Best-fit input
height, weight, and measurement units. If your goal is a clear, copyable, and easy-to-review result, this page is usually faster than opening a heavier workflow.
BMI Calculator
Calculate your Body Mass Index
Height（cm）
Weight（kg）
BMI Reference
| BMI Range | WHO Category | Asian Category |
|---|---|---|
| < 18.5 | Underweight | Underweight |
| 18.5 ~ 24.9 | Normal | Normal (18.5~23.9) |
| 25 ~ 29.9 | Overweight | Overweight (24~27.9) |
| ≥ 30 | Obese | Obese (≥28) |
📖 How to Use BMI Calculator
1. InputHeight：Fill in yourHeightValue，Unitforcm(cm)，as175cm。
2. InputWeight：Fill in yourWeightValue，Unitforthousandg(kg)，as70kg。
3. Auto Calculate:InputaftersystemsystemAutoCalculateBMI Value，andDisplayHealthstatusstateAssessment。
4. IdealWeightRange：systemsystemrootaccordingHeightCalculateIdealWeightRange，Help you understandHealthWeightitemstandard。
❓ FAQ
Q：What is BMI?
A：BMI (Body Mass Index)，isuseWeightpubliccattynumberdividewithHeightmnumbersquaregetoutput Value，useinAssessmentWeightiswhetherHealth。
Q：What are BMI standards?
A：WHO and Asian standards differ slightly，Asian standard is more suitable for Asian population，with lower thresholds for overweight and obesity.
Q：Does BMI fully reflect health status?
A：BMI is only a reference indicator，It cannot reflect body fat distribution, muscle mass, etc.Athletes or muscular individuals may have high BMI but be healthy.
Q：ashowchangeimproveBMI Value？
A：canthroughpasstogethermanagedrinkdietandruleregulartransportmoveadjustsectionWeight，Consult a doctor or nutritionist for a personalized health plan.
💡 BMI & Health Tips
BMI was developed by Belgian statistician Adolphe Quetelet in the 19th century，Originally for population statistics, now widely used for health assessment.
Studies show people with BMI in normal range (18.5-24)，have lower risk of cardiovascular disease, diabetes, etc.
Asian standard defines BMI≥24 as overweight, ≥28 as obese，stricter than WHO (≥25 overweight, ≥30 obese), more suitable for Asians.
Besides BMI, consider body fat percentage, waist circumference for comprehensive assessment.Waist circumference ≥85cm (male) or ≥80cm (female) may indicate abdominal obesity.
About BMI Calculator
Use cases, workflow tips, result limits, and common questions
BMI Calculator helps you estimate body mass index from height and weight for a quick wellness reference. It is designed for lightweight, reviewable browser-based work where you need a result quickly without installing another app.
Use it as a temporary workspace: paste or enter the content, confirm the options, review the result, and then copy it into the next step. Utility tools are good first-pass references. Health, document, holiday, and location-related results should be confirmed against official or professional guidance.
For more context on this category, read the Life & Utility guide. It explains when to choose related tools, what mistakes to avoid, and where manual review still matters.
How to read the output
BMI value and general reference category. Compare the output with your original content, especially when the result will be used in a formal, shared, or production context.
Privacy and limits
Most processing happens in the browser. Avoid entering passwords, private keys, identity numbers, financial records, or unsanitized production data into any online tool.
Should I use BMI Calculator as long-term storage?
No. This page is for immediate processing and quick assistance. Keep your own copy of any source content or final result that needs to be stored.
Can I rely on the result directly?
BMI is not a medical diagnosis and can be affected by muscle mass, age, pregnancy, and health conditions. For business, finance, compliance, health, identity, or production use, review the result against official requirements or professional guidance.
Why does this page include explanatory content?
A useful tool page should do more than provide fields and buttons. We include use cases, limits, and related guides so users can decide when the tool is appropriate and when the output needs review.