{
  "entity_type": "unit_conversion_page",
  "id": "hp-to-kw",
  "name": "Horsepower (mechanical) to Kilowatts",
  "title": "Horsepower (mechanical) to Kilowatts Converter (hp to kW)",
  "description": "Convert horsepower (mechanical) to kilowatts: 1 hp = 0.7457 kW. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "power",
  "quantity_name": "Power",
  "base_unit": "W",
  "from_unit": {
    "symbol": "hp",
    "display": "hp",
    "name": "horsepower (mechanical)",
    "singular": "horsepower"
  },
  "to_unit": {
    "symbol": "kW",
    "display": "kW",
    "name": "kilowatts",
    "singular": "kilowatt"
  },
  "linear": true,
  "factor": 0.7456998716,
  "inverse_factor": 1.34102209,
  "formula": "kilowatts = horsepower (mechanical) × 0.7456998716",
  "reverse_formula": "horsepower (mechanical) = kilowatts × 1.34102209",
  "unit_relation": "1 hp = 0.7457 kW",
  "examples": [
    {
      "value": 5,
      "result": 3.7285,
      "text": "5 hp = 3.7285 kW"
    },
    {
      "value": 12.5,
      "result": 9.32125,
      "text": "12.5 hp = 9.32125 kW"
    },
    {
      "value": 100,
      "result": 74.57,
      "text": "100 hp = 74.57 kW"
    }
  ],
  "table": [
    {
      "hp": 1,
      "kW": 0.7457
    },
    {
      "hp": 2,
      "kW": 1.4914
    },
    {
      "hp": 3,
      "kW": 2.2371
    },
    {
      "hp": 4,
      "kW": 2.9828
    },
    {
      "hp": 5,
      "kW": 3.7285
    },
    {
      "hp": 6,
      "kW": 4.4742
    },
    {
      "hp": 7,
      "kW": 5.2199
    },
    {
      "hp": 8,
      "kW": 5.9656
    },
    {
      "hp": 9,
      "kW": 6.7113
    },
    {
      "hp": 10,
      "kW": 7.457
    },
    {
      "hp": 15,
      "kW": 11.1855
    },
    {
      "hp": 20,
      "kW": 14.914
    },
    {
      "hp": 25,
      "kW": 18.6425
    },
    {
      "hp": 30,
      "kW": 22.371
    },
    {
      "hp": 40,
      "kW": 29.828
    },
    {
      "hp": 50,
      "kW": 37.285
    },
    {
      "hp": 75,
      "kW": 55.9275
    },
    {
      "hp": 100,
      "kW": 74.57
    },
    {
      "hp": 200,
      "kW": 149.14
    },
    {
      "hp": 250,
      "kW": 186.425
    },
    {
      "hp": 500,
      "kW": 372.85
    },
    {
      "hp": 1000,
      "kW": 745.7
    }
  ],
  "faq": [
    {
      "q": "How many kilowatts are in one horsepower?",
      "a": "1 hp = 0.7457 kW. 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 horsepower (mechanical) to kilowatts?",
      "a": "Multiply the value in horsepower (mechanical) by 0.7456998716: kilowatts = horsepower (mechanical) × 0.7456998716. For example, 5 hp = 3.7285 kW."
    },
    {
      "q": "How do I convert kilowatts back to horsepower (mechanical)?",
      "a": "Multiply by the inverse factor 1.34102209 (horsepower (mechanical) = kilowatts × 1.34102209), or use the kilowatts-to-horsepower (mechanical) 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=hp&to_unit=kW",
    "calculator": "https://tttkmbb.com/api/v1/calculate/power?value=5&from_unit=hp&to_unit=kW",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "hp",
      "to_unit": "kW"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/hp-to-kw",
    "markdown": "https://tttkmbb.com/conversion/hp-to-kw.md",
    "json": "https://tttkmbb.com/conversion/hp-to-kw.json",
    "reverse": "https://tttkmbb.com/conversion/kw-to-hp",
    "quantity_converter": "https://tttkmbb.com/conversion/power",
    "units": "https://tttkmbb.com/api/v1/units?quantity=power"
  },
  "timestamp": "2026-09-24"
}