{
  "entity_type": "unit_conversion_page",
  "id": "psi-to-mpa",
  "name": "Psi to Megapascals",
  "title": "Psi to Megapascals Converter (psi to MPa)",
  "description": "Convert psi to megapascals: 1 psi = 0.00689476 MPa. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.",
  "quantity": "pressure",
  "quantity_name": "Pressure",
  "base_unit": "Pa",
  "from_unit": {
    "symbol": "psi",
    "display": "psi",
    "name": "psi",
    "singular": "psi"
  },
  "to_unit": {
    "symbol": "MPa",
    "display": "MPa",
    "name": "megapascals",
    "singular": "megapascal"
  },
  "linear": true,
  "factor": 0.006894757293,
  "inverse_factor": 145.0377377,
  "formula": "megapascals = psi × 0.006894757293",
  "reverse_formula": "psi = megapascals × 145.0377377",
  "unit_relation": "1 psi = 0.00689476 MPa",
  "examples": [
    {
      "value": 5,
      "result": 0.0344738,
      "text": "5 psi = 0.0344738 MPa"
    },
    {
      "value": 12.5,
      "result": 0.0861845,
      "text": "12.5 psi = 0.0861845 MPa"
    },
    {
      "value": 100,
      "result": 0.689476,
      "text": "100 psi = 0.689476 MPa"
    }
  ],
  "table": [
    {
      "psi": 1,
      "MPa": 0.00689476
    },
    {
      "psi": 2,
      "MPa": 0.0137895
    },
    {
      "psi": 3,
      "MPa": 0.0206843
    },
    {
      "psi": 4,
      "MPa": 0.027579
    },
    {
      "psi": 5,
      "MPa": 0.0344738
    },
    {
      "psi": 6,
      "MPa": 0.0413685
    },
    {
      "psi": 7,
      "MPa": 0.0482633
    },
    {
      "psi": 8,
      "MPa": 0.0551581
    },
    {
      "psi": 9,
      "MPa": 0.0620528
    },
    {
      "psi": 10,
      "MPa": 0.0689476
    },
    {
      "psi": 15,
      "MPa": 0.103421
    },
    {
      "psi": 20,
      "MPa": 0.137895
    },
    {
      "psi": 25,
      "MPa": 0.172369
    },
    {
      "psi": 30,
      "MPa": 0.206843
    },
    {
      "psi": 40,
      "MPa": 0.27579
    },
    {
      "psi": 50,
      "MPa": 0.344738
    },
    {
      "psi": 75,
      "MPa": 0.517107
    },
    {
      "psi": 100,
      "MPa": 0.689476
    },
    {
      "psi": 200,
      "MPa": 1.37895
    },
    {
      "psi": 250,
      "MPa": 1.72369
    },
    {
      "psi": 500,
      "MPa": 3.44738
    },
    {
      "psi": 1000,
      "MPa": 6.89476
    }
  ],
  "faq": [
    {
      "q": "How many megapascals are in one psi?",
      "a": "1 psi = 0.00689476 MPa. 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 psi to megapascals?",
      "a": "Multiply the value in psi by 0.006894757293: megapascals = psi × 0.006894757293. For example, 5 psi = 0.0344738 MPa."
    },
    {
      "q": "How do I convert megapascals back to psi?",
      "a": "Multiply by the inverse factor 145.0377377 (psi = megapascals × 145.0377377), or use the megapascals-to-psi 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=psi&to_unit=MPa",
    "calculator": "https://tttkmbb.com/api/v1/calculate/pressure?value=5&from_unit=psi&to_unit=MPa",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "psi",
      "to_unit": "MPa"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/psi-to-mpa",
    "markdown": "https://tttkmbb.com/conversion/psi-to-mpa.md",
    "json": "https://tttkmbb.com/conversion/psi-to-mpa.json",
    "reverse": "https://tttkmbb.com/conversion/mpa-to-psi",
    "quantity_converter": "https://tttkmbb.com/conversion/pressure",
    "units": "https://tttkmbb.com/api/v1/units?quantity=pressure"
  },
  "timestamp": "2026-09-24"
}