How Big is One Serving? Use everyday objects as a guide

Cara Stewart, RD, LDN, member of the Penn Metabolic and Bariatric Surgery team, provides everyday objects as a guide for standard serving sizes of common food items.

Today, portion sizes are notoriously larger than ever before. With restaurants serving super-sized meals and food packages often containing more than one serving, it can be difficult to figure out how much you are eating. Uncertainty about portion size is particularly problematic when trying to lose or manage weight. For successful weight loss, it is essential to know and keep track of your food intake. Use these comparisons to everyday items as a guide to standard serving sizes of common foods.

• 3 oz. of meat = A deck of cards
• 3 oz. of fish = A checkbook
• 1 ½ oz. of cheese = 3 dice
• 2 tbsp. peanut butter = A ping pong ball
• 1 medium-sized fruit = A baseball
• 1 cup of cooked vegetables = A baseball
• 1 medium potato = A computer mouse
• 1 cup pasta = A baseball
• 1 bagel = A hockey puck
• ½ cup of ice cream = A light bulb
• 1 tbsp. butter or oil = A poker chip

- Cara Stewart, RD, LDN