There are 14.3 grams in a tablespoon. Since grams and tablespoons are different measurements, it is difficult to precisely convert one to the other without knowing the exact ingredient. Grams measure how much an object weighs, while tablespoons measure the volume that an object takes up.
Different ingredients can have different weights; therefore, the exact number of grams in a tablespoon depends on the weight of the ingredient. For example, a teaspoon of sugar is about 4 grams. Teaspoons and tablespoons can be converted easily. Three teaspoons equals 1 tablespoon, which means that 1 tablespoon equals about 4 x 3 grams of sugar, or 12 grams.