apilayer fixer.io

API

Real-time exchange rates & currency conversion API

Overview

apilayer fixer.io provides RESTful endpoints for real-time and historical exchange rates, currency conversion, time-series data, and fluctuation analysis. It sources data from 15+ reliable financial institutions, ensuring accuracy. Key endpoints include /latest (current rates), /convert (amount conversion), /historical/{date} (past rates), and /fluctuation (rate changes over time). Responses are in JSON format. Ideal for financial platforms, e-commerce sites (dynamic price conversion), travel apps (budget calculators), and analytics tools needing up-to-date or historical currency data.

Example Integration (JavaScript)

script.js JS


fetch('https://fixer.io')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON Response Format
Real-time Exchange Rates
Historical Data Access
Currency Conversion Endpoint
Fluctuation Analysis
Supports 170+ Currencies

Frequently Asked Questions

? Is apilayer fixer.io free to use?

Yes, it offers a free tier with 100 requests/month, access to real-time rates for 170+ currencies, and basic conversion features. Paid plans unlock higher limits and advanced tools like historical time-series data.

? Does it require an API Key?

Yes, all requests need an API key (available via free registration on fixer.io). The key is included as a query parameter in all API requests.

? What is the response format?

All responses are in JSON format, which is lightweight, human-readable, and easy to parse across most programming languages.

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Tool Info

Pricing Freemium

Category Currency Exchange

Platform Public API

Pros

⊕ Highly Reliable Data Sources
⊕ Easy-to-Use Endpoints
⊕ Scalable Plans (Free to Enterprise)
⊕ Comprehensive Documentation
⊕ Fast Response Times

Cons

⊖ Free Tier Has Rate Limits (100 requests/month)
⊖ Paid Plans Required for Unlimited Access
⊖ No XML Response Option
⊖ Advanced Features Locked Behind Higher Tiers