
Obesity level
How the scanner classifies your current weight relative to a healthy target for your height and body composition — not just BMI. "Normal" is the goal range.
Body type
A category the scanner assigns based on your fat and muscle levels together. "Athletes" means high muscle with standard or low fat. This is the best category to be in.
Segmental & balance analysis
Segmental fat analysis
Fat broken down by body region — left arm, right arm, trunk, left leg, right leg. Shows whether fat is distributed evenly or concentrated in one area.
Muscle balance
Muscle broken down by region and compared left vs. right. Imbalances can signal overuse or weakness on one side — useful for spotting injury risk early.
Body balance
How evenly distributed your muscle is between upper body, lower body, and left vs. right side. "Slightly unbalanced" is very common and not a cause for concern.
Bioelectrical impedance
The method the scanner uses to measure your body composition. It sends a tiny, painless electrical signal through your body. Fat slows it down; muscle and water let it pass easily. That resistance is how it estimates everything.