{
  "entity_type": "unit_conversion_page",
  "id": "hp-to-ps",
  "name": "Horsepower (mechanical) to Metric horsepower (PS)",
  "title": "Horsepower (mechanical) to Metric horsepower (PS) Converter (hp to PS)",
  "description": "Convert horsepower (mechanical) to metric horsepower (PS): 1 hp = 1.01387 PS. 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": "hp_metric",
    "display": "PS",
    "name": "metric horsepower (PS)",
    "singular": "metric horsepower"
  },
  "linear": true,
  "factor": 1.013869665,
  "inverse_factor": 0.9863200706,
  "formula": "metric horsepower (PS) = horsepower (mechanical) × 1.013869665",
  "reverse_formula": "horsepower (mechanical) = metric horsepower (PS) × 0.9863200706",
  "unit_relation": "1 hp = 1.01387 PS",
  "examples": [
    {
      "value": 5,
      "result": 5.06935,
      "text": "5 hp = 5.06935 PS"
    },
    {
      "value": 12.5,
      "result": 12.6734,
      "text": "12.5 hp = 12.6734 PS"
    },
    {
      "value": 100,
      "result": 101.387,
      "text": "100 hp = 101.387 PS"
    }
  ],
  "table": [
    {
      "hp": 1,
      "hp_metric": 1.01387
    },
    {
      "hp": 2,
      "hp_metric": 2.02774
    },
    {
      "hp": 3,
      "hp_metric": 3.04161
    },
    {
      "hp": 4,
      "hp_metric": 4.05548
    },
    {
      "hp": 5,
      "hp_metric": 5.06935
    },
    {
      "hp": 6,
      "hp_metric": 6.08322
    },
    {
      "hp": 7,
      "hp_metric": 7.09709
    },
    {
      "hp": 8,
      "hp_metric": 8.11096
    },
    {
      "hp": 9,
      "hp_metric": 9.12483
    },
    {
      "hp": 10,
      "hp_metric": 10.1387
    },
    {
      "hp": 15,
      "hp_metric": 15.208
    },
    {
      "hp": 20,
      "hp_metric": 20.2774
    },
    {
      "hp": 25,
      "hp_metric": 25.3467
    },
    {
      "hp": 30,
      "hp_metric": 30.4161
    },
    {
      "hp": 40,
      "hp_metric": 40.5548
    },
    {
      "hp": 50,
      "hp_metric": 50.6935
    },
    {
      "hp": 75,
      "hp_metric": 76.0402
    },
    {
      "hp": 100,
      "hp_metric": 101.387
    },
    {
      "hp": 200,
      "hp_metric": 202.774
    },
    {
      "hp": 250,
      "hp_metric": 253.467
    },
    {
      "hp": 500,
      "hp_metric": 506.935
    },
    {
      "hp": 1000,
      "hp_metric": 1013.87
    }
  ],
  "faq": [
    {
      "q": "How many metric horsepower (PS) are in one horsepower?",
      "a": "1 hp = 1.01387 PS. 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 metric horsepower (PS)?",
      "a": "Multiply the value in horsepower (mechanical) by 1.013869665: metric horsepower (PS) = horsepower (mechanical) × 1.013869665. For example, 5 hp = 5.06935 PS."
    },
    {
      "q": "How do I convert metric horsepower (PS) back to horsepower (mechanical)?",
      "a": "Multiply by the inverse factor 0.9863200706 (horsepower (mechanical) = metric horsepower (PS) × 0.9863200706), or use the metric horsepower (PS)-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=hp_metric",
    "calculator": "https://tttkmbb.com/api/v1/calculate/power?value=5&from_unit=hp&to_unit=hp_metric",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "hp",
      "to_unit": "hp_metric"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/hp-to-ps",
    "markdown": "https://tttkmbb.com/conversion/hp-to-ps.md",
    "json": "https://tttkmbb.com/conversion/hp-to-ps.json",
    "reverse": "https://tttkmbb.com/conversion/ps-to-hp",
    "quantity_converter": "https://tttkmbb.com/conversion/power",
    "units": "https://tttkmbb.com/api/v1/units?quantity=power"
  },
  "timestamp": "2026-09-24"
}