Is there a free currency converter API?

Yes. CurrencyFreaks offers a free plan with 1,000 monthly API calls, rates for 1000+ currencies, SSL encryption and JSON/XML output, with no credit card required.

How often are exchange rates updated?

Refresh frequency depends on the plan: daily on Developer, hourly on Starter, every 10 minutes on Growth, and every 60 seconds on Professional and Enterprise.

How far back does the historical exchange rates API go?

Historical data goes back to 28 November 1984. You can pass any date in YYYY-MM-DD format to the historical endpoint, or use the time series endpoint to retrieve a full date range in a single request.

Is there a rate limit on API requests?

There is no daily or hourly throttle on any plan - only the monthly quota applies. Email notifications are sent at 80%, 90% and 100% of usage, and on the free plan when you reach your limit.

What formats does the CurrencyFreaks API support?

The REST API returns both JSON and XML, making it straightforward to integrate with any language or framework.

Fintech & Payments

CurrencyFreaks

Real-time exchange rates and currency conversion API for 1000+ currencies

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Votes: 0
DR (Ahrefs): 54 no change since last check

Domain Rating by Ahrefs, checked 3 Oct 2026, changed 3 Oct 2026.

Overview

A currency conversion API providing real-time and historical exchange rates for 1000+ currencies including fiat, cryptocurrencies and precious metals through a REST API.

Screenshot of the CurrencyFreaks homepage — A look at currencyfreaks.com

Q&A

Is there a free currency converter API?: Yes. CurrencyFreaks offers a free plan with 1,000 monthly API calls, rates for 1000+ currencies, SSL encryption and JSON/XML output, with no credit card required.
How often are exchange rates updated?: Refresh frequency depends on the plan: daily on Developer, hourly on Starter, every 10 minutes on Growth, and every 60 seconds on Professional and Enterprise.
How far back does the historical exchange rates API go?: Historical data goes back to 28 November 1984. You can pass any date in YYYY-MM-DD format to the historical endpoint, or use the time series endpoint to retrieve a full date range in a single request.
Is there a rate limit on API requests?: There is no daily or hourly throttle on any plan - only the monthly quota applies. Email notifications are sent at 80%, 90% and 100% of usage, and on the free plan when you reach your limit.
What formats does the CurrencyFreaks API support?: The REST API returns both JSON and XML, making it straightforward to integrate with any language or framework.

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Key features

Real-time exchange rates for 1000+ currencies
Currency conversion endpoint
Historical rates back to 1984
Time series endpoint
Fluctuation endpoint
IP-to-currency detection
JSON and XML response formats
SSL encryption on all requests
Multiple base currencies on paid plans
No daily or hourly rate throttling

Link metrics

Majestic link data for currencyfreaks.com; the arrow is the change since the previous check.

Trust Flow: 24; no change since last check
Citation Flow: 41; no change since last check
Referring domains: 777; no change since last check
External backlinks: 104,355; no change since last check

Top topic: Computers/Software/Internet (24). Checked 3 Oct 2026, changed 3 Oct 2026. Link data by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

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