{
  "entity_type": "unit_conversion_page",
  "id": "knots-to-mph",
  "name": "Knots to Miles per hour",
  "title": "Knots to Miles per hour Converter (kn to mph)",
  "description": "Convert knots to miles per hour: 1 kn = 1.15078 mph. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "speed",
  "quantity_name": "Speed",
  "base_unit": "m/s",
  "from_unit": {
    "symbol": "kn",
    "display": "kn",
    "name": "knots",
    "singular": "knot"
  },
  "to_unit": {
    "symbol": "mph",
    "display": "mph",
    "name": "miles per hour",
    "singular": "mile per hour"
  },
  "linear": true,
  "factor": 1.150779448,
  "inverse_factor": 0.8689762419,
  "formula": "miles per hour = knots × 1.150779448",
  "reverse_formula": "knots = miles per hour × 0.8689762419",
  "unit_relation": "1 kn = 1.15078 mph",
  "examples": [
    {
      "value": 5,
      "result": 5.7539,
      "text": "5 kn = 5.7539 mph"
    },
    {
      "value": 12.5,
      "result": 14.3847,
      "text": "12.5 kn = 14.3847 mph"
    },
    {
      "value": 100,
      "result": 115.078,
      "text": "100 kn = 115.078 mph"
    }
  ],
  "table": [
    {
      "kn": 1,
      "mph": 1.15078
    },
    {
      "kn": 2,
      "mph": 2.30156
    },
    {
      "kn": 3,
      "mph": 3.45234
    },
    {
      "kn": 4,
      "mph": 4.60312
    },
    {
      "kn": 5,
      "mph": 5.7539
    },
    {
      "kn": 6,
      "mph": 6.90468
    },
    {
      "kn": 7,
      "mph": 8.05546
    },
    {
      "kn": 8,
      "mph": 9.20624
    },
    {
      "kn": 9,
      "mph": 10.357
    },
    {
      "kn": 10,
      "mph": 11.5078
    },
    {
      "kn": 15,
      "mph": 17.2617
    },
    {
      "kn": 20,
      "mph": 23.0156
    },
    {
      "kn": 25,
      "mph": 28.7695
    },
    {
      "kn": 30,
      "mph": 34.5234
    },
    {
      "kn": 40,
      "mph": 46.0312
    },
    {
      "kn": 50,
      "mph": 57.539
    },
    {
      "kn": 75,
      "mph": 86.3085
    },
    {
      "kn": 100,
      "mph": 115.078
    },
    {
      "kn": 200,
      "mph": 230.156
    },
    {
      "kn": 250,
      "mph": 287.695
    },
    {
      "kn": 500,
      "mph": 575.39
    },
    {
      "kn": 1000,
      "mph": 1150.78
    }
  ],
  "faq": [
    {
      "q": "How many miles per hour are in one knot?",
      "a": "1 kn = 1.15078 mph. 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 knots to miles per hour?",
      "a": "Multiply the value in knots by 1.150779448: miles per hour = knots × 1.150779448. For example, 5 kn = 5.7539 mph."
    },
    {
      "q": "How do I convert miles per hour back to knots?",
      "a": "Multiply by the inverse factor 0.8689762419 (knots = miles per hour × 0.8689762419), or use the miles per hour-to-knots 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=kn&to_unit=mph",
    "calculator": "https://tttkmbb.com/api/v1/calculate/speed?value=5&from_unit=kn&to_unit=mph",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "kn",
      "to_unit": "mph"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/knots-to-mph",
    "markdown": "https://tttkmbb.com/conversion/knots-to-mph.md",
    "json": "https://tttkmbb.com/conversion/knots-to-mph.json",
    "reverse": "https://tttkmbb.com/conversion/mph-to-knots",
    "quantity_converter": "https://tttkmbb.com/conversion/speed",
    "units": "https://tttkmbb.com/api/v1/units?quantity=speed"
  },
  "timestamp": "2026-09-24"
}