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How to Create Currency Conversion API Based Web Using Python Flask

Currency is one of the significant critical components in international trade and finances. It has become crucial for individuals to have avenues for exchanging and converting currencies. Here in this brief tutorial, you will learn how to create a currency conversion API web app using Python Flask and integrating an API.

If you are looking for the best currency APIs for your website or application, the CurrencyLayer API is the best option for Real-time exchange rates and conversion services.

With just one universal exchange rate API, you can access 168 world currencies and precious metals. 

  • Reliable Forex Rates
    • Accurate Exchange Rates for 168 World Currencies with data updates ranging from every 60 minutes down to stunning 60 seconds.
  • Easy-to-integrate API
    • Delivered in portable JSON format for maximum usability, ease of integration, and compatibility with any of your applications.
  • Advanced Features
    • Gain access to historical rates, have our API convert single amounts for you, get a currency’s change parameters, switch Source Currency, etc.
currency conversion

Can I Empower Apps With Forex Data?

CurrencyLayer API Forex data powers currency converters, mobile apps, and office systems worldwide. You can easily integrate the service into any application you have. Here are examples of how you can get the data.

Do You Need More On API Endpoints?

The CurrencyLayer API offers up to 5 customizable endpoints, all of which provide different kinds of data. Below you will find a summary of all available endpoints. 

Moreover, you can specify

For both live and historical rates, you may limit your API request to a set of specific currencies by attaching the currencies parameter followed by any available 3-letter currency codes of your choice.

Here is a response example that you can get:

How To Create A Python Flask App?

We build a Python Flask web app that utilizes this CurrencyLayer API. By this, you can learn how to integrate and interact with the endpoints.

Start your PowerShell or Bash and type these commands to create a new folder and initialize a new Python Flask application.

Here I’m using VS Code to code, and we have already opened it with the “code .” command. Now copy this source code to your app.py and use HTML web pages for data representation (you can find them from this GitHub repository [1])

As you can see, we have two simple endpoint calling functions and two functions to represent the received data to the user. It is straightforward. It gets the submitted data, builds up a URL string, and sends it as a request.

How To Run Our CurrencyLayer API-based Flask Web Application?

Depending on the configuration of your system, you can run your Flask web application with these commands. 

Demo in Action!

Fill out the form by giving what you want to convert
Conversion Result
Find specific rates

Get your free subscription API key right now! Head over to the CurrencyLayer!

[1] https://github.com/MuminjonGuru/CurrencyLayerWithFLask/blob/main/app.py

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