ExchangeRate-API Has a Free Endpoint — Get Live Currency Rates Without an API Key

Most currency APIs want your email, your credit card, and a monthly commitment before you can test a single rate. ExchangeRate-API has a free open endpoint that requires none of that. One URL. No key. 166 currencies. Updated daily. https://open.er-api.com/v6/latest/USD That's it. Call it right now from your terminal: curl https://open.er-api.com/v6/latest/USD You'll get back: { "result" : "success" , "base_code" : "USD" , "time_last_update_utc" : "Thu, 26 Mar 2026 00:02:31 +0000" , "time_next_update_utc" : "Fri, 27 Mar 2026 00:02:31 +0000" , "rates" : { "EUR" : 0.863827 , "GBP" : 0.747511 , "JPY" : 159.204596 , "CAD" : 1.380053 , "AUD" : 1.438717 , "CHF" : 0.791328 , "CNY" : 7.257342 , "INR" : 84.123456 } } 166 currencies in one request. No auth headers. No rate limit errors to handle. Change the base currency Swap USD for any supported currency code: curl https://open.er-api.com/v6/latest/EUR curl https://open.er-api.com/v6/latest/GBP curl https://open.er-api.com/v6/latest/JPY The res