How to create currency converter API?

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Is there an API for currency conversion?

Yes, there are several APIs available for currency conversion, such as ExchangeRate-API, Fixer.io, CurrencyLayer, Open Exchange Rates, and Exchangerate.host. These APIs allow you to fetch real-time and historical exchange rates.

How do I make a currency converter app?

You can create a currency converter app using programming languages like Python or JavaScript. Here’s a basic approach:

1. Use an API like ExchangeRate-API to get live exchange rates.
2. Create a front-end interface (using HTML, CSS, and JavaScript).
3. Use JavaScript’s Fetch API or Python’s requests module to get data from the API.
4. Display the converted amount based on user input.

Is ExchangeRate API free?

Yes, ExchangeRate-API offers a free tier with limited requests per month. However, for higher request limits and more features, they provide paid plans.

Does Google have a currency converter API?

No, Google does not provide a dedicated public API for currency conversion. While you can see currency conversion in Google search or Google Finance, there is no official API for developers.

How to create a currency converter API using Python?

To create your own currency converter API in Python:

1. Use Flask to create a simple web API.
2. Fetch exchange rates from a reliable source (e.g., ExchangeRate-API).
3. Create an endpoint that accepts parameters (e.g., amount, from_currency, to_currency).
4. Return the converted value in JSON format.

Example code snippet in Python (using Flask):

from flask import Flask, request, jsonify
import requests

app = Flask(__name__)

API_URL = "https://api.exchangerate-api.com/v4/latest/USD"

@app.route('/convert', methods=['GET'])
def convert_currency():
    amount = float(request.args.get('amount'))
    from_currency = request.args.get('from')
    to_currency = request.args.get('to')

    response = requests.get(API_URL).json()
    rates = response["rates"]

    if from_currency in rates and to_currency in rates:
        converted_amount = (amount / rates[from_currency]) * rates[to_currency]
        return jsonify({"converted_amount": converted_amount})
    
    return jsonify({"error": "Invalid currency code"}), 400

if __name__ == '__main__':
    app.run(debug=True)

How to create a currency converter API in JavaScript?

You can use Node.js and Express to create a simple currency conversion API. Here’s a basic example:

const express = require('express');
const fetch = require('node-fetch');

const app = express();
const API_URL = "https://api.exchangerate-api.com/v4/latest/USD";

app.get('/convert', async (req, res) => {
    const { amount, from, to } = req.query;
    const response = await fetch(API_URL);
    const data = await response.json();

    if (data.rates[from] && data.rates[to]) {
        const convertedAmount = (amount / data.rates[from]) * data.rates[to];
        res.json({ converted_amount: convertedAmount });
    } else {
        res.status(400).json({ error: "Invalid currency code" });
    }
});

app.listen(3000, () => console.log('Server running on port 3000'));

This API listens on port 3000 and converts currency using exchange rates.

What is a Forex API?

A Forex API provides real-time foreign exchange rate data. It allows developers to access forex market rates for use in financial applications, trading platforms, and currency conversion services.

How do I get a conversion API token?

To get an API token for a currency conversion service:

1. Register on a provider’s website (e.g., ExchangeRate-API, Fixer.io).
2. Verify your email if required.
3. Obtain your unique API key (token) from the dashboard.
4. Use the API key in your requests to authenticate.

Example API request:

https://v6.exchangerate-api.com/v6/YOUR-API-KEY/latest/USD

How to check if a conversion API is working?

You can check if your currency conversion API is working using:

• Postman: Send a test request to your API and check the response.
• cURL command: Run in the terminal: curl -X GET "https://api.exchangerate-api.com/v4/latest/USD"
• Web browser: Enter the API URL in the address bar and verify the JSON response.

Is there a free exchange rate API?

Yes, there are free exchange rate APIs with limited requests, such as:

• ExchangeRate-API (free for up to 1,000 requests/month)
• Exchangerate.host (free & open-source)
• Open Exchange Rates (free plan available)

For higher limits and additional features, most services offer paid plans.