{
  "entity_type": "unit_conversion_page",
  "id": "kj-to-btu",
  "name": "Kilojoules to BTU",
  "title": "Kilojoules to BTU Converter (kJ to BTU)",
  "description": "Convert kilojoules to BTU: 1 kJ = 0.947817 BTU. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "energy",
  "quantity_name": "Energy",
  "base_unit": "J",
  "from_unit": {
    "symbol": "kJ",
    "display": "kJ",
    "name": "kilojoules",
    "singular": "kilojoule"
  },
  "to_unit": {
    "symbol": "BTU",
    "display": "BTU",
    "name": "BTU",
    "singular": "BTU"
  },
  "linear": true,
  "factor": 0.9478171203,
  "inverse_factor": 1.055055853,
  "formula": "BTU = kilojoules × 0.9478171203",
  "reverse_formula": "kilojoules = BTU × 1.055055853",
  "unit_relation": "1 kJ = 0.947817 BTU",
  "examples": [
    {
      "value": 5,
      "result": 4.73909,
      "text": "5 kJ = 4.73909 BTU"
    },
    {
      "value": 12.5,
      "result": 11.8477,
      "text": "12.5 kJ = 11.8477 BTU"
    },
    {
      "value": 100,
      "result": 94.7817,
      "text": "100 kJ = 94.7817 BTU"
    }
  ],
  "table": [
    {
      "kJ": 1,
      "BTU": 0.947817
    },
    {
      "kJ": 2,
      "BTU": 1.89563
    },
    {
      "kJ": 3,
      "BTU": 2.84345
    },
    {
      "kJ": 4,
      "BTU": 3.79127
    },
    {
      "kJ": 5,
      "BTU": 4.73909
    },
    {
      "kJ": 6,
      "BTU": 5.6869
    },
    {
      "kJ": 7,
      "BTU": 6.63472
    },
    {
      "kJ": 8,
      "BTU": 7.58254
    },
    {
      "kJ": 9,
      "BTU": 8.53035
    },
    {
      "kJ": 10,
      "BTU": 9.47817
    },
    {
      "kJ": 15,
      "BTU": 14.2173
    },
    {
      "kJ": 20,
      "BTU": 18.9563
    },
    {
      "kJ": 25,
      "BTU": 23.6954
    },
    {
      "kJ": 30,
      "BTU": 28.4345
    },
    {
      "kJ": 40,
      "BTU": 37.9127
    },
    {
      "kJ": 50,
      "BTU": 47.3909
    },
    {
      "kJ": 75,
      "BTU": 71.0863
    },
    {
      "kJ": 100,
      "BTU": 94.7817
    },
    {
      "kJ": 200,
      "BTU": 189.563
    },
    {
      "kJ": 250,
      "BTU": 236.954
    },
    {
      "kJ": 500,
      "BTU": 473.909
    },
    {
      "kJ": 1000,
      "BTU": 947.817
    }
  ],
  "faq": [
    {
      "q": "How many BTU are in one kilojoule?",
      "a": "1 kJ = 0.947817 BTU. 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 kilojoules to BTU?",
      "a": "Multiply the value in kilojoules by 0.9478171203: BTU = kilojoules × 0.9478171203. For example, 5 kJ = 4.73909 BTU."
    },
    {
      "q": "How do I convert BTU back to kilojoules?",
      "a": "Multiply by the inverse factor 1.055055853 (kilojoules = BTU × 1.055055853), or use the BTU-to-kilojoules 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=kJ&to_unit=BTU",
    "calculator": "https://tttkmbb.com/api/v1/calculate/energy?value=5&from_unit=kJ&to_unit=BTU",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "kJ",
      "to_unit": "BTU"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/kj-to-btu",
    "markdown": "https://tttkmbb.com/conversion/kj-to-btu.md",
    "json": "https://tttkmbb.com/conversion/kj-to-btu.json",
    "reverse": "https://tttkmbb.com/conversion/btu-to-kj",
    "quantity_converter": "https://tttkmbb.com/conversion/energy",
    "units": "https://tttkmbb.com/api/v1/units?quantity=energy"
  },
  "timestamp": "2026-09-24"
}