BMI0
Category-
General ideal weight range-
Health & Fitness
BMI Calculator + Ideal Weight
Calculate BMI category and a general ideal weight range using height and weight. Free, fast, and built for a clean browser workflow.
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About this tool
Body Mass Index (BMI) is a quick height-and-weight screening number used in many public-health charts. This calculator shows your BMI value, a general category label, and a broad ideal weight band.
BMI does not measure body fat, muscle, or medical risk on its own. Athletes and people with higher muscle mass may show a higher BMI without the same health implications as someone with less muscle.
All inputs stay in your browser. Use the result as a conversation starter with a qualified clinician — not as a diagnosis or treatment plan.
Tips for better results
- Measure height without shoes and weight at a consistent time of day for repeatable tracking.
- Standard adult BMI bands are commonly grouped as underweight, normal, overweight, and obese — labels vary slightly by guideline.
- Children, teens, pregnancy, and some medical conditions need specialized charts; do not rely on adult BMI alone.
- If BMI and how you feel diverge, ask a doctor about waist circumference, bloodwork, or body-composition options.
How to use
- 1 Enter height in centimeters.
- 2 Enter weight in kilograms.
- 3 Review BMI score, category, and ideal weight range.
Interpretation
What BMI can and cannot tell you
BMI is a screening ratio from height and weight. It is useful for population-level categories and quick self-checks, but it is not a full health assessment.
Categories are general
Standard adult bands (underweight, normal, overweight, obesity) are starting points. Athletes with high muscle mass may land higher without the same risk profile.
Ideal weight ranges
Range outputs are rough guides from height-based formulas, not personalized prescriptions.
Pair with habits
Use BMI beside waist trends, activity, and clinical advice—not as a sole decision tool.
Privacy
Height and weight stay in your browser for this calculator. Nothing is uploaded to ShishwaLab servers.
FAQ
Is BMI a medical diagnosis?
No. BMI is a general screening metric, not a diagnosis or prescription.
Who should use BMI cautiously?
Athletes, children, pregnant people, and older adults often need more specific guidance than adult BMI charts.
Is my health data saved?
No. Height and weight are calculated locally and are not stored by ShishwaLab.
What units does the tool use?
Height in centimeters and weight in kilograms on this page.
What is ideal weight here?
A general range derived from common BMI targets for the height you enter — not a personalized medical goal.
Why does my result differ from another site?
Rounding rules and category cutoffs can differ slightly between calculators and health organizations.