{
  "entity_type": "unit_conversion_page",
  "id": "fl-oz-to-cups",
  "name": "US fluid ounces to US cups",
  "title": "US fluid ounces to US cups Converter (fl oz to cup)",
  "description": "Convert US fluid ounces to US cups: 1 fl oz = 0.125 cup. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "volume",
  "quantity_name": "Volume",
  "base_unit": "L",
  "from_unit": {
    "symbol": "fl_oz_us",
    "display": "fl oz",
    "name": "US fluid ounces",
    "singular": "fluid ounce"
  },
  "to_unit": {
    "symbol": "cup_us",
    "display": "cup",
    "name": "US cups",
    "singular": "cup"
  },
  "linear": true,
  "factor": 0.125,
  "inverse_factor": 8,
  "formula": "US cups = US fluid ounces × 0.125",
  "reverse_formula": "US fluid ounces = US cups × 8",
  "unit_relation": "1 fl oz = 0.125 cup",
  "examples": [
    {
      "value": 5,
      "result": 0.625,
      "text": "5 fl oz = 0.625 cup"
    },
    {
      "value": 12.5,
      "result": 1.5625,
      "text": "12.5 fl oz = 1.5625 cup"
    },
    {
      "value": 100,
      "result": 12.5,
      "text": "100 fl oz = 12.5 cup"
    }
  ],
  "table": [
    {
      "fl_oz_us": 1,
      "cup_us": 0.125
    },
    {
      "fl_oz_us": 2,
      "cup_us": 0.25
    },
    {
      "fl_oz_us": 3,
      "cup_us": 0.375
    },
    {
      "fl_oz_us": 4,
      "cup_us": 0.5
    },
    {
      "fl_oz_us": 5,
      "cup_us": 0.625
    },
    {
      "fl_oz_us": 6,
      "cup_us": 0.75
    },
    {
      "fl_oz_us": 7,
      "cup_us": 0.875
    },
    {
      "fl_oz_us": 8,
      "cup_us": 1
    },
    {
      "fl_oz_us": 9,
      "cup_us": 1.125
    },
    {
      "fl_oz_us": 10,
      "cup_us": 1.25
    },
    {
      "fl_oz_us": 15,
      "cup_us": 1.875
    },
    {
      "fl_oz_us": 20,
      "cup_us": 2.5
    },
    {
      "fl_oz_us": 25,
      "cup_us": 3.125
    },
    {
      "fl_oz_us": 30,
      "cup_us": 3.75
    },
    {
      "fl_oz_us": 40,
      "cup_us": 5
    },
    {
      "fl_oz_us": 50,
      "cup_us": 6.25
    },
    {
      "fl_oz_us": 75,
      "cup_us": 9.375
    },
    {
      "fl_oz_us": 100,
      "cup_us": 12.5
    },
    {
      "fl_oz_us": 200,
      "cup_us": 25
    },
    {
      "fl_oz_us": 250,
      "cup_us": 31.25
    },
    {
      "fl_oz_us": 500,
      "cup_us": 62.5
    },
    {
      "fl_oz_us": 1000,
      "cup_us": 125
    }
  ],
  "faq": [
    {
      "q": "How many US cups are in one fluid ounce?",
      "a": "1 fl oz = 0.125 cup. 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 US fluid ounces to US cups?",
      "a": "Multiply the value in US fluid ounces by 0.125: US cups = US fluid ounces × 0.125. For example, 5 fl oz = 0.625 cup."
    },
    {
      "q": "How do I convert US cups back to US fluid ounces?",
      "a": "Multiply by the inverse factor 8 (US fluid ounces = US cups × 8), or use the US cups-to-US fluid ounces 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=fl_oz_us&to_unit=cup_us",
    "calculator": "https://tttkmbb.com/api/v1/calculate/volume?value=5&from_unit=fl_oz_us&to_unit=cup_us",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "fl_oz_us",
      "to_unit": "cup_us"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/fl-oz-to-cups",
    "markdown": "https://tttkmbb.com/conversion/fl-oz-to-cups.md",
    "json": "https://tttkmbb.com/conversion/fl-oz-to-cups.json",
    "reverse": "https://tttkmbb.com/conversion/cups-to-fl-oz",
    "quantity_converter": "https://tttkmbb.com/conversion/volume",
    "units": "https://tttkmbb.com/api/v1/units?quantity=volume"
  },
  "timestamp": "2026-09-24"
}