100-Calorie Snacks

Snacks That Measure Up continued...

"The palm of the hand is usually a 3-ounce serving; a tablespoon is about the size of the last digit on your thumb; and if it's a long item, like string cheese, an ounce is about the length of your forefinger," says Wilson.

"Most restaurant portions are two to three times what a true single-serving portion is, particularly if you are buying a sweet treat, so keep that in mind when ordering," Wilson tells WebMD. One temptation it's usually best to avoid, she says, is buying snacks from a vending machine.

"Unless that machine is stocking fruit, I can guarantee it's almost always going to be over 100 calories -- and probably not very healthy," says Wilson.

100 Calorie Snacks: 20 Choices

Need some ideas? To get you started on the road to calorie-controlled snacking, our experts offer some suggestions for healthy 100-calorie munchies:

1. Half an apple with 2 teaspoons of peanut butter
2. An orange and a few dry-roasted nuts
3. 10 cashew nuts
4. 10 almonds
5. 2 ounces of lean roast beef
6. Half a small avocado
7. 3 ounces cooked whole-grain noodles with 1 fresh tomato and 1/2 ounce hard cheese
8. 1 seven-grain Belgian waffle
9. 4 mini rice cakes with 2 tablespoons low-fat cottage cheese
10. 3 ounces low-fat cottage cheese and 3 whole-wheat crackers
11. 1/4 cup fat-free ranch dressing with mixed raw veggies
12. 6 Wheat Thins crackers with two teaspoons of peanut butter (or any nut butter)
13. 1 small baked potato with 1/2 cup salsa and 2 tablespoons of fat-free sour cream
14. 1/3 cup of unsweetened applesauce with 1 slice of whole-wheat toast, cut into 4 strips for dunking
15. 1/2 cup frozen orange juice, eaten as sorbet
16. 2 large graham cracker squares with 1 teaspoon peanut butter
17. 3 handfuls of unbuttered popcorn, seasoned with herbs
18. 4-6 ounces of no-fat or low-fat yogurt
19. A 5-ounce tossed salad with lettuce, tomato, cucumber and 1/4 cup fat-free dressing
20. Half a "finger" of string cheese with 4 whole-wheat crackers