By Dr. Rachel Kim · Published September 23, 2025 · 13 min read
The right healthy snacks for weight loss do two things at once: they satisfy hunger between meals and keep your total calorie intake on track. That balance is harder to achieve than it sounds — most grab-and-go options are calorie-dense, low in protein, and engineered to make you want more.
This list cuts through the noise. Every snack below clocks in under 100 calories and is backed by nutrition science to keep you full, energized, and on track.
⚠️ Medical Disclaimer
This article is for informational purposes only and does not constitute medical advice. Consult a registered dietitian or healthcare professional before making significant dietary changes, especially if you have a medical condition or are managing blood sugar.
What Makes a Weight-Loss Snack Actually Work?
A calorie ceiling of 100 is only part of the equation. The snacks that genuinely curb hunger share three qualities: protein, fiber, and adequate volume.
A comprehensive review published in Advances in Nutrition found that high-protein snacks (nuts, yogurt, legumes) significantly increased satiety and delayed the next meal by up to 60 minutes compared to high-carbohydrate snacks of identical calories. Fiber amplifies that effect by slowing digestion and feeding gut bacteria that regulate appetite hormones.
Volume matters too. Snacks with high water content — cucumbers, strawberries, watermelon — occupy more physical space in the stomach for very few calories. That stretch signal is a real hunger suppressor.
The framework: aim for snacks that include at least one of the following — 5g+ protein, 3g+ fiber, or very high water content. The best snacks hit two or three.
Quick Reference: Best Snacks at a Glance
| Snack | Calories | Protein | Fiber | Best For |
|---|---|---|---|---|
| ¾ cup nonfat Greek yogurt | ~100 cal | 18g | 0g | Protein, probiotics |
| ½ cup low-fat cottage cheese | ~98 cal | 14g | 0g | Sustained satiety |
| 3 oz canned light tuna | ~99 cal | 22g | 0g | Highest protein-per-calorie |
| 1 hard-boiled egg | ~78 cal | 6g | 0g | Portable, choline-rich |
| 3 cups air-popped popcorn | ~92 cal | 3g | 4g | High volume, whole grain |
| ½ cup edamame (shelled) | ~94 cal | 8g | 4g | Protein + fiber combo |
| 14 almonds | ~98 cal | 4g | 2g | Heart-healthy fats |
| 1 cup blueberries | ~85 cal | 1g | 4g | Antioxidants, natural sweetness |
| 1 cup baby carrots | ~52 cal | 1g | 3g | Very low calorie, crunchy |
| 2 oz deli turkey slices | ~62 cal | 12g | 0g | Lean, portable protein |
Fruit Snacks Under 100 Calories
Fruit delivers natural sweetness, vitamins, and fiber for remarkably few calories. The high water content of most fruits also means a large volume for a small calorie cost — a key advantage for weight loss.
1. 1 cup blueberries — 85 calories One of the most antioxidant-dense foods per calorie. Blueberries provide 4g of fiber and are rich in resveratrol, which supports metabolic health. They're also one of the lowest-sugar berries, making them a reliable snack without blood sugar spikes.
2. 1 cup strawberries — 49 calories At just 49 calories per cup, strawberries give you exceptional volume for minimal energy. One cup delivers your full daily vitamin C requirement and 3g of fiber. Eat them whole for maximum satisfaction.
3. 1 cup watermelon chunks — 46 calories Watermelon is 92% water, making it one of the highest-volume, lowest-calorie snacks you can eat. A full cup of chunks satisfies the desire for something cold and sweet at essentially no caloric cost.
4. 1 medium apple — 95 calories Apples offer 4g of fiber, primarily pectin, which forms a gel in the digestive tract that slows gastric emptying. A 2015 randomized study found that eating a whole apple before a meal reduced subsequent calorie intake by 15%, more than apple juice or applesauce.
5. 2 kiwis (peeled) — 84 calories Kiwis contain natural serotonin precursors and have been studied for improving sleep quality — useful for weight management since sleep deprivation disrupts hunger hormones. They also provide 4g of fiber and more vitamin C per gram than oranges.
6. 1 cup grapes — 62 calories Grapes provide a combination of natural sweetness and hydration at 62 calories per cup. Their resveratrol content has anti-inflammatory properties. Freeze them for a more satisfying texture and slower eating pace.
7. 1 medium peach — 59 calories Peaches are an underrated weight-loss fruit: sweet, juicy, and low-calorie. One medium peach provides vitamins A and C, potassium, and 2.3g of fiber. Their high water content makes them particularly filling relative to their calorie count.
Vegetable Snacks Under 100 Calories
Vegetables are the ultimate weight-loss snack category. Many are so low in calories that portion size barely matters — you can eat an entire cup for fewer calories than most bites of processed food.
