Body Type Calculator
Adjust the inputs below. Results update as you type.
How it works
Body type is determined by ratios: waist-to-hip ratio (WHR) above 0.85 (women) or 0.90 (men) is associated with higher cardiovascular risk. Waist-to-height ratio below 0.5 is a common health benchmark. These categories are observational tools for fitness and fashion guidance—not medical diagnoses. Body composition and distribution change with age and lifestyle.
Input guidance
- Use measured values (recent weight, height, activity level) rather than guesses.
- Recalculate every few weeks as your routine and body metrics change.
- Pair screening metrics with context such as sleep, stress, and medical history.
The formula
Body type (somatotype) is classified qualitatively as ectomorph (lean, hard to gain), mesomorph (muscular, gains easily), or endomorph (rounder, stores fat easily), often as a blend.
Worked example
Someone who builds muscle readily and stays relatively lean leans mesomorph, while a naturally slim person who struggles to gain leans ectomorph.
More examples to test
- Maintenance case: keep activity constant and observe expected baseline ranges.
- Adjustment case: change only one major variable to understand sensitivity.
How to interpret results
Use results for awareness and planning, then validate with qualified medical or nutrition professionals for individualized decisions.
When this can be inaccurate
Population formulas cannot account for all biological factors such as medical conditions, medication effects, body composition differences, and genetics.
Change history
- July 2026: Quality-reviewed for publication with formula checks and explanatory copy updates.
Site-wide corrections also appear on the corrections log.
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Frequently asked questions
What are the three body types?+
Ectomorph (slim, fast metabolism), mesomorph (athletic, builds muscle easily), and endomorph (larger frame, stores fat more readily). Most people are a mix.
Can I change my body type?+
Your underlying frame is genetic, but training and nutrition strongly shape your physique regardless of your dominant somatotype.
Should training differ by body type?+
Somewhat. Endomorphs may emphasize conditioning and diet; ectomorphs may focus on calorie surplus and strength — but fundamentals apply to all.
Can this calculator diagnose a condition?+
No. It is a screening and education tool only, not a clinical diagnosis.
When should I seek professional advice?+
Seek professional advice when results are extreme, persistent, or conflict with symptoms, goals, or prior medical guidance.