About BMI-Calculator.blog

Our mission

BMI is widely used and widely misunderstood. Most online calculators spit out a single number with no context. We believe people deserve:

• Multi-index analysis, not a single-number verdict
• Country-aware cutoffs (Asian populations have different thresholds)
• Honest limitations — when BMI doesn't apply, we say so
• Privacy by default — calculations stay in your browser

Why a multi-index approach

BMI is a screening tool from 1832. It cannot distinguish muscle from fat or account for body shape. Combining BMI with Waist-to-Height Ratio, FFMI, age-adjusted BMI and BAI gives a much more honest picture. When indicators disagree, we surface that contradiction directly.

Methodology

Every formula is implemented from a published source. WHO/NHS/CDC general adult cutoffs and WHO Asian-Pacific cutoffs are used as published. WHtR thresholds follow Ashwell & Hsieh (2005). FFMI uses Kouri et al. (1995) with the standard 1.80 m height adjustment. Age-adjusted BMI is a simplified application of Heo et al. (2012). BAI follows Bergman et al. (2011).

Full reference list: /sources.

Editorial process

This calculator is built and maintained by an independent developer using peer-reviewed sources. We have no medical credentials. The tool is reviewed against current published guidelines at least annually.

Disclosures

• Not medical advice. See our medical disclaimer.
• Funding: self-funded. No ads, no affiliate links, no data sales.
• Conflicts of interest: none disclosed.
• Operator details: see the imprint.