{
  "address": "3d8c12118d5634109a43b67fa8161651",
  "category": "other",
  "question": "What is 1 atm in psi?",
  "answer": "14.6959 psi",
  "askedBy": {
    "kind": "guest",
    "display": "method deck",
    "stamped": false,
    "id": null
  },
  "answeredBy": "method",
  "madeAt": "2026-09-30T22:39:30.722Z",
  "validUntil": null,
  "validityClass": "forever",
  "sources": [
    {
      "label": "Guide for the Use of the International System of Units (SI)",
      "url": null
    }
  ],
  "supersedes": null,
  "supersededBy": null,
  "isSeed": false,
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  "seedAttribution": null,
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  "publishedAt": null,
  "unpublishedAt": null,
  "voteCount": 0,
  "queuedForSubstrate": false,
  "answerMethod": "method",
  "unsourced": false,
  "source": {
    "kind": "standard",
    "value": "NIST Special Publication 811 (2008 edition), Appendix B.9, Table for pressure",
    "retrieved_utc": "2026-09-30T19:29:48Z"
  },
  "qsha256": "e09781a58a5f021864a746944c7ad242540a1e5886f50b43f1a5899254ff2656",
  "runOne": null,
  "cardContractVersion": "card_contract/1",
  "deck_id": "method-deck",
  "deck_title": "Method Deck",
  "method": {
    "name": "Pressure conversion",
    "version": "1",
    "source_url_or_file": "methods/pressure-conversion.cjs",
    "sha256_of_method_file": "715fc7413cb87c889f6569c86465b4e7606e87a1e0ce923ea2bcb515761516bc"
  },
  "receipt": {
    "inSubstrate": false,
    "local": true,
    "modelCallsAtMint": 0,
    "tokensAtMint": 0
  },
  "method_deck": {
    "inputs": [
      {
        "name": "value",
        "type": "number",
        "unit": "from_unit",
        "required": true,
        "description": "The pressure to convert"
      },
      {
        "name": "from_unit",
        "type": "string",
        "required": true,
        "description": "Unit of the input value",
        "enum": [
          "Pa",
          "kPa",
          "bar",
          "atm",
          "psi",
          "mmHg",
          "inHg"
        ]
      },
      {
        "name": "to_unit",
        "type": "string",
        "required": true,
        "description": "Unit to convert into",
        "enum": [
          "Pa",
          "kPa",
          "bar",
          "atm",
          "psi",
          "mmHg",
          "inHg"
        ]
      }
    ],
    "outputs": [
      {
        "name": "result",
        "unit": "to_unit",
        "description": "The converted pressure"
      }
    ],
    "steps": [
      "Look up the exact pascal-equivalent of from_unit and of to_unit.",
      "Convert the input to pascals: pa = value * pa_per(from_unit).",
      "Convert pascals to the target unit: result = pa / pa_per(to_unit).",
      "Round result to 6 significant figures."
    ],
    "constants": [
      {
        "name": "Pa",
        "value": 1,
        "unit": "Pa",
        "source": 0
      },
      {
        "name": "kPa",
        "value": 1000,
        "unit": "Pa",
        "source": 0
      },
      {
        "name": "bar",
        "value": 100000,
        "unit": "Pa",
        "source": 0
      },
      {
        "name": "atm",
        "value": 101325,
        "unit": "Pa",
        "source": 0
      },
      {
        "name": "psi",
        "value": 6894.757293168361,
        "unit": "Pa",
        "source": 0
      },
      {
        "name": "mmHg",
        "value": 133.322387415,
        "unit": "Pa",
        "source": 0
      },
      {
        "name": "inHg",
        "value": 3386.388640341,
        "unit": "Pa",
        "source": 0
      }
    ],
    "examples": [
      {
        "name": "worked example",
        "inputs": {
          "value": 1,
          "from_unit": "atm",
          "to_unit": "psi"
        },
        "expected": {
          "answer": "14.6959 psi"
        },
        "check": "By hand: 101325 Pa / 6894.757293... Pa/psi = 14.69595...; rounded to 6 significant figures is 14.6959."
      },
      {
        "name": "test vector: bar to kPa",
        "inputs": {
          "value": 1,
          "from_unit": "bar",
          "to_unit": "kPa"
        },
        "expected": {
          "answer": "100.000 kPa"
        },
        "check": "By definition 1 bar = 100,000 Pa = 100 kPa exactly."
      },
      {
        "name": "test vector: inHg to mmHg",
        "inputs": {
          "value": 1,
          "from_unit": "inHg",
          "to_unit": "mmHg"
        },
        "expected": {
          "answer": "25.4000 mmHg"
        },
        "check": "By hand: both use the same mercury column density and gravity, so the ratio is exactly the length ratio: 1 inch / 1 mm = 25.4."
      }
    ],
    "disclaimer": null,
    "deck_category": "units"
  },
  "status": "minted",
  "kind": "method",
  "provenanceClass": "own_question",
  "provenance": {
    "schema": "card_provenance/2.0.0",
    "chain": [
      {
        "source": {
          "kind": "standard",
          "value": "NIST Special Publication 811 (2008 edition), Appendix B.9, Table for pressure",
          "retrieved_utc": "2026-09-30T19:29:48Z"
        },
        "sha256": "4f08815fce4774e27074da0e09b87d06e3c6e6b7946cfa52fd36d606f7e60fbc",
        "supersedes": null,
        "added_utc": "2026-09-30T22:39:30.722Z",
        "added_by": "method:Pressure conversion",
        "why": "the method that computed this answer",
        "check": null,
        "status_label": "pending",
        "signature": null
      }
    ]
  }
}