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Age affects body fat calculations
Height is used for BMI and WHtR calculations
Weight is used for BMI and body fat calculations
Waist size is used for WHtR, WHR, and visceral fat calculations
Hip size is used for waist-to-hip ratio (WHR)

Your Bio-Data

Name
Email

Your BMI Result

Underweight
Normal
Overweight
Obesity
15 18.5 25 30 40

BMI Categories

Underweight: < 18.5 Normal weight: 18.5 - 24.9 Overweight: 25 - 29.9 Obesity: ≥ 30

Advanced Health Metrics

Your Body Fat Percentage

-
5%(Minimum) - - For Male - - (Maximum)55%
10%(minimum) - - For Female - - (Maximum)60%

Body Fat Categories

Essential (Male ~3–5%) (Female ~10–13%) Athletic (Male ~6–13%) (Female ~14–20%) Fitness (Male ~14–17%) (Female ~21–24%) Average (Male ~18–24%) (Female ~25–31%) Overweight (Male ~25–29%) (Female ~32–36%) Obese (Male 30%+) (Female 37%+)

Waist-to-Height Ratio

-
0.3 0.5 0.7

Visceral Fat Risk

-
Low Moderate High
× Measurement Guide
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FAQs related to online health calculators

Are Royal Calc health calculators really free to use? ▼

Yes, completely free! All health calculators on Royal Calc are 100% free with no hidden charges, subscriptions, or paywalls. This includes our BMI calculator, body fat calculator, and calorie calculator. We believe health awareness should be accessible to everyone. Our tools are funded through minimal, non-intrusive advertising and affiliate partnerships — but your health data is never sold or shared.

Is my personal health data safe on Royal Calc? ▼

Your privacy is our top priority. Royal Calc does not store, track, or share any personal data you enter into our health calculators. We don't use invasive tracking cookies. The only data we collect is anonymous usage statistics to help us improve our tools. You can use our BMI calculator, body fat calculator, and calorie calculator with complete peace of mind.

Can these health calculators diagnose a medical condition? ▼

No. These tools are for informational and educational purposes only. They provide estimates based on standard formulas and cannot diagnose any medical condition. Always consult a qualified healthcare professional for medical advice.

My result looks abnormal — what should I do? ▼

If you receive a result that concerns you, please consult a qualified healthcare professional for a proper evaluation and personalized advice. Our BMI calculator, body fat calculator, and calorie calculator are meant to support — not replace — professional medical guidance.

Are health calculators available in other languages? ▼

Yes! Royal Calc's health calculators are fully multilingual. You can switch between languages instantly using the language switcher at the top of the page. All calculators, guides, and content are available in many languages to serve our diverse global audience.

How many health calculators are listed on this page? ▼

Royal Calc lists these health calculators: