Let me be honest: there’s no such thing as a truly zero calorie food. Even water has technically zero calories, but if we’re talking about actual snacks—things you can munch on—everything has at least a few calories. But here’s the thing: there are plenty of foods that have SO few calories that they’re essentially “free” in terms of your calorie budget.
Ten months into eating in a 500 calorie deficit and burning an additional 150 calories through exercise, I’ve learned that having a list of virtually zero calorie snacks is essential for those moments when I’m not actually hungry but I want to munch on something. You know those times—maybe you’re bored, maybe you’re watching TV, maybe everyone else is eating and you want to join in without blowing your calorie budget.
At 50, with a mostly sedentary lifestyle (though I aim for 10k steps daily), every calorie counts toward my daily budget. Having snacks I can eat freely without logging every single calorie has been a game-changer for my sanity and success.
Let me share my favorite “zero calorie” snacks—or more accurately, snacks that are so low in calories that you can eat them without significantly impacting your deficit.
What Qualifies as a “Zero Calorie” Snack?
For the purposes of this article, I’m defining zero calorie snacks as foods that have:
- Less than 10 calories per serving
- OR foods where a large volume has minimal calories (like 50 calories for 3 cups)
- Foods you can munch on without needing to meticulously log every bite
These are the snacks I reach for when:
- I’ve used most of my calories for the day but want something to eat
- I’m not truly hungry but want the experience of eating
- I want volume without calories
- I’m in social situations where everyone else is snacking
I still log these in Cronometer if I’m eating a significant amount, but I don’t stress about them the way I do with my low calorie snacks that have more substantial calories.
My Favorite Zero Calorie Snacks
Cucumber Slices
Calories: About 16 calories per whole cucumber
A whole cucumber sliced up gives you a massive amount of food for almost no calories. I eat cucumber slices plain, with a sprinkle of salt, with everything bagel seasoning, with a splash of rice vinegar, or with hot sauce.
Sometimes I cut them into sticks for dipping into salsa (salsa is also essentially zero calorie—about 5 calories per tablespoon). This is my go-to evening snack when I’ve used all my calories but still want to munch while watching TV.
Why it works: Pure volume. You can eat an entire cucumber and barely make a dent in your calorie budget. It’s crunchy, hydrating, and satisfying the urge to munch without adding significant calories.
Celery Sticks
Calories: About 6 calories per stalk
Celery is probably the most famous “zero calorie” food because it’s mostly water and fiber. I keep celery sticks cut and ready in my fridge all the time. Sometimes I eat them plain, sometimes with a tiny bit of mustard, sometimes with hot sauce.
If I have the calorie budget, I’ll add 1 tablespoon of hummus for dipping (about 35 calories), but honestly, celery with salt and pepper is satisfying on its own when I just need something crunchy.
Why it works: The crunch is satisfying, and you can eat a lot of it. Some people find celery too bland, but that’s what seasonings are for. Everything bagel seasoning on celery is surprisingly good.
Cherry Tomatoes
Calories: About 3 calories per tomato
I buy those little containers of cherry tomatoes and eat them like candy. Ten cherry tomatoes is only about 30 calories. They’re sweet, juicy, and feel more substantial than cucumbers or celery because they have flavor.
I eat them plain as a snack, or I’ll toss them in a bowl with balsamic vinegar, fresh basil, and a tiny sprinkle of salt for a more “fancy” snack experience.
Why it works: Natural sweetness satisfies cravings without sugar. The juicy pop when you bite into them is satisfying. They’re also a good source of vitamins and antioxidants.
Sugar-Free Jello
Calories: 10 calories per serving
This is as close to actual zero calories as you can get for something that feels like a real snack or dessert. Sugar-free Jello has only 10 calories per half-cup serving, and it’s sweet, which helps with cravings. And there’s tons of flavors. Banana strawberry is yum.
I buy the pre-made cups for convenience, but making it from the box is cheaper. Sometimes I’ll add a dollop of light whipped cream (20 calories) if I have room in my budget, but the Jello alone does the job.
