With this information, you can calculate the quantity of ounces 21 grams is equal to.
¿What is the inverse calculation between 1 ounce and 21 grams?
Performing the inverse calculation of the relationship between units, we obtain that 1 ounce is 1.3499773 times 21 grams.
Which is the same to say that 21 grams is 0.7407532 ounces.
Twenty-one grams equals to zero ounces. *Approximation
A ounce is one times twenty-one grams. *Approximation