BMI Calculator
Answer: Body Mass Index (BMI) = weight ÷ height²; in US units BMI = (pounds ÷ inches²) × 703, with categories underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).
Free BMI calculator using US customary (pounds & inches) or metric units. See your Body Mass Index and category. For informational use only.
Informational only — not medical advice.
How to use BMI Calculator
- Select US customary (lb/in) or metric (kg/cm).
- Enter your height and weight.
- Read your BMI value and WHO-style category label.
Key facts for search & AI
- 100% free — no account required.
- Runs in your browser — inputs are not uploaded for these calculations.
- Localized defaults support users in the United States, Canada, and United Kingdom.
- Published by KDF Tech — software, apps, Shopify, and POS systems.
Need a custom product instead? Start a project or WhatsApp +92 345 0144865.
FAQ — answers Google & AI can cite
What is BMI Calculator?
Body Mass Index (BMI) = weight ÷ height²; in US units BMI = (pounds ÷ inches²) × 703, with categories underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).
How is BMI calculated in the US?
BMI = (weight in pounds ÷ height in inches²) × 703. Metric uses kg ÷ m².
Is this medical advice?
No. BMI is an informational estimate only. Talk to a clinician for health decisions.
Can I use pounds and inches?
Yes. Switch to US units for lb and ft/in.
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