{
  "entity_type": "unit_conversion_page",
  "id": "months-to-days",
  "name": "Months (30 days) to Days",
  "title": "Months (30 days) to Days Converter (mo to d)",
  "description": "Convert months (30 days) to days: 1 mo = 30 d. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "time",
  "quantity_name": "Time",
  "base_unit": "s",
  "from_unit": {
    "symbol": "month_30",
    "display": "mo",
    "name": "months (30 days)",
    "singular": "month"
  },
  "to_unit": {
    "symbol": "day",
    "display": "d",
    "name": "days",
    "singular": "day"
  },
  "linear": true,
  "factor": 30,
  "inverse_factor": 0.03333333333,
  "formula": "days = months (30 days) × 30",
  "reverse_formula": "months (30 days) = days × 0.03333333333",
  "unit_relation": "1 mo = 30 d",
  "examples": [
    {
      "value": 5,
      "result": 150,
      "text": "5 mo = 150 d"
    },
    {
      "value": 12.5,
      "result": 375,
      "text": "12.5 mo = 375 d"
    },
    {
      "value": 100,
      "result": 3000,
      "text": "100 mo = 3000 d"
    }
  ],
  "table": [
    {
      "month_30": 1,
      "day": 30
    },
    {
      "month_30": 2,
      "day": 60
    },
    {
      "month_30": 3,
      "day": 90
    },
    {
      "month_30": 4,
      "day": 120
    },
    {
      "month_30": 5,
      "day": 150
    },
    {
      "month_30": 6,
      "day": 180
    },
    {
      "month_30": 7,
      "day": 210
    },
    {
      "month_30": 8,
      "day": 240
    },
    {
      "month_30": 9,
      "day": 270
    },
    {
      "month_30": 10,
      "day": 300
    },
    {
      "month_30": 15,
      "day": 450
    },
    {
      "month_30": 20,
      "day": 600
    },
    {
      "month_30": 25,
      "day": 750
    },
    {
      "month_30": 30,
      "day": 900
    },
    {
      "month_30": 40,
      "day": 1200
    },
    {
      "month_30": 50,
      "day": 1500
    },
    {
      "month_30": 75,
      "day": 2250
    },
    {
      "month_30": 100,
      "day": 3000
    },
    {
      "month_30": 200,
      "day": 6000
    },
    {
      "month_30": 250,
      "day": 7500
    },
    {
      "month_30": 500,
      "day": 15000
    },
    {
      "month_30": 1000,
      "day": 30000
    }
  ],
  "faq": [
    {
      "q": "How many days are in one month?",
      "a": "1 mo = 30 d. 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 months (30 days) to days?",
      "a": "Multiply the value in months (30 days) by 30: days = months (30 days) × 30. For example, 5 mo = 150 d."
    },
    {
      "q": "How do I convert days back to months (30 days)?",
      "a": "Multiply by the inverse factor 0.03333333333 (months (30 days) = days × 0.03333333333), or use the days-to-months (30 days) 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=month_30&to_unit=day",
    "calculator": "https://tttkmbb.com/api/v1/calculate/time?value=5&from_unit=month_30&to_unit=day",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "month_30",
      "to_unit": "day"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/months-to-days",
    "markdown": "https://tttkmbb.com/conversion/months-to-days.md",
    "json": "https://tttkmbb.com/conversion/months-to-days.json",
    "reverse": "https://tttkmbb.com/conversion/days-to-months",
    "quantity_converter": "https://tttkmbb.com/conversion/time",
    "units": "https://tttkmbb.com/api/v1/units?quantity=time"
  },
  "timestamp": "2026-09-24"
}