Fitness
GuideBest BMI Range for Men
Learn how BMI ranges are commonly interpreted for men and when muscle mass can make BMI less useful.
June 6, 2026
Pairs with a related calculator
Fitness
Performance and body metrics
Lean Body Mass Calculator
Lean Body Mass Calculator shows how much of your body weight is made up of muscle, bone, water, and organs rather than body fat.
Updated 2026-06-06 3 article sections Calculator, explanation, and FAQ
What you get
A result, a short explanation, and links to related tools.
Best for
Body measurements, calories, and training goals
Tip
Use the calculator first, then read below if you want more context.
Calculator
Try Lean Body Mass Calculator
Enter your details to get an estimate, then read the notes below for context.
Fast estimate Clear result notes No sign-up needed
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Enter your details
Most people finish this in under a minute.
Result
Quick interpretationWaiting for input
Enter your details and click calculate.
This panel shows the main result first, followed by any extra details that matter.
Primary signal
Your main number or category will appear here after calculation.
What to look at next
Check the range, category, or comparison details instead of relying on one number alone.
Estimate scale
EstimateFocused view
Some calculators also show a visual summary here after calculation.
Step 1
Start with the main number, then check the range or category around it.
Step 2
Use the sections below if you want formulas, ranges, or related tools.
Notes to keep in mind
Guide
What is Lean Body Mass?
Performance and body metrics
Lean body mass is your total body weight minus fat mass. It includes muscle, bone, water, connective tissue, and organs.
Knowing your lean mass can make calorie and protein planning more individualized.
Guide
Lean Body Mass Formula
Performance and body metrics
The formula is simple: lean body mass equals body weight multiplied by one minus body fat percentage expressed as a decimal.
Guide
How to Use Lean Body Mass
Performance and body metrics
Lean body mass is often used to estimate protein needs, compare body-composition changes, or set realistic physique goals over time.
Common questions
Answers to common follow-up questions about lean body mass calculator.
Is lean body mass the same as muscle mass?
No. Lean body mass includes muscle, but it also includes water, bone, organs, and other non-fat tissue.