LTV:CAC ratio calculator API

Compute LTV = ARPA * grossMargin * lifetimeMonths (lifetime from 1/churnRate or supplied directly) and the LTV:CAC ratio plus CAC payback, with the >=3x health benchmark. Answers 'what's my LTV to CAC ratio','is my unit economics healthy','how long to pay back CAC'.

Price$0.01per request

MethodPOST

Route/v1/calc/mkt-ltv-to-cac

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

calcmarketingltvcacunit-economicschurnsaasmetrics

API URLhttps://x402.hexl.dev/v1/calc/mkt-ltv-to-cac

Integration docs

Example request

{
  "arpa": 60,
  "grossMargin": 0.8,
  "churnRate": 0.03,
  "cac": 400
}

Example response

{
  "formula": "LTV = ARPA * grossMargin * lifetimeMonths; ratio = LTV / CAC",
  "arpa": 60,
  "grossMargin": 0.8,
  "lifetimeMonths": 33.33,
  "ltv": 1600,
  "cac": 400,
  "ltvToCac": 4,
  "paybackMonths": 8.33,
  "rating": "healthy (>=3x)"
}

Input schema

{
  "type": "object",
  "required": [
    "arpa",
    "grossMargin",
    "cac"
  ],
  "properties": {
    "arpa": {
      "type": "number",
      "description": "avg revenue per account per period",
      "examples": [
        60
      ]
    },
    "grossMargin": {
      "type": "number",
      "description": "decimal in [0,1]",
      "examples": [
        0.8
      ]
    },
    "churnRate": {
      "type": "number",
      "description": "per-period churn decimal in (0,1]; sets lifetime = 1/churn",
      "examples": [
        0.03
      ]
    },
    "lifetimeMonths": {
      "type": "number",
      "description": "alternative to churnRate",
      "examples": [
        33.33
      ]
    },
    "cac": {
      "type": "number",
      "examples": [
        400
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}