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

If you're building anything with international payments, e-commerce, or travel — you need currency exchange rates. Most APIs charge for this data or require complicated OAuth flows. ExchangeRate-API gives you free, up-to-date exchange rates with zero signup. Try It Right Now curl https://open.er-api.com/v6/latest/USD Response (truncated): { "result" : "success" , "base_code" : "USD" , "time_last_update_utc" : "Wed, 26 Mar 2026 00:00:01 +0000" , "rates" : { "EUR" : 0.9234 , "GBP" : 0.7891 , "JPY" : 149.85 , "CAD" : 1.3612 , "AUD" : 1.5423 , "CHF" : 0.8812 , "CNY" : 7.2456 } } 160+ currencies. Updated daily. No key needed. Python Example: Currency Converter import requests def convert ( amount , from_currency , to_currency ): url = f " https://open.er-api.com/v6/latest/ { from_currency } " data = requests . get ( url ). json () if data [ " result " ] != " success " : return None rate = data [ " rates " ][ to_currency ] converted = round ( amount * rate , 2 ) print ( f " { amount } { from