{
  "entity_type": "unit_conversion_page",
  "id": "mmhg-to-kpa",
  "name": "Millimeters of mercury to Kilopascals",
  "title": "Millimeters of mercury to Kilopascals Converter (mmHg to kPa)",
  "description": "Convert millimeters of mercury to kilopascals: 1 mmHg = 0.133322 kPa. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "pressure",
  "quantity_name": "Pressure",
  "base_unit": "Pa",
  "from_unit": {
    "symbol": "mmHg",
    "display": "mmHg",
    "name": "millimeters of mercury",
    "singular": "millimeter of mercury"
  },
  "to_unit": {
    "symbol": "kPa",
    "display": "kPa",
    "name": "kilopascals",
    "singular": "kilopascal"
  },
  "linear": true,
  "factor": 0.1333223874,
  "inverse_factor": 7.500615758,
  "formula": "kilopascals = millimeters of mercury × 0.1333223874",
  "reverse_formula": "millimeters of mercury = kilopascals × 7.500615758",
  "unit_relation": "1 mmHg = 0.133322 kPa",
  "examples": [
    {
      "value": 5,
      "result": 0.666612,
      "text": "5 mmHg = 0.666612 kPa"
    },
    {
      "value": 12.5,
      "result": 1.66653,
      "text": "12.5 mmHg = 1.66653 kPa"
    },
    {
      "value": 100,
      "result": 13.3322,
      "text": "100 mmHg = 13.3322 kPa"
    }
  ],
  "table": [
    {
      "mmHg": 1,
      "kPa": 0.133322
    },
    {
      "mmHg": 2,
      "kPa": 0.266645
    },
    {
      "mmHg": 3,
      "kPa": 0.399967
    },
    {
      "mmHg": 4,
      "kPa": 0.53329
    },
    {
      "mmHg": 5,
      "kPa": 0.666612
    },
    {
      "mmHg": 6,
      "kPa": 0.799934
    },
    {
      "mmHg": 7,
      "kPa": 0.933257
    },
    {
      "mmHg": 8,
      "kPa": 1.06658
    },
    {
      "mmHg": 9,
      "kPa": 1.1999
    },
    {
      "mmHg": 10,
      "kPa": 1.33322
    },
    {
      "mmHg": 15,
      "kPa": 1.99984
    },
    {
      "mmHg": 20,
      "kPa": 2.66645
    },
    {
      "mmHg": 25,
      "kPa": 3.33306
    },
    {
      "mmHg": 30,
      "kPa": 3.99967
    },
    {
      "mmHg": 40,
      "kPa": 5.3329
    },
    {
      "mmHg": 50,
      "kPa": 6.66612
    },
    {
      "mmHg": 75,
      "kPa": 9.99918
    },
    {
      "mmHg": 100,
      "kPa": 13.3322
    },
    {
      "mmHg": 200,
      "kPa": 26.6645
    },
    {
      "mmHg": 250,
      "kPa": 33.3306
    },
    {
      "mmHg": 500,
      "kPa": 66.6612
    },
    {
      "mmHg": 1000,
      "kPa": 133.322
    }
  ],
  "faq": [
    {
      "q": "How many kilopascals are in one millimeter of mercury?",
      "a": "1 mmHg = 0.133322 kPa. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures."
    },
    {
      "q": "What is the formula to convert millimeters of mercury to kilopascals?",
      "a": "Multiply the value in millimeters of mercury by 0.1333223874: kilopascals = millimeters of mercury × 0.1333223874. For example, 5 mmHg = 0.666612 kPa."
    },
    {
      "q": "How do I convert kilopascals back to millimeters of mercury?",
      "a": "Multiply by the inverse factor 7.500615758 (millimeters of mercury = kilopascals × 7.500615758), or use the kilopascals-to-millimeters of mercury page."
    }
  ],
  "sources": [
    {
      "name": "NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors",
      "url": "https://www.nist.gov/pml/special-publication-811",
      "type": "standard",
      "retrieved_at": "2026-09-24"
    },
    {
      "name": "BIPM – The International System of Units (SI Brochure, 9th edition)",
      "url": "https://www.bipm.org/en/publications/si-brochure",
      "type": "standard",
      "retrieved_at": "2026-09-24"
    },
    {
      "name": "Wikipedia – Conversion of units",
      "url": "https://en.wikipedia.org/wiki/Conversion_of_units",
      "type": "reference",
      "retrieved_at": "2026-09-24"
    }
  ],
  "freshness": {
    "type": "static",
    "max_age_seconds": null,
    "note": "Fixed conversion factors (NIST/BIPM definitions); results never go stale."
  },
  "api": {
    "convert": "https://tttkmbb.com/api/v1/convert?value=5&from_unit=mmHg&to_unit=kPa",
    "calculator": "https://tttkmbb.com/api/v1/calculate/pressure?value=5&from_unit=mmHg&to_unit=kPa",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "mmHg",
      "to_unit": "kPa"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/mmhg-to-kpa",
    "markdown": "https://tttkmbb.com/conversion/mmhg-to-kpa.md",
    "json": "https://tttkmbb.com/conversion/mmhg-to-kpa.json",
    "reverse": "https://tttkmbb.com/conversion/kpa-to-mmhg",
    "quantity_converter": "https://tttkmbb.com/conversion/pressure",
    "units": "https://tttkmbb.com/api/v1/units?quantity=pressure"
  },
  "timestamp": "2026-09-24"
}