Is the Free Break-Even Unit & Revenue Calculator API free to use in production apps?

Yes! All FinCalculator REST APIs are completely free, zero-auth, open-CORS, and edge-cached for high performance across global web and mobile applications.

What is the rate limit for /api/v1/break-even?

Endpoints are cached at the edge for 24 hours. There are no restrictive rate limits for standard web traffic and mobile applications.

Business & SME APIWeb Calculator UI

Free Break-Even Unit & Revenue Calculator API (2026)

Business economics API to calculate break-even point in units and sales revenue.

Interactive API Playground & Live Test

GET/api/v1/break-even

Zero Auth • Open CORS

Query Parameters

fixedCostsnumber • required

Total fixed costs in ₹

unitPricenumber • required

Selling price per unit in ₹

unitVariableCostnumber • required

Variable cost per unit in ₹

curl -X GET "https://fincalculator.in/api/v1/break-even?fixedCosts=500000&unitPrice=1000&unitVariableCost=600" \
  -H "Accept: application/json"

Live JSON Response (HTTP 200 OK)

Click "Execute Live API Request" below...

Request Parameters Schema

Parameter	Type	Required	Description / Notes
fixedCosts	number	Required	Total fixed costs in ₹
unitPrice	number	Required	Selling price per unit in ₹
unitVariableCost	number	Required	Variable cost per unit in ₹

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