API Access — FX Rate Live | Currency Exchange Rate Data for Developers
API Access — Currency Data for Your App
Need live exchange rate data for a website, app, or business system? This guide covers the best free and paid currency data APIs, how they work, and how to integrate them — explained for developers and non-developers alike.
What Is a Currency Rate API?
An API (Application Programming Interface) is a way for software systems to talk to each other. A currency rate API is a service that delivers live exchange rate data to your website or application automatically, without you having to manually look up and update rates.
Instead of visiting a website to check a rate, your software sends an automated request to the API and receives the current rate back as data. This happens in milliseconds. The result is that your app always shows the current rate without anyone having to update it manually.
Currency APIs are used by travel booking websites that show prices in local currencies, e-commerce stores that display product prices in multiple currencies, finance apps that track portfolio values, remittance platforms that show transfer rates, and thousands of other applications where accurate, up-to-date exchange rates matter.
FX Rate Live does not currently offer a proprietary API. Our rates are sourced from public financial data providers. If you need exchange rate data for a development project, we recommend the free public APIs listed below — they are the same quality sources we use ourselves. For questions about data usage, contact hello@fxratelive.in.
Best Currency Rate APIs Available
These are the most reliable, well-documented currency rate APIs available today. We have listed them in order of ease-of-use for beginners.
Simple Code Examples
Here are working code examples using the free Frankfurter API. No API key needed — these work immediately.
JavaScript (Fetch API)
// Get live USD to INR rate
fetch('https://api.frankfurter.app/latest?from=USD&to=INR')
.then(res => res.json())
.then(data => {
const rate = data.rates.INR;
console.log('1 USD = ' + rate + ' INR');
})
.catch(err => console.error('Rate fetch failed:', err));
Python
import requests
response = requests.get(
'https://api.frankfurter.app/latest',
params={'from': 'USD', 'to': 'INR'}
)
data = response.json()
rate = data['rates']['INR']
print(f'1 USD = {rate} INR')
Convert Multiple Currencies at Once
// Multiple currency conversion in one request
fetch('https://api.frankfurter.app/latest?from=USD&to=EUR,INR,JPY,SAR,AED')
.then(res => res.json())
.then(data => {
console.log('USD rates:', data.rates);
// Returns: { EUR: 0.92, INR: 86.0, JPY: 150, SAR: 3.75, AED: 3.67 }
});
Get Historical Rate for a Specific Date
// Get USD/INR rate on a specific date
fetch('https://api.frankfurter.app/2020-03-15?from=USD&to=INR')
.then(res => res.json())
.then(data => {
console.log('USD/INR on 15 March 2020:', data.rates.INR);
});
All Frankfurter API responses return clean JSON with an amount, base currency, date, and rates object. The date field shows the last business day (APIs only return rates on trading days). Full documentation is available at frankfurter.app/docs.
What People Build With Currency APIs
API Access — Questions Answered
FX Rate Live does not endorse or guarantee any third-party API services listed on this page. API availability, pricing, and terms of service may change. Always review the terms of any API service before integrating it into a production application. FX Rate Live is not responsible for any costs, errors, or issues arising from the use of third-party APIs.
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