8. 1 cup cucumber slices — 16 calories Cucumbers are 95% water. At just 16 calories per cup, they provide satisfying crunch and volume with almost no caloric impact. Pair with 3 tablespoons of hummus for a protein-and-fiber combo that stays under 100 calories.
9. 1 cup celery sticks — 14 calories Celery is essentially calorie-free at 14 calories per cup. The mechanical effort of chewing dense celery contributes to satiety signals beyond the calorie count. Fill the grooves with a small amount of almond butter for a more substantial snack.
10. 1 cup baby carrots — 52 calories Carrots provide 3g of fiber and are rich in beta-carotene, which the body converts to vitamin A. Their firm texture requires substantial chewing, which slows eating pace and supports satiety. They're also portable and require zero preparation.
11. 1 cup cherry tomatoes — 27 calories Cherry tomatoes are loaded with lycopene, an antioxidant associated with reduced inflammation. At 27 calories per cup, they're one of the lowest-calorie satisfying snacks available. Pop them straight from the container.
12. 1 cup sliced bell peppers — 31 calories Bell peppers contain more vitamin C per gram than any citrus fruit. Red, yellow, and orange varieties have a natural sweetness that makes them enjoyable without dip. Three ounces of sliced peppers with 2 tablespoons of salsa costs about 40 calories total.
13. ½ cup edamame (shelled) — 94 calories Edamame is the standout plant-based snack: 8g of complete protein and 4g of fiber for 94 calories. A 2020 study published in Nutrients confirms that snacks combining protein and fiber deliver the greatest satiety per calorie. Edamame nails both.
High-Protein Snacks Under 100 Calories
Protein is the most satiating macronutrient. It reduces levels of ghrelin (the hunger hormone) and increases peptide YY, which signals fullness to the brain. Prioritizing protein in your snacks makes staying under your daily calorie target noticeably easier.
For a deeper look at how much protein your body actually needs, see our guide on daily protein requirements.
14. 3 oz canned light tuna — 99 calories The single highest-protein snack on this list: 22g of protein per 99 calories. Canned light tuna in water is also one of the most affordable protein sources available. Eat it plain, with mustard, or on cucumber rounds.
15. ¾ cup nonfat Greek yogurt — 100 calories Greek yogurt provides 18g of protein per ¾ cup, plus live probiotic cultures that support gut health and have been linked to reduced body weight in clinical research. Choose plain varieties and add berries if you want sweetness without added sugar.
16. ½ cup low-fat cottage cheese — 98 calories Cottage cheese delivers 14g of slow-digesting casein protein per half cup — the same protein type in most overnight protein shakes. It's particularly effective as a late-night snack because casein is digested gradually over several hours, reducing overnight hunger.
17. 1 hard-boiled egg — 78 calories A single hard-boiled egg provides 6g of complete protein, all essential amino acids, and choline — a nutrient most people don't get enough of. Hard-boiled eggs are portable, require no refrigeration for a few hours, and take two minutes to prepare in bulk.
18. 2 oz sliced deli turkey — 62 calories Deli turkey is 12g of protein at just 62 calories. Roll slices around cucumber sticks or bell pepper strips for a zero-carb, protein-forward snack. Look for low-sodium varieties to keep the salt in check.
19. 1 oz beef or turkey jerky — ~80 calories Quality jerky provides 10g+ of protein in a shelf-stable, portable format. Check labels carefully — many brands add significant sugar. Look for jerky with fewer than 5g of sugar per serving and minimal additives.
20. 1 oz part-skim mozzarella string cheese — 80 calories String cheese delivers 7g of protein and 200mg of calcium per stick at 80 calories. The act of peeling it strand by strand naturally slows eating pace. It's one of the most convenient portable protein snacks available.
Dairy and Egg Snacks Under 100 Calories
21. 1 oz reduced-fat cheddar — 70 calories One ounce of reduced-fat cheddar provides 7g of protein and over 200mg of calcium at just 70 calories. Pair with a few apple slices for a protein-fiber combination under 100 calories.
22. 1 cup bone broth — 47 calories A warm cup of beef bone broth provides roughly 10g of collagen protein at just 47 calories. The warmth activates stretch receptors in the stomach and provides a calming ritual — particularly effective for managing evening snack cravings.
Nuts, Seeds, and Crunch Snacks Under 100 Calories
Nuts are calorie-dense, so portions matter here — but their protein, fiber, and healthy fat content make even small amounts highly effective for satiety.
23. 14 almonds — 98 calories Fourteen almonds provide 4g of protein, 2g of fiber, and significant vitamin E. Research suggests that the rigid cell walls of almonds trap about 20% of their fat, meaning the body absorbs slightly fewer calories than the label states.
24. 20 pistachios — 80 calories Pistachios are unique: they come in shells. The physical act of opening each shell slows eating and creates a visible pile that reinforces the sense of having eaten something substantial. Twenty pistachios provide 3g of protein and 1.5g of fiber.
