{
  "slug": "bmi",
  "title": "⚕️ BMI Calculator",
  "description": "Calculate your Body Mass Index (BMI) with accurate WHO classification. BMI is a simple screening tool for weight categories that may lead to health problems.",
  "category": "health-and-fitness",
  "categoryName": "Health & Fitness",
  "url": "https://www.themostusefulsiteintheworld.com/tool/bmi.html",
  "embedUrl": "https://www.themostusefulsiteintheworld.com/tool.html?card=bmi&embed=1",
  "standaloneUrl": "https://www.themostusefulsiteintheworld.com/tools/bmi.html",
  "inputs": [
    {
      "name": "bmi-height",
      "type": "range",
      "label": "Height",
      "unit": "",
      "min": 100,
      "max": 250,
      "step": 0.1,
      "default": "175"
    },
    {
      "name": "bmi-height-input",
      "type": "number",
      "label": "Height in centimetres",
      "unit": "",
      "min": 100,
      "max": 250,
      "step": 0.1,
      "default": "175"
    },
    {
      "name": "bmi-weight",
      "type": "range",
      "label": "Weight",
      "unit": "",
      "min": 30,
      "max": 200,
      "step": 0.1,
      "default": "70"
    },
    {
      "name": "bmi-weight-input",
      "type": "number",
      "label": "Weight in kilograms",
      "unit": "",
      "min": 30,
      "max": 200,
      "step": 0.1,
      "default": "70"
    },
    {
      "name": "bmi-age",
      "type": "number",
      "label": "Age",
      "unit": "",
      "min": 18,
      "max": 100
    }
  ],
  "outputs": [
    {
      "name": "bmi-height-display",
      "type": "output"
    },
    {
      "name": "bmi-weight-display",
      "type": "output"
    },
    {
      "name": "bmi-value",
      "type": "output"
    }
  ],
  "prefill": {
    "urlTemplate": "https://www.themostusefulsiteintheworld.com/tool.html?card=bmi&<id>=<value>",
    "runs": true,
    "example": "https://www.themostusefulsiteintheworld.com/tool.html?card=bmi&bmi-height=175&bmi-height-input=175&bmi-weight=70&bmi-weight-input=70&run=1"
  },
  "formula": "BMI = weight(kg) ÷ height(m)² — WHO classification: <18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, ≥30 obese.",
  "sources": [],
  "tags": [
    "bmi",
    "health",
    "fitness",
    "calculate",
    "body",
    "mass",
    "index",
    "accurate",
    "who",
    "classification"
  ],
  "popularity": 9950,
  "featured": true,
  "updated": "2026-09-19",
  "version": "2026-09-19"
}