Peanut butter nutrition facts and analysis per 1 tablespoon (16.0 g) ... Foods related to peanut butter There are 94 calories in 1 tablespoon of Peanut Butter . Get full nutrition facts and other common serving sizes of Peanut Butter including 100 g. There are 94 calories in 1 tablespoon of Peanut Butter . Get full nutrition facts and other common serving sizes of Peanut Butter including 1 serving and 100 g. The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.