25. 10 walnut halves — 99 calories Walnuts are the only tree nut with a significant source of plant-based omega-3 fatty acids (ALA). Ten halves provide anti-inflammatory fats that support cardiovascular health as part of a balanced diet.
26. 3 cups air-popped popcorn — 92 calories Three cups of air-popped popcorn (no oil, no butter) deliver an enormous volume of food for 92 calories. Popcorn is a whole grain with 4g of fiber per serving. Its bulk makes it one of the most psychologically satisfying low-calorie snacks — you're eating for a long time.
Smart Combination Snacks Under 100 Calories
Pairing foods from different categories creates synergy: carbohydrate for quick energy, protein and fat for lasting satiety.
27. 3 tbsp hummus + cucumber sticks — ~70 calories Hummus provides chickpea protein and tahini fat; cucumber provides volume and hydration. Together they hit protein, fiber, and healthy fat for around 70 calories. This is one of the most nutritionally complete snacks under 100 calories.
28. 1 plain rice cake + 1 tsp peanut butter — ~99 calories The rice cake delivers light crunch and carbohydrate; the peanut butter adds protein, fat, and flavor. It's a simple, satisfying combination that feels more like a mini-meal than a snack.
29. 2 tbsp guacamole + bell pepper strips — ~95 calories Guacamole provides monounsaturated fat from avocado — the same fat that makes the Mediterranean diet effective. Paired with bell pepper strips, this snack delivers vitamin C, healthy fats, and fiber in a colorful, satisfying combination.
30. ½ cup roasted chickpeas — ~80 calories Roasted chickpeas provide 5g of protein and 6g of fiber in a crunchy, portable format. They satisfy the craving for something salty and crispy — a niche occupied by chips — while contributing real nutritional value. Make them at home with olive oil and spices, or buy pre-packaged versions without added sugar.
When You Snack Matters Too
Beyond what you eat, research suggests that timing affects weight loss outcomes. A 2011 study in the Journal of the American Dietetic Association followed 123 women through a 12-month weight-loss intervention and found that mid-morning snackers lost significantly less weight (7.0%) than non-mid-morning snackers (11.4%). The implication: snacking when you're not genuinely hungry can displace the calorie savings you're trying to create.
The most effective approach is to snack in response to real hunger, not boredom or habit, and to plan your snacks rather than reaching for whatever is available. Understanding your total daily calorie needs and how snacks fit into your calorie deficit for weight loss gives your snacking purpose.
For more guidance on managing meal volume and portions throughout the day, see our portion sizes guide.
ℹ️ Snack Planning Tip
Pre-portion your snacks at the start of the day. People who portion snacks in advance consume significantly fewer calories from snacks overall — the effort of re-portioning mid-craving is enough friction to prevent mindless eating.
Build Your Snack Strategy
Track What You're Actually Eating
Knowing the calorie count of these snacks is one thing — tracking whether you're actually staying on target is another. Portion drift is real: a "handful" of almonds can range from 14 to 40 nuts depending on the day.
Caloria makes it effortless — snap a photo of your snack and get an instant calorie and macro breakdown. No manual entry, no guesswork. It's the fastest way to see whether your snacking habits are supporting your weight loss goals or quietly working against them.
Download Caloria and see exactly what you're eating:
Frequently Asked Questions
What snacks are under 100 calories and filling?
The most filling snacks under 100 calories combine protein and fiber: ¾ cup nonfat Greek yogurt (18g protein), 1 hard-boiled egg (6g protein), ½ cup cottage cheese (14g protein), and 3 cups air-popped popcorn (4g fiber). Protein and fiber slow digestion and suppress hunger hormones more effectively than carbohydrate-only snacks.
Are 100-calorie snacks good for losing weight?
Yes, when chosen wisely. Research published in Advances in Nutrition found that high-protein, high-fiber snacks significantly increase satiety and delay subsequent meal intake. The key is choosing whole-food snacks — Greek yogurt, eggs, vegetables — not packaged "100-calorie packs," which are typically low in protein and fiber.
What is the best late-night snack under 100 calories?
The best late-night options are protein-rich and easy to digest: ¾ cup nonfat Greek yogurt, 1 oz string cheese, ½ cup cottage cheese, or 1 hard-boiled egg. Protein at night supports muscle repair during sleep without spiking blood sugar.
How many snacks a day should you have when losing weight?
What matters is total daily calories, not snack frequency. Most people do well with one or two planned snacks to prevent overeating at mealtimes. Listen to actual hunger rather than snacking on a fixed schedule.
What high-protein snacks are under 100 calories?
Top high-protein options: 3 oz canned light tuna (99 cal, 22g protein), ¾ cup nonfat Greek yogurt (100 cal, 18g protein), ½ cup cottage cheese (98 cal, 14g protein), 2 oz deli turkey (62 cal, 12g protein), 1 hard-boiled egg (78 cal, 6g protein).