Which is bigger the ounce or deciliter?

An ounce is 1/32 of a quart. A deciliter is 1/10 of a liter. A liter and a quart are very close to the same amount. Thus a deciliter is about 3 times more than an ounce. In other Words, a deciliter is about 3 ounces.

A converter I accessed gives 3.38 ounces, to be more exact.