How many dry ounces are in one fluid ounce?

1 fl oz = 1.111 dry oz
One; fl oz (fluid ounce) measures volume and liquid such as lemonade; oz (ounce) may refer to a dry ounce measuring solids such as garlic.
1oz
A fluid ounce is a measurement of volume whereas an ounce is a measurement of weight. As such, there is no general conversion rate.