Serving Sizes - How much is 1 serving?

Fruits: One serving of fruit is 1 cup of fruit or 100% fruit juice, or 1/2 cup of dried fruit. I know sometimes it can be tricky to decide what counts as a serving because fruit comes in so many different shapes and sizes. Just use these guidelines to estimate as correctly as you can.
            Generally, 1 serving of whole fruit = tennis ball
            1 serving of cut fruit = 7 cotton balls

Vegetables: One serving of vegetables is 1/2 cup raw or cooked veggies or vegetable juice or 1 cup leafy raw veggies.
            1 serving = 1/2 cup broccoli = a light bulb
            1 serving = 1/2 cup potato = a computer mouse

Protein: One serving equals 1 ounce of cooked lean meat, poultry or fish; 1/4 cup dried beans; 1 egg; 1 tablespoon of peanut butter or 1/2 ounce of nuts or seeds.
            3 ounces of fish = checkbook
            3 ounces of meat or poultry = deck of cards

Dairy: One serving equals 1 cup of milk or yogurt or 1.5 to 2 ounces of cheese.
            1 serving of cheese = 2 9-volt batteries

Fiber: One serving of fiber is 8-10 grams.
www.choosemyplate.gov
www.webmd.com {This one has some great visuals}
Standard Serving Sizes pdf