To convert ounces to grammes multiply by 28.34952. I've generated some hopefully helpful examples randomly below, as with most random sentences please excuse the repetitive and occasionally comic outcomes.

How many grammes of salt are there in 440 ounces? Just multiply by 28.34952 to get the answer of 12473.79 grammes.

You've got 530 ounces of sugar but someone only wants to buy that in units of grammes, to change the units multiply by 28.34952. Now you have 15025.25 grammes.

In 460 ounces of pasta there are 13040.78 grammes, to achieve this take 460 and just multiply by 28.34952.