I did not find a Squarespace currency converter extension that performed similarly to those found on other platforms so I built my own which supports more than 160 currencies, automatically detects the visitor's currency based on his/her location and supports all templates (including 7.1 templates).
You can check testimonials from a few of my customers here: https://shinypass.com/currencyconverter
I hope it may be useful to anyone coming across this thread who wants to increase their sales with a currency converter extension that automatically displays prices in the currency of your potential customer when he/she visits your website.
N.B.: Posted with permission from a Squarespace Forum Admin.
EDIT: just came across this thread again, just wanted to precise that ShinyPass was acquired in April 2022, i am no longer involved with it.
