{
  "slug": "cost-per-engagement",
  "title": "Cost Per Engagement Calculator",
  "heading": "Cost Per Engagement (CPE) Calculator",
  "category": "financial",
  "url": "https://www.revenuelab.fyi/toolbox/cost-per-engagement",
  "summary": "What each like, comment, or save actually costs you.",
  "description": "CPE is the fastest way to compare a $500 nano creator against a $12,000 macro deal. Low CPE with a weak comment ratio usually means bought engagement, so read both numbers together.",
  "formula": "CPE = Spend ÷ Total engagements.",
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=cost-per-engagement",
  "inputs": [
    {
      "id": "spend",
      "label": "Total spend",
      "kind": "number",
      "hint": null,
      "default": 2500,
      "unit": "$",
      "min": 0,
      "max": null
    },
    {
      "id": "engagements",
      "label": "Engagements delivered",
      "kind": "number",
      "hint": null,
      "default": 6400,
      "unit": null,
      "min": 0,
      "max": null
    },
    {
      "id": "impressions",
      "label": "Impressions delivered",
      "kind": "number",
      "hint": null,
      "default": 210000,
      "unit": null,
      "min": 0,
      "max": null
    },
    {
      "id": "clicks",
      "label": "Link clicks",
      "kind": "number",
      "hint": null,
      "default": 1800,
      "unit": null,
      "min": 0,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "cpe",
      "label": "Cost per engagement",
      "format": "currency",
      "hint": null,
      "primary": true
    },
    {
      "id": "cpm",
      "label": "Effective CPM",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "cpc",
      "label": "Cost per click",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "er",
      "label": "Engagement rate on impressions",
      "format": "percent",
      "hint": null,
      "primary": false
    },
    {
      "id": "ctr",
      "label": "Click-through rate",
      "format": "percent",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Total spend: 2500 $",
      "Engagements delivered: 6400",
      "Impressions delivered: 210000",
      "Link clicks: 1800"
    ],
    "outputs": [
      "Cost per engagement: $0.391",
      "Effective CPM: $11.90",
      "Cost per click: $1.39",
      "Engagement rate on impressions: 3.05%",
      "Click-through rate: 0.86%"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter total spend ($).",
      "Enter engagements delivered.",
      "Enter impressions delivered.",
      "Enter link clicks.",
      "Read your cost per engagement 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": {
        "spend": 1500,
        "engagements": 3840,
        "impressions": 126000,
        "clicks": 1080
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "spend": 2500,
        "engagements": 6400,
        "impressions": 210000,
        "clicks": 1800
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "spend": 4000,
        "engagements": 10240,
        "impressions": 336000,
        "clicks": 2880
      }
    }
  ],
  "limitations": [
    "Results are estimates before tax, fees, and inflation unless an input explicitly covers them.",
    "Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.",
    "This is educational maths, not financial advice. Check anything contractual with the lender or your accountant."
  ],
  "faq": [
    {
      "q": "How does the cost per engagement (cpe) calculator work?",
      "a": "CPE is the fastest way to compare a $500 nano creator against a $12,000 macro deal. Low CPE with a weak comment ratio usually means bought engagement, so read both numbers together. The underlying maths is: CPE = Spend ÷ Total engagements."
    },
    {
      "q": "What do I need to enter?",
      "a": "4 values: total spend, engagements delivered, impressions delivered, and link clicks. Each field starts with a sensible default, so you can change one number at a time and watch the result move."
    },
    {
      "q": "What does the cost per engagement result mean?",
      "a": "It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds."
    },
    {
      "q": "Is this calculator free, and do I need an account?",
      "a": "Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser."
    },
    {
      "q": "How accurate is the result?",
      "a": "It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them."
    },
    {
      "q": "Who is this tool for?",
      "a": "It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/sponsorship-rate-card",
    "https://www.revenuelab.fyi/toolbox/influencer-roi"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Cost Per Engagement Calculator (https://www.revenuelab.fyi/toolbox/cost-per-engagement)"
}