Accurate, affordable currency exchange rate data built by developers, for developers.
Exchange Rate API exists to make currency data simple, reliable, and accessible. Too many exchange rate APIs are overpriced, poorly documented, or locked behind enterprise sales calls. We believe every developer — from a solo founder prototyping an idea to a team shipping a global fintech product — deserves access to accurate, real-time exchange rates without friction.
Our goal is straightforward: provide the most developer-friendly currency API on the market, backed by institutional-grade data, at a price that makes sense for projects of every size.
Accuracy matters when money is involved. Our exchange rates are sourced from Reuters/Refinitiv interbank feeds — the same data that powers institutional trading desks and major financial platforms worldwide.
We deliver mid-market rates, which represent the true midpoint between the buy and sell prices on the foreign exchange market. Unlike many competitors, we apply no markup, no spread, and no hidden fees to the rates we serve. What you get is the real interbank rate, updated every 60 seconds throughout the trading day.
Mid-market rates are the fairest representation of a currency's value. They are used as the reference rate by financial institutions, central banks, and international organizations like the IMF.
Exchange Rate API is built on Cloudflare Workers, running on a global edge network with points of presence in over 300 cities across 100+ countries. This architecture ensures that API responses are served from the location nearest to your users, resulting in consistently low latency.
We started Exchange Rate API because we were frustrated with the existing options. As developers building financial tools, we needed exchange rate data that was accurate, fast, and affordable. The options were either free APIs with unreliable data and no SLA, or enterprise products starting at hundreds of dollars per month with features we did not need.
So we built what we wished existed: a focused, well-documented API with institutional-quality data, transparent pricing, and SDKs that let you go from signup to your first API call in under a minute.
Every decision we make — from API design to pricing tiers — is informed by our own experience as developers who depend on third-party APIs every day.
Have questions, feedback, or partnership inquiries? We would love to hear from you.
Create a free account and start integrating real-time exchange rates in minutes.
Get Free API Key →