Finance & Conversion

Compound Interest API

Project savings growth with compound interest at annual, quarterly, monthly, or daily frequency.

Request Headers

Name	Required	Description
`X-RapidAPI-Key`	required	Your RapidAPI key. Get one free.
`X-RapidAPI-Host`	required	`compound-interest.p.rapidapi.com`

Endpoints

GET /v1/finance/interest

Compute compound interest growth over time

Parameters

Name	Type	Required	Default	Constraints
`frequency`	integer	optional	1	—
`principal`	number	optional	—	<= 1000000000000
`rate`	number	optional	—	<= 1000
`years`	number	optional	—	<= 1000

Code Examples

curl --request GET \
  --url 'https://compound-interest.p.rapidapi.com/v1/finance/interest?frequency=1&principal=0' \
  --header 'x-rapidapi-key: YOUR_API_KEY' \
  --header 'x-rapidapi-host: compound-interest.p.rapidapi.com'

const url = "https://compound-interest.p.rapidapi.com/v1/finance/interest?frequency=1&principal=0";
const options = {
  method: "GET",
  headers: {
    "x-rapidapi-key": "YOUR_API_KEY",
    "x-rapidapi-host": "compound-interest.p.rapidapi.com"
  }
};

const response = await fetch(url, options);
const data = await response.json();
console.log(data);

import requests

url = "https://compound-interest.p.rapidapi.com/v1/finance/interest"

querystring = {"frequency": 1, "principal": 0}

headers = {
    "x-rapidapi-key": "YOUR_API_KEY",
    "x-rapidapi-host": "compound-interest.p.rapidapi.com"
}

response = requests.get(url, headers=headers, params=querystring)

print(response.json())

GET /v1/finance/interest/frequencies

List all supported compounding frequencies (per year).

Code Examples

curl --request GET \
  --url 'https://compound-interest.p.rapidapi.com/v1/finance/interest/frequencies' \
  --header 'x-rapidapi-key: YOUR_API_KEY' \
  --header 'x-rapidapi-host: compound-interest.p.rapidapi.com'

const url = "https://compound-interest.p.rapidapi.com/v1/finance/interest/frequencies";
const options = {
  method: "GET",
  headers: {
    "x-rapidapi-key": "YOUR_API_KEY",
    "x-rapidapi-host": "compound-interest.p.rapidapi.com"
  }
};

const response = await fetch(url, options);
const data = await response.json();
console.log(data);

import requests

url = "https://compound-interest.p.rapidapi.com/v1/finance/interest/frequencies"

headers = {
    "x-rapidapi-key": "YOUR_API_KEY",
    "x-rapidapi-host": "compound-interest.p.rapidapi.com"
}

response = requests.get(url, headers=headers)

print(response.json())

Interactive Example

compound-interest

$ GET /v1/finance/interest?principal=1000&rate=5&years=10&frequency=12
{"final_amount":1647.01,"interest_earned":647.01}

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Developer Support

Need help integrating or have a custom endpoint request? Our engineering team is here to assist with authentication, payload schemas, and high-frequency rate limit increases.

Contact API Engineering

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