Currencylayer

API

Real-time exchange rates & currency conversion API

Overview

Currencylayer is a RESTful API offering real-time exchange rates, currency conversion, historical rates, and time-series data for 168+ currencies. Key endpoints include /live (real-time rates), /convert (instant conversion), /historical (past rates), and /time-series (date range data). Responses are in JSON format. Ideal use cases: dynamic e-commerce pricing, financial tracking apps, travel budget calculators, and multi-currency accounting tools. It uses bank-grade data sources, with freemium and paid tiers for varying request limits and features like non-USD base currencies.

Example Integration (JavaScript)

script.js JS


fetch('https://currencylayer.com/documentation')
  .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 rate data
Currency conversion endpoint
Supports 168+ currencies
Time-series data

Frequently Asked Questions

? Is Currencylayer free to use?

Yes, it offers a free tier with 1000 requests/month, access to basic endpoints (live, convert), and USD as the base currency. Paid tiers unlock higher limits and advanced features like non-USD base currencies.

? Does it require an API Key?

Yes, all requests need an API key, which you can obtain by signing up for an account on Currencylayer.

? What is the response format?

All responses from Currencylayer are in JSON format, which is widely supported and easy to parse in most programming languages.

Top Alternatives

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Tool Info

Pricing Freemium

Category Currency Exchange

Platform Public API

Pros

⊕ Easy to integrate
⊕ Bank-grade data accuracy
⊕ Multiple endpoints for diverse needs
⊕ Freemium pricing available

Cons

⊖ Free tier limits to 1000 requests/month
⊖ Free tier restricted to USD as base currency
⊖ No SLA for free tier users