Ounce in a measure of weight and fluid ounce is a measure of volume. Ounce is abbreviated as "oz" and a fluid ounce abbreviated "fl. Oz". Ounce is equal to 28.3495231 grams and fluid ounce is equal to 29.5735297 milliliters.

For details about their difference, visit this web link.

For details about their difference, visit this web link.