{
  "id": "fahrenheit-to-celsius",
  "version": "ac5d27214d4d",
  "status": "published",
  "name": "Fahrenheit to Celsius Converter",
  "question": "Fahrenheit to Celsius converter",
  "summary": "Converts degrees Fahrenheit (°F) to degrees Celsius (°C) and back, with the exact unit definitions.",
  "category": "convert",
  "subcategory": "units",
  "url": "https://www.acalculator.org/convert/fahrenheit-to-celsius",
  "markdown": "https://www.acalculator.org/convert/fahrenheit-to-celsius.md",
  "kind": "formulas",
  "method": "°C = (°F − 32) × 5 ÷ 9",
  "assumptions": [
    "Temperature scales have different zero points, so the conversion adds or subtracts as well as multiplies.",
    "The answer shows at most 6 decimal places; the calculation keeps full precision."
  ],
  "inputs": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "properties": {
      "value": {
        "title": "Degrees Fahrenheit (°F)",
        "description": "The amount in degrees Fahrenheit to convert.",
        "type": "number",
        "minimum": -459.67,
        "maximum": 1000000000000
      },
      "result": {
        "title": "Degrees Celsius (°C)",
        "description": "The same amount in degrees Celsius.",
        "type": "number",
        "minimum": -273.15,
        "maximum": 555555555537.7778
      }
    }
  },
  "solve": {
    "fillAny": 1,
    "variables": [
      "value",
      "result"
    ],
    "inputsOnly": []
  },
  "outputs": {
    "value": {
      "label": "Degrees Fahrenheit (°F)",
      "description": "The amount in degrees Fahrenheit to convert.",
      "format": "number"
    },
    "result": {
      "label": "Degrees Celsius (°C)",
      "description": "The amount in degrees Celsius.",
      "format": "number"
    }
  },
  "defaultAnswer": {
    "inputs": {
      "value": 98.6
    },
    "outputs": {
      "result": 37
    },
    "text": "98.6 °F = 37 °C."
  },
  "examples": [
    {
      "given": {
        "value": 212
      },
      "expect": {
        "result": 100
      },
      "source": "exact unit definitions in NIST SP 811 (2008), Appendix B.8"
    },
    {
      "given": {
        "value": 98.6
      },
      "expect": {
        "result": 37
      },
      "source": "exact unit definitions in NIST SP 811 (2008), Appendix B.8"
    },
    {
      "given": {
        "result": 37
      },
      "expect": {
        "value": 98.6
      },
      "source": "exact unit definitions in NIST SP 811 (2008), Appendix B.8"
    }
  ],
  "sources": [
    "NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B.8. https://www.nist.gov/pml/special-publication-811"
  ],
  "related": [
    "celsius-to-fahrenheit"
  ],
  "changelog": []
}