Why it works: Sweet without significant calories. The gelatin takes time to eat, which makes it more satisfying than just drinking something sweet. This also shows up in my low calorie desserts article for when I need something sweet on minimal calories.
Pickles
Calories: About 5 calories per pickle spear
Dill pickles are essentially zero calorie and incredibly satisfying if you like savory, salty snacks. The vinegar and crunch make them feel substantial. I eat pickle spears straight from the jar as a snack.
Watch out for sweet pickles or bread-and-butter pickles—those have added sugar and way more calories. Stick with dill pickles or other vinegar-based pickles.
If you think you’re not a pickle person, try Grillo’s pickles and see if they change your mind.
Why it works: Salty, crunchy, and the strong flavor means you can’t mindlessly eat a ton of them the way you might with chips. The vinegar can also help with digestion and blood sugar control.
Lettuce Wraps (Just the Lettuce)
Calories: About 5 calories per large lettuce leaf
When I want the experience of eating something handheld but don’t want the calories, I’ll just eat crispy lettuce leaves. Romaine hearts, iceberg, or butter lettuce work great. I’ll eat them plain or with a sprinkle of salt and pepper.
Sometimes I’ll put a tiny bit of mustard or hot sauce on them, or if I have a few calories to spare, I’ll add a single slice of turkey (about 20 calories) rolled inside.
Why it works: Crunchy, hydrating, and the act of holding and eating something is satisfying even if it’s basically just lettuce. This is a high volume low calorie food champion.
Radishes
Calories: About 1 calorie per radish
Raw radishes are peppery and crunchy and have almost no calories. I slice them thin and eat them with salt, or I’ll dip them in a tiny bit of seasoned rice vinegar. Some people love radishes, some hate them—I’m in the love camp.
Roasted radishes are also good (they taste kind of like roasted potatoes) but that’s more of a side dish than a snack.
Why it works: Strong flavor means you can’t eat them mindlessly. The crunch is satisfying, and they’re so low calorie that you truly don’t need to count them.
Zucchini Sticks
Calories: About 20 calories per medium zucchini
Raw zucchini sticks with salt, pepper, and a squeeze of lemon are surprisingly good. I cut them into sticks like French fries and keep them in the fridge for snacking. They’re mild-flavored and crunchy.
If I need more flavor, I’ll dip them in salsa or a tablespoon of hummus (which adds calories, but then it becomes a low calorie snack rather than zero calorie).
Why it works: Volume without calories, crunchy texture, and they’re versatile—you can season them different ways depending on your mood.
Bell Pepper Strips
Calories: About 30 calories per medium pepper
Raw bell pepper strips are sweet, crunchy, and colorful. An entire bell pepper is only about 30 calories, so even if you eat a whole one, you’re barely making a dent in your calorie budget.
I like red and yellow peppers best because they’re sweeter. I eat them plain or with a tiny bit of hummus if I have the calories for it.
Why it works: The sweetness satisfies cravings, they’re crunchy, and they’re packed with vitamin C. The different colors make snacking feel more fun.
Mushrooms (Raw or Roasted)
Calories: About 15 calories per cup
Raw mushrooms sliced thin are earthy and satisfying. If you want more flavor, toss sliced mushrooms on a baking sheet with cooking spray, salt, pepper, and garlic powder, and roast at 400°F for 15-20 minutes until they’re crispy. They shrink a lot but become concentrated in flavor.
Roasted mushrooms are almost like chips in terms of satisfaction but with minimal calories.
Why it works: Umami flavor is naturally satisfying to our taste buds. Mushrooms have a meaty texture that makes them feel more substantial than other vegetables.
Cabbage (Raw or Cooked)
Calories: About 22 calories per cup raw, 33 calories per cup cooked
Shredded cabbage is incredibly filling for very few calories. I keep coleslaw mix (just the cabbage, without dressing) in my fridge and eat it plain with a splash of rice vinegar and a sprinkle of salt.
If I want something warm, I’ll sauté cabbage with cooking spray and seasonings until it’s tender and slightly caramelized. A huge portion is still only about 50 calories.
