How many grams of cream cheese are in 8 oz? There are about 227 grams in 8 ounces. It doesn't matter what the  substance is--cream cheese, meat, fish, etc.) because 8 ounces will  be 8 ounces no matter what you're wei … ghing.1 person found this useful.here are about 227 grams in 8 ounces. It doesn't matter what the  substance is--cream cheese, meat, fish, etc.) because 8 ounces will  be 8 ounces no matter what you're wei … ghing. 1 person found this useful.