If The Dollar Is No Longer a Convertible Currency

What would actually happen if the U.S. Dollar would no longer be convertible into other currencies, as it is today?

Foreign counties would simply not accept it as part of commerce, as they do. They would insist on more stable currencies, such as the British Pound, the French or Swiss franc, the Russian ruble, or the Chinese yuan.

Some currencies, such as the Japanese yen, have not been used widely as international convertible currency, so they matter to a lesser extent. (See the Earl J. Weinreb NewsHole® comments and @BusinessNewshole at Twitter.)