Top 10 Best Currency Converter APIs [34+ APIs Reviewed]

Currency is one of the most integral elements in the world of international trade and finances. With the world becoming a global village where anyone can engage in free trade, it has become vital for individuals to have avenues for exchanging and converting currencies. Although there are vast entities that offer these services, the availability of currency APIs has made it possible for developers to integrate currency, conversion, currency exchange, and a ton of other exciting capabilities into their websites and apps. This has made it easier for individuals and businesses to access currency rates and conversion services. If you are looking for the best currency APIs for your website or app, here are our top picks.

Related: How to use Currency API with Python

What is the best currency API?

After reviewing over 34 currency APIs, we found these 10 APIs to be the very best and worth mentioning:

• Currency Converter API
• currencylayer API
• Alpha Vantage API
• Currency Exchange API
• Currency Conversion and Exchange Rates API
• Fixer API
• Global Bitcoin Price Index API
• FCS API
• Real-time Currency Rates API
• Currency Rate Converter API API

Our Top 10 Best Currency APIs for 2021

Our Top Picks for Best Currency Converter APIs

1. Currency Converter API

The currency converter is one of the simplest currency conversion API that can be integrated into any app or website to convert one currency to the next.

API Features

The API supports over 150 currencies, with its data value being refreshed every 60 minutes. It boasts an easy to understand documentation. Data output is returned in the JSON data format for you to understand easily.

Currency Converter also boasts endpoints for listing countries, listing currencies, and sourcing historical currency data from the preceding year.

Pricing

Free Version with 100 requests per hour. The paid version starts from $5.

Popularity Score: 9.9/10

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Best ForConverting currency

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2. currencylayer API

Looking for an API that delivers reliable real-time currency exchange rates and currency conversions for up to 168 countries, Currencylayer has got you covered.

API Features

The API boasts data that is meticulously collected from renowned forex data providers and banks and curated algorithmically before being released to users.

It comes with five unique endpoints. These include the real-time exchange endpoint, convert endpoint for currency conversion, historical

Pricing

Free trial with 1,000 requests per month. Paid plans from as low as $9.99 per month.

Popularity Score: 6.2/10

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Best For Real-time exchange rates and conversion

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3. Alpha Vantage API

Alpha Vantage is the best API if you want to access real-time exchange rates for a pair of digital currency and physical currency.

API features

It offers 20 years of historical data in 4 different temporal resolutions that include daily, weekly, monthly, and intraday.

It also offers foreign exchange and currency exchange rates derived from the current trading day.

The API also delivers technical indicators, cryptocurrency, and sector performance data.

Pricing

Basic free plan with 500 requests daily. Premium plan starting from $39.99 per month for unlimited requests.

Popularity Score: 9.8/10

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Best For Real-time and historical equity data

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4. Currency Exchange API

This API allows you to access live currency exchange converter by providing a specific source and destination quotes.

API Features

Currency Exchange API supports several amounts of quotes from all over the world.

The API refreshes its data every 60 minutes.

It comes with a lot of information for easy integration with your app.

Pricing

The API offered free of charge.

Popularity Score: 9.9/10

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Best For Currency exchange calculations

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5. Currency Conversion and Exchange Rates

Simple reliable API for current and historical foreign exchange (foorex) rates.

API Features

Easily implement this API into your application to do localized currency, exchange rates, and more!

Includes multiple easy to understand endpoints.

Pricing

Free basic plan for trials. PRO Plan ($10), Ultra Plan ($25), and MEGA Plan ($50) provide higher quotas.

Popularity Score: 7.1/10

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Best For Curent and historical foreign exchange (forex) rates

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6. Fixer API

Sourcing information from more than 15 exchange rate data sources, the Fixer API delivers real-time exchange rate information for over 170 world currencies.

API Features

The API boasts multiple endpoints with distinct functionalities. These include the endpoint for querying the latest exchange rate data for several or selected currencies and another one for retrieving Time-Series data. You'll also find an endpoint for converting currencies, and another one for querying daily function data.

It comes with clear and straightforward documentation for easy integration.

Pricing

Free basic plan for trials. Premium plan starting from $10 monthly.

Popularity Score: 9.8/10

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Best For Delivering real-time exchange rate data

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7. Global Bitcoin Price Index API

This top-notch API prides in being the first global price index in the cryptocurrency and blockchain industry. The API offers historical bitcoin price data dating back from 2010. Individuals and businesses can use this index for payment processing, reporting, invoicing, accounting, and analysis.

API Features

Price rates for more than 165 countries. Rates that stretch back to 2010.

The API refreshes after 1 second giving users the real-time rates.

Pricing

Free basic plan. The premium plan starts at $12 per month.

Popularity Score: 8.9/10

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Best For Cryptocurrency exchange rates and historical data

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8. FCS API

Forex Crypto Stock (FCS) is a fascinating Forex API that delivers real-time and historical foreign exchange rates and technical indicators.

API Features

The API is powered by more than 25 exchange rate data sources. It provides time 145+ country and 2000+ Forex currencies. It also offers more than 5000 cryptocurrencies data and over 30 countries stock data.

Pricing

Free basic plan with 1000 requests per month. Premium plan starting from $45 for 100000 requests monthly.

Popularity Score: 7.9/10

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Best For Forex, stock and cryptocurrency data

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9. Real-time Currency Rates API

Want to integrate your website or app with an API that delivers current exchange rates for renowned currencies from all over the world, try the Real-time Currency Rates Overview API.

API Features

Provided exchange rates for a broad range of world currencies. It offers easy-to-integrate and accurate rates that can be used for reporting, pricing, and financial analysis.

