{
  "entity_type": "unit_conversion_page",
  "id": "mpg-to-mpg-uk",
  "name": "Miles per US gallon (mpg) to Miles per imperial gallon (UK mpg)",
  "title": "Miles per US gallon (mpg) to Miles per imperial gallon (UK mpg) Converter (mpg (US) to mpg (UK))",
  "description": "Convert miles per US gallon (mpg) to miles per imperial gallon (UK mpg) with the formula mpg (UK) = mpg (US) × 1.200950. Conversion table and worked examples, with JSON API and MCP access.",
  "quantity": "fuel-economy",
  "quantity_name": "Fuel economy",
  "base_unit": "L/100km",
  "from_unit": {
    "symbol": "mpg_us",
    "display": "mpg (US)",
    "name": "miles per US gallon (mpg)",
    "singular": "mpg (US)"
  },
  "to_unit": {
    "symbol": "mpg_uk",
    "display": "mpg (UK)",
    "name": "miles per imperial gallon (UK mpg)",
    "singular": "mpg (UK)"
  },
  "linear": false,
  "factor": null,
  "inverse_factor": null,
  "formula": "mpg (UK) = mpg (US) × 1.200950",
  "reverse_formula": "mpg (US) = mpg (UK) × 0.832674",
  "unit_relation": "mpg (UK) = mpg (US) × 1.200950",
  "examples": [
    {
      "value": 7.5,
      "result": 9.00712,
      "text": "7.5 mpg (US) = 9.00712 mpg (UK)"
    },
    {
      "value": 30,
      "result": 36.0285,
      "text": "30 mpg (US) = 36.0285 mpg (UK)"
    },
    {
      "value": 45,
      "result": 54.0427,
      "text": "45 mpg (US) = 54.0427 mpg (UK)"
    }
  ],
  "table": [
    {
      "mpg_us": 3,
      "mpg_uk": 3.60285
    },
    {
      "mpg_us": 4,
      "mpg_uk": 4.8038
    },
    {
      "mpg_us": 5,
      "mpg_uk": 6.00475
    },
    {
      "mpg_us": 6,
      "mpg_uk": 7.2057
    },
    {
      "mpg_us": 7,
      "mpg_uk": 8.40665
    },
    {
      "mpg_us": 8,
      "mpg_uk": 9.6076
    },
    {
      "mpg_us": 9,
      "mpg_uk": 10.8085
    },
    {
      "mpg_us": 10,
      "mpg_uk": 12.0095
    },
    {
      "mpg_us": 12,
      "mpg_uk": 14.4114
    },
    {
      "mpg_us": 15,
      "mpg_uk": 18.0142
    },
    {
      "mpg_us": 20,
      "mpg_uk": 24.019
    },
    {
      "mpg_us": 25,
      "mpg_uk": 30.0237
    },
    {
      "mpg_us": 30,
      "mpg_uk": 36.0285
    },
    {
      "mpg_us": 35,
      "mpg_uk": 42.0332
    },
    {
      "mpg_us": 40,
      "mpg_uk": 48.038
    },
    {
      "mpg_us": 45,
      "mpg_uk": 54.0427
    },
    {
      "mpg_us": 50,
      "mpg_uk": 60.0475
    },
    {
      "mpg_us": 60,
      "mpg_uk": 72.057
    },
    {
      "mpg_us": 70,
      "mpg_uk": 84.0665
    },
    {
      "mpg_us": 80,
      "mpg_uk": 96.076
    },
    {
      "mpg_us": 100,
      "mpg_uk": 120.095
    }
  ],
  "faq": [
    {
      "q": "What is the formula to convert miles per US gallon (mpg) to miles per imperial gallon (UK mpg)?",
      "a": "mpg (UK) = mpg (US) × 1.200950. For example, 7.5 mpg (US) = 9.00712 mpg (UK)."
    },
    {
      "q": "How do I convert miles per imperial gallon (UK mpg) back to miles per US gallon (mpg)?",
      "a": "mpg (US) = mpg (UK) × 0.832674; the miles per imperial gallon (UK mpg)-to-miles per US gallon (mpg) page applies it directly."
    },
    {
      "q": "Why is there no single multiplication factor?",
      "a": "Fuel-economy units are reciprocal (distance per volume versus volume per distance), so the conversion divides a constant by the value instead of multiplying."
    }
  ],
  "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=7.5&from_unit=mpg_us&to_unit=mpg_uk",
    "calculator": "https://tttkmbb.com/api/v1/calculate/fuel-economy?value=7.5&from_unit=mpg_us&to_unit=mpg_uk",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 7.5,
      "from_unit": "mpg_us",
      "to_unit": "mpg_uk"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/mpg-to-mpg-uk",
    "markdown": "https://tttkmbb.com/conversion/mpg-to-mpg-uk.md",
    "json": "https://tttkmbb.com/conversion/mpg-to-mpg-uk.json",
    "reverse": "https://tttkmbb.com/conversion/mpg-uk-to-mpg",
    "quantity_converter": "https://tttkmbb.com/conversion/fuel-economy",
    "units": "https://tttkmbb.com/api/v1/units?quantity=fuel-economy"
  },
  "timestamp": "2026-09-24"
}