39+ Countries Available

Free BMI Calculator by Country 2025

Find your country-specific BMI calculator with regional standards, healthcare guidelines, and preferred units. Each calculator is tailored to your country's health standards and measurement system.

Showing 39 of 39 countries

Americas

6 countries

Europe

14 countries

Asia-Pacific

12 countries

Middle East & Africa

7 countries

Why Use Country-Specific BMI Calculators?

Regional BMI Standards Matter

Different countries and regions use different BMI standards and measurement systems. Our country-specific BMI calculators ensure you get accurate, medically relevant results based on your location's health guidelines.

Asian BMI Standards: Countries like South Korea, Japan, China, India, and Singapore use lower BMI thresholds because Asian populations have higher health risks at lower BMI levels. Asian standards classify overweight as BMI 23-27.4 and obesity as BMI ≥27.5, compared to WHO standards (overweight: 25-29.9, obese: ≥30).

CDC Standards (United States): The CDC provides detailed obesity classifications including Class 1 (30-34.9), Class 2 (35-39.9), and Class 3 (≥40) obesity categories for comprehensive health assessment.

WHO Standards: Most countries worldwide follow WHO (World Health Organization) BMI guidelines, which classify normal weight as 18.5-24.9, overweight as 25-29.9, and obese as ≥30.

Measurement Systems & Units

Each country-specific BMI calculator defaults to the measurement system commonly used in that region. This ensures familiarity and reduces conversion errors.

  • Metric Units (kg, cm): Used in most countries including Canada, Australia, most of Europe, Asia, and Africa. The formula is: BMI = weight (kg) / height (m)²
  • Imperial Units (lbs, ft/in): Primarily used in the United States. The formula is: BMI = (weight in pounds × 703) / (height in inches)²

Healthcare System Alignment

Many countries have specific healthcare systems with their own BMI guidelines and classifications. Our calculators align with these systems to ensure consistency with medical professionals.

  • NHS (UK): Uses WHO standards with specific guidance for different populations
  • CDC (USA): Provides detailed obesity classifications for clinical use
  • Asian Healthcare Systems: Use modified BMI thresholds based on population-specific health risk data

100% Free

No hidden costs, no registration required. Use as many times as you need.

Privacy Protected

All calculations are performed locally. We don't store any personal data.

Instant Results

Get accurate BMI calculations in seconds with detailed health category information.

How to Use Our Country-Specific BMI Calculators

Step 1: Find Your Country

Use the search and filter tools above to find your country's BMI calculator. You can search by country name, filter by region (Americas, Europe, Asia-Pacific, Middle East & Africa), BMI standard (WHO, Asian, CDC), or preferred units (Metric, Imperial).

Step 2: Enter Your Measurements

Once you're on your country's calculator page, enter your height and weight using the default units for that country. You can switch between metric and imperial units if needed. The calculator will automatically convert and recalculate.

Step 3: Review Your Results

Your BMI result will be displayed along with your health category based on your country's specific standards. You'll also see information about what your BMI means, health recommendations, and how it compares to standard ranges.

Step 4: Consult Healthcare Providers

While BMI is a useful screening tool, it's important to discuss your results with a healthcare provider, especially if you have concerns about your weight or health. BMI doesn't account for muscle mass, bone density, or body composition, so professional medical advice is always recommended.

Frequently Asked Questions

Common questions about country-specific BMI calculators