{
  "entity_type": "unit_conversion_page",
  "id": "psi-to-atm",
  "name": "Psi to Atmospheres",
  "title": "Psi to Atmospheres Converter (psi to atm)",
  "description": "Convert psi to atmospheres: 1 psi = 0.068046 atm. 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": "atm",
    "display": "atm",
    "name": "atmospheres",
    "singular": "atmosphere"
  },
  "linear": true,
  "factor": 0.06804596391,
  "inverse_factor": 14.69594878,
  "formula": "atmospheres = psi × 0.06804596391",
  "reverse_formula": "psi = atmospheres × 14.69594878",
  "unit_relation": "1 psi = 0.068046 atm",
  "examples": [
    {
      "value": 5,
      "result": 0.34023,
      "text": "5 psi = 0.34023 atm"
    },
    {
      "value": 12.5,
      "result": 0.850575,
      "text": "12.5 psi = 0.850575 atm"
    },
    {
      "value": 100,
      "result": 6.8046,
      "text": "100 psi = 6.8046 atm"
    }
  ],
  "table": [
    {
      "psi": 1,
      "atm": 0.068046
    },
    {
      "psi": 2,
      "atm": 0.136092
    },
    {
      "psi": 3,
      "atm": 0.204138
    },
    {
      "psi": 4,
      "atm": 0.272184
    },
    {
      "psi": 5,
      "atm": 0.34023
    },
    {
      "psi": 6,
      "atm": 0.408276
    },
    {
      "psi": 7,
      "atm": 0.476322
    },
    {
      "psi": 8,
      "atm": 0.544368
    },
    {
      "psi": 9,
      "atm": 0.612414
    },
    {
      "psi": 10,
      "atm": 0.68046
    },
    {
      "psi": 15,
      "atm": 1.02069
    },
    {
      "psi": 20,
      "atm": 1.36092
    },
    {
      "psi": 25,
      "atm": 1.70115
    },
    {
      "psi": 30,
      "atm": 2.04138
    },
    {
      "psi": 40,
      "atm": 2.72184
    },
    {
      "psi": 50,
      "atm": 3.4023
    },
    {
      "psi": 75,
      "atm": 5.10345
    },
    {
      "psi": 100,
      "atm": 6.8046
    },
    {
      "psi": 200,
      "atm": 13.6092
    },
    {
      "psi": 250,
      "atm": 17.0115
    },
    {
      "psi": 500,
      "atm": 34.023
    },
    {
      "psi": 1000,
      "atm": 68.046
    }
  ],
  "faq": [
    {
      "q": "How many atmospheres are in one psi?",
      "a": "1 psi = 0.068046 atm. 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 atmospheres?",
      "a": "Multiply the value in psi by 0.06804596391: atmospheres = psi × 0.06804596391. For example, 5 psi = 0.34023 atm."
    },
    {
      "q": "How do I convert atmospheres back to psi?",
      "a": "Multiply by the inverse factor 14.69594878 (psi = atmospheres × 14.69594878), or use the atmospheres-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=atm",
    "calculator": "https://tttkmbb.com/api/v1/calculate/pressure?value=5&from_unit=psi&to_unit=atm",
    "mcp_tool": "convert_units",
    "mcp_arguments": {
      "value": 5,
      "from_unit": "psi",
      "to_unit": "atm"
    }
  },
  "links": {
    "html": "https://tttkmbb.com/conversion/psi-to-atm",
    "markdown": "https://tttkmbb.com/conversion/psi-to-atm.md",
    "json": "https://tttkmbb.com/conversion/psi-to-atm.json",
    "reverse": "https://tttkmbb.com/conversion/atm-to-psi",
    "quantity_converter": "https://tttkmbb.com/conversion/pressure",
    "units": "https://tttkmbb.com/api/v1/units?quantity=pressure"
  },
  "timestamp": "2026-09-24"
}