{
  "slug": "a1c-to-glucose",
  "title": "A1C to Average Glucose Converter",
  "heading": "A1C to Average Glucose Calculator",
  "category": "fitness-health",
  "url": "https://www.revenuelab.fyi/toolbox/a1c-to-glucose",
  "summary": "Convert HbA1c to estimated average glucose in mg/dL and mmol/L.",
  "description": "Translate an A1C percentage into estimated average glucose using the ADAG study equation, and go the other direction from a meter average back to a projected A1C.",
  "formula": "eAG (mg/dL) = 28.7 × A1C − 46.7.",
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=a1c-to-glucose",
  "inputs": [
    {
      "id": "a1c",
      "label": "HbA1c",
      "kind": "number",
      "hint": null,
      "default": 7,
      "unit": "%",
      "min": 4,
      "max": 16
    },
    {
      "id": "avgBg",
      "label": "Or your meter average",
      "kind": "number",
      "hint": null,
      "default": 154,
      "unit": "mg/dL",
      "min": 40,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "eag",
      "label": "Estimated average glucose (mg/dL)",
      "format": "decimal",
      "hint": null,
      "primary": true
    },
    {
      "id": "mmol",
      "label": "Average glucose (mmol/L)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "ifcc",
      "label": "IFCC A1C (mmol/mol)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "a1cFromBg",
      "label": "A1C implied by your meter average",
      "format": "decimal",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "HbA1c: 7 %",
      "Or your meter average: 154 mg/dL"
    ],
    "outputs": [
      "Estimated average glucose (mg/dL): 154",
      "Average glucose (mmol/L): 8.56",
      "IFCC A1C (mmol/mol): 53",
      "A1C implied by your meter average: 6.99"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter hba1c (%).",
      "Enter or your meter average (mg/dL).",
      "Read your estimated average glucose (mg/dl) on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "a1c": 4.2,
        "avgBg": 92
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "a1c": 7,
        "avgBg": 154
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "a1c": 11.200000000000001,
        "avgBg": 246
      }
    }
  ],
  "limitations": [
    "Population formulas describe averages; individual bodies vary, especially at the extremes of height, age, or muscle mass.",
    "Results do not account for medical conditions, medication, or pregnancy.",
    "Use this as a directional reference, not a diagnosis — talk to a clinician before acting on it."
  ],
  "faq": [
    {
      "q": "Why doesn't my meter average match my A1C?",
      "a": "Meters sample when you test, which skews toward fasting and pre-meal values. A1C reflects all 24 hours, including post-meal peaks."
    },
    {
      "q": "What A1C is diabetes?",
      "a": "6.5% or higher on two occasions; 5.7–6.4% is the prediabetes range. Diagnosis is your clinician's call."
    }
  ],
  "related": [],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — A1C to Average Glucose Converter (https://www.revenuelab.fyi/toolbox/a1c-to-glucose)"
}