{
  "id": "percent-error-calculator",
  "version": "1.0.0",
  "name": "Percent Error Calculator",
  "shortName": "Percent error",
  "description": "Compare an observed value with an exact or accepted value.",
  "category": "Math & Statistics",
  "categorySlug": "math-statistics",
  "keywords": [
    "percentage error",
    "absolute error",
    "observed value",
    "accepted value"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "new",
  "engine": "native",
  "creator": null,
  "reviewer": null,
  "quality": {
    "availability": "live",
    "technicalReviewRecord": "/reviews/percent-error-calculator.json",
    "qualifiedReview": "pending",
    "qualifiedReviewer": null,
    "qualifiedReviewDate": null,
    "formulaVersion": "1.0.0",
    "referenceCoverage": "references-pending",
    "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
    "historicalMetadataDate": "2026-08-18",
    "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
  },
  "urls": {
    "page": "/calculator/percent-error-calculator/",
    "definition": "/calculator/percent-error-calculator/definition.json",
    "schema": "/calculator/percent-error-calculator/schema.json",
    "llms": "/calculator/percent-error-calculator/llms.txt",
    "legacyDefinition": "/calculator/percent-error-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/percent-error-calculator/?observed=9.7&exact=10",
  "queryParameters": {
    "observed": {
      "label": "Observed value",
      "type": "number",
      "required": true,
      "default": 9.7
    },
    "exact": {
      "label": "Exact value",
      "type": "number",
      "required": true,
      "default": 10
    }
  },
  "inputs": [
    {
      "id": "observed",
      "label": "Observed value",
      "type": "number",
      "required": true,
      "defaultValue": 9.7,
      "step": 0.01,
      "width": "half"
    },
    {
      "id": "exact",
      "label": "Exact value",
      "type": "number",
      "required": true,
      "defaultValue": 10,
      "step": 0.01,
      "width": "half"
    }
  ],
  "outputs": [
    {
      "id": "percentError",
      "label": "Percent error",
      "format": "percent",
      "primary": true
    },
    {
      "id": "absoluteError",
      "label": "Absolute error",
      "format": "number"
    },
    {
      "id": "signedError",
      "label": "Signed error",
      "format": "number"
    }
  ],
  "formula": {
    "expression": "Percent error = |observed − exact| ÷ |exact| × 100"
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "observed": 9.7,
        "exact": 10
      }
    }
  ],
  "sources": []
}