{
  "slug": "roman-numeral",
  "title": "Roman Numeral Converter",
  "heading": "Roman Numeral Converter",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/roman-numeral",
  "summary": "Number ↔ Roman, up to 3,999,999.",
  "description": "Converts between Arabic numerals and Roman numerals using overline notation for thousands above standard.",
  "formula": null,
  "dateModified": "2026-10-03",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=roman-numeral",
  "inputs": [
    {
      "id": "value",
      "label": "Number",
      "kind": "number",
      "hint": null,
      "default": 2026,
      "unit": null,
      "min": 1,
      "max": 3999999
    }
  ],
  "outputs": [
    {
      "id": "roman",
      "label": "Roman numeral",
      "format": "raw",
      "hint": null,
      "primary": true
    },
    {
      "id": "value",
      "label": "Decimal value",
      "format": "number",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Number: 2026"
    ],
    "outputs": [
      "Roman numeral: MMXXVI",
      "Decimal value: 2,026"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter number.",
      "Read your roman numeral on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "value": 1216
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "value": 2026
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "value": 3242
      }
    }
  ],
  "limitations": [
    "Estimates assume standard, average conditions — local rules, pricing, and materials vary.",
    "Results are rounded for readability; add a buffer before ordering, booking, or committing.",
    "Double-check anything with a real cost attached against a local quote."
  ],
  "faq": [
    {
      "q": "How does the roman numeral converter work?",
      "a": "Converts between Arabic numerals and Roman numerals using overline notation for thousands above standard."
    },
    {
      "q": "What do I need to enter?",
      "a": "Just one value: number. Each field starts with a sensible default, so you can change one number at a time and watch the result move."
    },
    {
      "q": "What does the roman numeral result mean?",
      "a": "It is returned as a plain value and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds."
    },
    {
      "q": "Is this calculator free, and do I need an account?",
      "a": "Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser."
    },
    {
      "q": "How accurate is the result?",
      "a": "It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary."
    },
    {
      "q": "Who is this tool for?",
      "a": "It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/random-number"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Roman Numeral Converter (https://www.revenuelab.fyi/toolbox/roman-numeral)"
}