One tablespoon of butter converted to gram equals to 14.18 g. How many grams of butter are in 1 tablespoon? The answer is: The change of 1 tbsp (tablespoon) unit in a butter measure equals = into 14.18 g (gram) as per the equivalent measure and for the same butter type.ind in: main menu • butter menu • Tablespoons. Work out grams in butter per 1 tablespoon unit. The butter converter for cooks, chefs, culinary arts classes, students and for home kitchen use.