US measures: 1 cup = 236.588 ml, 1 tablespoon = 14.787 ml, 1 teaspoon = 4.929 ml, 1 fluid ounce = 29.574 ml.
16 US tablespoons make 1 US cup.
No. A metric cup used in Australia, Canada and the UK is 250 ml, slightly bigger than the US cup at about 237 ml. This tool uses US customary measures.
Not directly, because grams measure weight and cups measure volume, and the weight depends on the ingredient (a cup of flour weighs about 120 g, a cup of sugar about 200 g).
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