BMI Calculator
Calculate your Body Mass Index (BMI) from height and weight. Shows WHO and Asia‑Pacific reference ranges.
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Health Basics Calculators
BMI calculator and basic health reference tools.
A narrow category focused on screening-style metrics (e.g. BMI) that are easy to compute but easy to misinterpret. BMI does not measure body composition; muscular individuals may fall outside “normal” bands without excess adiposity. Regional screening cutoffs differ; read the notes on the calculator. Never use a single index to diagnose or treat — pair results with clinical context and professional guidance when anything health-related is at stake.
This topic area is intentionally narrow. Use related categories and guides for broader workflows that combine multiple steps.
ℹ️For information only. Verify local laws and tax rules before relying on results.
Last updated: 2026-04-04
⭐ Featured Tools
Common Use Cases
- ✓Calculate BMI from height and weight
- ✓Check healthy weight ranges
- ✓Convert between metric and imperial measurements
All Health Basics Calculators (1)
How to choose the right tool
Each tool below has a different purpose, assumptions, and common pitfalls. Read the framing first — the same numbers can mean very different things depending on the formula.
Related Guides
Frequently Asked Questions
What is BMI and how is it calculated?
BMI (Body Mass Index) is weight in kilograms divided by height in meters squared. It provides a quick screening metric for weight categories: underweight, normal, overweight, and obese.
Is BMI accurate for everyone?
BMI is a useful screening tool but does not account for muscle mass, bone density, or body composition. Athletes or very muscular people may have a high BMI without excess fat.
Should I make health decisions based on BMI alone?
No. BMI is a reference metric, not a diagnosis. Always consult a healthcare professional for personalized medical advice.
Are BMI thresholds the same worldwide?
No. Some regions (e.g., Asia-Pacific) use different cutoffs due to higher metabolic risk at lower BMI. Always interpret in regional context.
What complementary measures can I use besides BMI?
Waist circumference, body fat percentage, DEXA scans, blood pressure and metabolic markers give a more complete health picture. For adults, waist-to-height ratio is increasingly used alongside BMI because it captures central adiposity that BMI alone misses.
Does BMI apply to children, athletes, or pregnant women?
No. Children use age- and sex-adjusted BMI percentile charts rather than the adult cutoffs shown here. Athletes with high muscle mass routinely fall in the "overweight" band without excess fat. BMI is not validated for use during pregnancy. In all three cases, treat the number as not applicable and consult a clinician for the appropriate metric.