I also guessed that you want to convert from US measures (cups, tablespoons, pounds, ounces) to metric.
The main things you have to remember are:
1 pound (lb.) (US weight) = 454 grams
1 ounce (US weight) = 28 grams
1 stick of butter = 1/4 pound = a little more than 112 grams
1 quart (US volume) = a little less than 1 liter
1 pint (US volume) = a little less than 500ml
1 cup (US volume) = a little less than 250ml
1 ounce (US volume) = 30ml
1 tablespoon = 15ml
1 teaspoon = 5ml
3/4 teaspoon = about 4ml
1/2 teaspoon = 2.5ml
1/4 teaspoon = about 1ml
Unfortunately, American recipes don't very often use weights for dry ingredients, such as flour, sugar, etc. so you have to be sure that the "ounces" are volume, not weight. I know, this is confusing, and I wish we use metrics the way the rest of the world does. :(
Finally, don't worry about how you say it! We'll work together to figure it out, and help you if we can. That's what we're here for: to help each other. :D