$WOOCS->back_convert()

Useful function when you want to convert any amount in non-basic currency into basic currency amount. For example you have 40GBP. Basic currency of your shop is EUR, to convert that 40GBP into XX EUR you are need do next:

global $WOOCS;
$res=$WOOCS->back_convert(40,0.8343,2);

40 - amount in GBP
0.8343 - rate of 1 GBP relatively to 1 EUR. Currency rate can be get by the next function: $WOOCS->get_currencies()
2 - decimals in the result value $res

Shortcodes, functions, actions and filters reference for FOX WooCommerce Currency Switcher