{
  "entity_type": "unit_conversion_page",
  "id": "miles-to-feet",
  "name": "Miles to Feet",
  "title": "Miles to Feet Converter (mi to ft)",
  "description": "Convert miles to feet: 1 mi = 5280 ft. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "length",
  "quantity_name": "Length",
  "base_unit": "m",
  "from_unit": {
    "symbol": "mi",
    "display": "mi",
    "name": "miles",
    "singular": "mile"
  },
  "to_unit": {
    "symbol": "ft",
    "display": "ft",
    "name": "feet",
    "singular": "foot"
  },
  "linear": true,
  "factor": 5280,
  "inverse_factor": 0.0001893939394,
  "formula": "feet = miles × 5280",
  "reverse_formula": "miles = feet × 0.0001893939394",
  "unit_relation": "1 mi = 5280 ft",
  "examples": [
    {
      "value": 5,
      "result": 26400,
      "text": "5 mi = 26400 ft"
    },
    {
      "value": 12.5,
      "result": 66000,
      "text": "12.5 mi = 66000 ft"
    },
    {
      "value": 100,
      "result": 528000,
      "text": "100 mi = 528000 ft"
    }
  ],
  "table": [
    {
      "mi": 1,
      "ft": 5280
    },
    {
      "mi": 2,
      "ft": 10560
    },
    {
      "mi": 3,
      "ft": 15840
    },
    {
      "mi": 4,
      "ft": 21120
    },
    {
      "mi": 5,
      "ft": 26400
    },
    {
      "mi": 6,
      "ft": 31680
    },
    {
      "mi": 7,
      "ft": 36960
    },
    {
      "mi": 8,
      "ft": 42240
    },
    {
      "mi": 9,
      "ft": 47520
    },
    {
      "mi": 10,
      "ft": 52800
    },
    {
      "mi": 15,
      "ft": 79200
    },
    {
      "mi": 20,
      "ft": 105600
    },
    {
      "mi": 25,
      "ft": 132000
    },
    {
      "mi": 30,
      "ft": 158400
    },
    {
      "mi": 40,
      "ft": 211200
    },
    {
      "mi": 50,
      "ft": 264000
    },
    {
      "mi": 75,
      "ft": 396000
    },
    {
      "mi": 100,
      "ft": 528000
    },
    {
      "mi": 200,
      "ft": 1056000
    },
    {
      "mi": 250,
      "ft": 1320000
    },
    {
      "mi": 500,
      "ft": 2640000
    },
    {
      "mi": 1000,
      "ft": 5280000
    }
  ],
  "faq": [
    {
      "q": "How many feet are in one mile?",
      "a": "1 mi = 5280 ft. 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 miles to feet?",
      "a": "Multiply the value in miles by 5280: feet = miles × 5280. For example, 5 mi = 26400 ft."
    },
    {
      "q": "How do I convert feet back to miles?",
      "a": "Multiply by the inverse factor 0.0001893939394 (miles = feet × 0.0001893939394), or use the feet-to-miles 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=mi&to_unit=ft",
    "calculator": "https://tttkmbb.com/api/v1/calculate/length?value=5&from_unit=mi&to_unit=ft",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "mi",
      "to_unit": "ft"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/miles-to-feet",
    "markdown": "https://tttkmbb.com/conversion/miles-to-feet.md",
    "json": "https://tttkmbb.com/conversion/miles-to-feet.json",
    "reverse": "https://tttkmbb.com/conversion/feet-to-miles",
    "quantity_converter": "https://tttkmbb.com/conversion/length",
    "units": "https://tttkmbb.com/api/v1/units?quantity=length"
  },
  "timestamp": "2026-09-24"
}