The exchange rates are updated several times daily and are calculated from prominent global sources.

Pricing

Free basic plan. Premium version starting from $10, offering 100 requests monthly.

Popularity Score: 5.9/10

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Best For Real-time exchange rates for popular currencies

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10. Currency Rate Converter API

Currency rate converter is an easy-to-integrate API that provides your web visitors, international customers, and app users with accurate rates that they can use to convert major currencies from all over the world.

API Features

The API provides accurate and reliable exchange rates that can be used for pricing, financial analysis, and reporting.

Boasts an API-based solution that enables full customization of exchange rate strategies.

It features real-time exchange rates for more than 75 global currencies. Exchange rates offered by this API are updated several times daily and are formulated using data from renowned global sources.

Pricing

Free basic plan for those who want essentials to get started. Premium plans start from $10, offering 1000 requests monthly.

Popularity Score: 5.5/10

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Best For Exchange rates for converting local and global currencies

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Summary: Best Currency APIs for Developers

Complete List of the Best Currency APIs

• Alpha Vantage - The simplest and most effective way to receive both realtime and historical stock, FX, technical indicators, cryptocurrency, and sector performance data. Constantly ranked number one for ease of use, accuracy, and price.
• Bloomberg Market and Financial News - These APIs helps to query for all information about Indices, Commodities, Currencies, Futures, Rates, Bonds, etc… as on official website.
• Convert - A powerful unit conversion tool. Convert currency (using an up-to-date international currency feed). Convert most known measurement types: imperial, metric, mass, length, temperature, time (and more). The convertor will accept full unit names as well as abbreviations (e.g. millimeter and mm)
• Countries Cities - Provides geo location and information about countries and cities
• Crypto Asset Market Data Unified APIs For Professionals - FREE API key -> https://blockfacts.io/ <- 100s of pairs. Websocket & REST API. SDKs. Rich historic tick data for crypto currencies & exchanges..
• CryptoApiMonitor - CryptoApiMonitor allows you to monitor particular bitcoin addresses. Once transaction takes place you will be notified using callback parameter.
• Currency - 190+ Currencies Exchange Rates with minimum latency. If you need 10K and more request monthly with affordable price, contact us. https://nicesi.com/currency-exchange-rate-api/
• Currency - Check latest currency rate all countries in the world. Up to date, fast and reliable data.
• Currency - Accurate and reliable currency exchange rates for over 150 currencies
• Currency - Find currency and bitcoin prices.
• Currency Converter - Accurate and reliable currency exchange rates for over 150 currencies
• Currency Converter - Provides exchange rates based on the official banks data.
• Currency Exchange - Live currency and foreign exchange rates by specifying source and destination quotes and optionally amount to calculate. Support vast amount of quotes around the world.
• Currency Rate Converter - This API converts currency amounts from one global currency to another
• Currency Value - Get fast and reliable price conversion values.
• CurrencyConv - Currency conversion API
• currencylayer - Currencylayer provides an easy-to-integrate REST API with real-time and historical exchange rates for 168 world currencies and precious metals, delivered in lightweight and highly portable JSON format and compatible with any application, framework or language.
• CurrencyScoop - CurrencyScoop is a developer-friendly and enterprise-grade REST API which provides real-time , daily and historical exchange rates for 168 world currencies and precious metals, delivered in a JSON format and compatible with any application, framework or language.
• Evaluate expression - Multi-purpose natural language calculator
• FCS - Powered by 25+ currency exchange rate data sources. The FCS delivering real-time 145+ country and 2000+ Forex currencies. 5000+ Crypto Currencies data, and 30+ Countries stocks data.
• Find any IP address or Domain Location world wide - Free IP Geo Location API with 100% accurate geo information of IP address or Domain name like city latitude, longitude, zipcode, state/province, country, country codes, country flag, currency, dialing code. timezone, total number of cities & states/province in country, continent code, continent name and many more details in JSON format.
• Fixer Currency - Powered by 15+ exchange rate data sources, the Fixer API is capable of delivering real-time exchange rate data for 170 world currencies.
• Currency Conversion and Exchange Rates - Simple reliable API for current and historical foregin exchange (forex) rates.
• Global Bitcoin Price Index - GBX - BitcoinAverage.com is proud of the fact that we were the first global price index in the cryptocurrency and blockchain industry, and have proven over the years to also be one of the most reliable. It is considered by most as the de facto standard bitcoin price index.
• Global Ethereum Price Index - GEX - Ethereum Price Index supplied by BitcoinAverage
• Global Litecoin Price Index - GLX - Litecoin Price Index supplied by BitcoinAverage
• Hirak Currency Converter - Currency exchange, 162 currency, confidence data, up to date, unlimited requests, very fast response
• IP - Find location, country, region, city, flag, currency, timezone, AS of an IP address
• IP Geo Location - API returns location data such as country, city, latitude, longitude, timezone, asn, currency, security data for IPv4 and IPv6 addresses in JSON or XML formats.
• IP Geolocation by ipgeolocation.io - IP Geolocation API allows developers to get geolocation information for a given IP address.
• IP2Currency - IP2Currency Exchange Rate Web Service provides the user with an easy way to get a localized & latest Currency Exchange Rate based on the visitor's IP address.
• Nexchange - Nexchange is the planet's easiest and fastest way to exchange Cryptocurrency for individuals and businesses alike.
• Real-time Currency Rates - This API delivers real-time exchange rates for major currencies around the world.
• REST Countries - Get all countries information.

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