15 grams.
You cannot convert grams to tablespoons from the information given; the former is a weight while the latter is a volume measurement therefore it will depend on what substance you are measuring as to...
It depends on what you are measuring. For water: 1 tablespoon = .5 oz = 28.35/2 = 14.17 grams. For Kosher salt: 1 tablespoon = 10 grams
100:)
Buy some scales and find out