Paypal is a great option that I've been learning about recently.
Here's a screenshot with a brief explanation from PayPal's website.
The link to read it yourself directly, and interact with the website you're seeing in the screenshot:
https://www.paypal.com/us/cshelp/article/how-do-i-convert-my-money-to-another-currency-in-paypal-help103
(copy and paste on your Chrome/Google search bar)