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Tools.Town
Free Online Tools for Everyone

EMI Calculator API

Calculate your monthly EMI, total interest, and total payment for any loan — home, car, or personal.

Category: Calculators Endpoint: /v1/calculators/emi Method: GET Auth: API Key

Accurate Calculation

Get precise EMI and loan breakdown using the standard PMT formula.

Detailed Breakdown

Principal, interest, total payment and amortization details.

Easy Integration

Simple REST API with clean JSON response.

Developer Friendly

Clear docs, multiple SDK examples and fast response.

Endpoint

All requests should be made to the following endpoint:

GET https://api.tools.town/v1/calculators/emi

Authentication

This endpoint requires an API Key. Include your API key in the request header.

Authorization: Bearer YOUR_API_KEY
You can get your API key from your dashboard.

Request Parameters

Send a GET request with query parameters.

Parameter Type Required Description Example
principal number Loan principal amount. 500000
annualRate number Annual interest rate (%). 8.5
tenureMonths number Loan tenure in months. 60

Example Request

curl -G "https://api.tools.town/v1/calculators/emi" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  --data-urlencode "principal=500000" \
  --data-urlencode "annualRate=8.5" \
  --data-urlencode "tenureMonths=60"

Example Response 200 OK

application/json
{
  "success": true,
  "data": {
    "emi": "0",
    "totalPayment": "0",
    "totalInterest": "0",
    "principal": "0",
    "annualRate": "0",
    "tenureMonths": "0",
    "monthlyRate": "0"
  }
}

Error Codes

Code Meaning
400 Bad Request — missing or invalid parameter
401 Unauthorized — API key missing or invalid
429 Rate limit exceeded — free tier: 1,000 requests/month
500 Internal Server Error — try again or contact support