How much is $1 Canadian to US $1?

Could you please clarify the question? It seems to be asking for the exchange rate between the Canadian dollar and the US dollar, but the phrasing "$1 Canadian to US $1" is a bit confusing. Are you asking what the current exchange rate is for converting 1 Canadian dollar into US dollars? If so, the answer would vary depending on the current market conditions and the exchange rate at the time of the transaction. However, typically, the exchange rate is not exactly 1:1, so 1 Canadian dollar would not equal exactly 1 US dollar.