Is the Free Profit Margin 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/profit-margin?

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 Profit Margin Calculator API (2026)

Business profit margin analysis API.

Interactive API Playground & Live Test

GET/api/v1/profit-margin

Zero Auth • Open CORS

Query Parameters

revenuenumber • required

Gross revenue in ₹

cogsnumber • required

Cost of goods sold in ₹

curl -X GET "https://fincalculator.in/api/v1/profit-margin?revenue=1000000&cogs=600000" \
  -H "Accept: application/json"

Live JSON Response (HTTP 200 OK)

Click "Execute Live API Request" below...

Request Parameters Schema

Parameter	Type	Required	Description / Notes
revenue	number	Required	Gross revenue in ₹
cogs	number	Required	Cost of goods sold in ₹

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