Break-even point calculator API

Break-even units = fixedCosts / (price - variableCost), with contribution margin, break-even revenue, and margin of safety vs an expected volume — the canonical CVP formula, audited per factor. Answers 'how many units to break even', 'what's my break-even revenue', 'what's my margin of safety'.

Price$0.01per request

MethodPOST

Route/v1/calc/biz-break-even

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

calcbreak-evencvpcontribution-marginunit-economicsopspricingfinance

API URLhttps://x402.hexl.dev/v1/calc/biz-break-even

Integration docs

Example request

{
  "fixedCosts": 10000,
  "pricePerUnit": 50,
  "variableCostPerUnit": 30,
  "expectedUnits": 800
}

Example response

{
  "formula": "breakEvenUnits = fixedCosts / (pricePerUnit - variableCostPerUnit)",
  "contributionMarginPerUnit": 20,
  "contributionMarginRatio": 0.4,
  "breakEvenUnits": 500,
  "breakEvenRevenue": 25000,
  "inputs": {
    "fixedCosts": 10000,
    "pricePerUnit": 50,
    "variableCostPerUnit": 30
  },
  "expectedUnits": 800,
  "marginOfSafetyUnits": 300,
  "marginOfSafetyPercent": 37.5,
  "rating": "comfortable"
}

Input schema

{
  "type": "object",
  "required": [
    "fixedCosts",
    "pricePerUnit",
    "variableCostPerUnit"
  ],
  "properties": {
    "fixedCosts": {
      "type": "number",
      "examples": [
        10000
      ]
    },
    "pricePerUnit": {
      "type": "number",
      "examples": [
        50
      ]
    },
    "variableCostPerUnit": {
      "type": "number",
      "examples": [
        30
      ]
    },
    "expectedUnits": {
      "type": "number",
      "examples": [
        800
      ]
    }
  }
}

Output schema

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