Rates of our cryptocurrency converter based on the data provided by cryptocurrency exchange markets in real-time. Remember the general rates aren't designed to be used for investment purposes.
The United States dollar is the official currency of the United States and its territories per the Coinage Act of 1792. It is a fiat currency and does not apply to cryptocurrencies.
Tether is a type of cryptocurrency that is referred to as a stablecoin and fully backed by the US dollar. You can always redeem 1 USD Coin for US $1.00, giving it a stable price.