{
  "entity_type": "unit_conversion_page",
  "id": "kelvin-to-rankine",
  "name": "Kelvin to Degrees Rankine",
  "title": "Kelvin to Degrees Rankine Converter (K to °R)",
  "description": "Convert kelvin to degrees Rankine with the formula °R = K × 9/5. Conversion table and worked examples, with JSON API and MCP access.",
  "quantity": "temperature",
  "quantity_name": "Temperature",
  "base_unit": "K",
  "from_unit": {
    "symbol": "K",
    "display": "K",
    "name": "kelvin",
    "singular": "kelvin"
  },
  "to_unit": {
    "symbol": "R",
    "display": "°R",
    "name": "degrees Rankine",
    "singular": "degree Rankine"
  },
  "linear": false,
  "factor": null,
  "inverse_factor": null,
  "formula": "°R = K × 9/5",
  "reverse_formula": "K = °R × 5/9",
  "unit_relation": "°R = K × 9/5",
  "examples": [
    {
      "value": 300,
      "result": 540,
      "text": "300 K = 540 °R"
    },
    {
      "value": 273.15,
      "result": 491.67,
      "text": "273.15 K = 491.67 °R"
    },
    {
      "value": 0,
      "result": 0,
      "text": "0 K = 0 °R"
    }
  ],
  "table": [
    {
      "K": 0,
      "R": 0
    },
    {
      "K": 50,
      "R": 90
    },
    {
      "K": 100,
      "R": 180
    },
    {
      "K": 150,
      "R": 270
    },
    {
      "K": 200,
      "R": 360
    },
    {
      "K": 250,
      "R": 450
    },
    {
      "K": 273.15,
      "R": 491.67
    },
    {
      "K": 293.15,
      "R": 527.67
    },
    {
      "K": 300,
      "R": 540
    },
    {
      "K": 310,
      "R": 558
    },
    {
      "K": 350,
      "R": 630
    },
    {
      "K": 373.15,
      "R": 671.67
    },
    {
      "K": 400,
      "R": 720
    },
    {
      "K": 500,
      "R": 900
    },
    {
      "K": 600,
      "R": 1080
    },
    {
      "K": 800,
      "R": 1440
    },
    {
      "K": 1000,
      "R": 1800
    },
    {
      "K": 1500,
      "R": 2700
    },
    {
      "K": 2000,
      "R": 3600
    },
    {
      "K": 5000,
      "R": 9000
    }
  ],
  "faq": [
    {
      "q": "What is the formula to convert kelvin to degrees Rankine?",
      "a": "°R = K × 9/5. For example, 300 K = 540 °R."
    },
    {
      "q": "How do I convert degrees Rankine back to kelvin?",
      "a": "K = °R × 5/9; the degrees Rankine-to-kelvin page applies it directly."
    },
    {
      "q": "Why is there no single multiplication factor?",
      "a": "Temperature scales have different zero points, so the conversion is an affine formula (scale and offset), not a plain multiplication."
    }
  ],
  "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=300&from_unit=K&to_unit=R",
    "calculator": "https://tttkmbb.com/api/v1/calculate/temperature?value=300&from_unit=K&to_unit=R",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 300,
      "from_unit": "K",
      "to_unit": "R"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/kelvin-to-rankine",
    "markdown": "https://tttkmbb.com/conversion/kelvin-to-rankine.md",
    "json": "https://tttkmbb.com/conversion/kelvin-to-rankine.json",
    "reverse": "https://tttkmbb.com/conversion/rankine-to-kelvin",
    "quantity_converter": "https://tttkmbb.com/conversion/temperature",
    "units": "https://tttkmbb.com/api/v1/units?quantity=temperature"
  },
  "timestamp": "2026-09-24"
}