Why it works: Extremely high volume, fiber that fills you up, and it’s versatile—you can eat it raw or cooked, sweet or savory. This is a top contender for high volume low calorie foods.
Seaweed Snacks
Calories: About 30 calories per package
Those roasted seaweed snack packs you find at the store are super low calorie (usually 30 calories for a whole pack), crunchy, salty, and satisfying. They come in different flavors—I like the sea salt and the wasabi versions.
They’re not for everyone—seaweed has a distinct oceany taste—but if you like them, they’re a great chip alternative.
You can get a box of different flavored seaweed snacks so you don’t get sick of these!
Why it works: Crispy, salty, and they satisfy the urge to eat something crunchy and snacky without many calories. They’re also naturally gluten-free and have iodine and other minerals.
Sugar-Free Popsicles
Calories: About 15 calories per popsicle
Sugar-free popsicles are a lifesaver in the summer or when I want something sweet and cold. They take a while to eat because they’re frozen, which makes them more satisfying than something you can eat quickly.
I buy the Outshine No Sugar Added fruit bars or generic sugar-free popsicles. They’re all around 15 calories each.
Why it works: Sweet, cold, and they last a while to eat. Perfect for summer evenings when I want something refreshing. These also appear in my low calorie desserts article.
Broth or Bouillon
Calories: About 10-15 calories per cup
A mug of hot broth is incredibly satisfying when I want something warm and comforting but don’t have calories left. I use low-sodium chicken or vegetable broth, or I’ll make a cup from a bouillon cube.
Sometimes I’ll add sliced green onions or a few drops of hot sauce for more flavor. This is especially good in the evening when I’ve eaten all my food for the day but want something before bed.
This Swanson broth has ginger and turmeric!
Why it works: Warm liquids are naturally soothing and filling. The salt in the broth is satisfying, and it feels more substantial than just drinking water. Some studies suggest that soup or broth can help reduce overall calorie intake at meals.
Strawberries
Calories: About 50 calories per cup
Okay, strawberries aren’t technically zero calorie, but a whole cup is only 50 calories, which is pretty close. They’re sweet, juicy, and feel like a treat. I eat them plain or sliced with a tiny drizzle of balsamic vinegar (sounds weird, tastes amazing).
Sometimes I’ll freeze them and eat them frozen like little fruit popsicles. Or I’ll cut them in half and sprinkle with a tiny bit of stevia and lemon juice.
Why it works: Natural sweetness satisfies cravings without added sugar. They’re filling because of the fiber and water content. Plus, they’re a good source of vitamin C and antioxidants.
Watermelon
Calories: About 46 calories per cup
Like strawberries, watermelon isn’t zero calorie but it’s close. A whole cup of cubed watermelon is only 46 calories, and it’s mostly water so it’s very filling. In the summer, I keep a big container of cubed watermelon in my fridge for snacking.
I eat it plain, or sometimes with a sprinkle of salt and a squeeze of lime (which sounds weird but is delicious). It’s refreshing and hydrating.
Why it works: High water content makes it incredibly filling for the calories. The sweetness is satisfying, and it’s refreshing on hot days. It also helps me stay hydrated, which is important when I’m trying to reach my water goals.
Air-Popped Popcorn (Plain)
Calories: About 30 calories per cup popped
This one requires a small caveat: popcorn itself isn’t zero calorie, BUT if you air-pop it with no oil and eat it plain or with just salt, it’s very low calorie for the volume. Three cups of air-popped popcorn is only about 90 calories.
I use an air popper (not microwave popcorn, which has way more calories from oil and butter). I spray it lightly with cooking spray so seasonings stick, then add salt or other seasonings.
I love this air popper from Dash!
Why it works: You can eat a huge bowl and it’s still minimal calories. The act of eating popcorn one piece at a time makes it last. This is also in my 100 calorie snacks article as a perfectly portioned option.
Cauliflower Florets
Calories: About 25 calories per cup
Raw cauliflower florets are crunchy and mild. I eat them plain, with everything bagel seasoning, or with a tiny bit of hot sauce or mustard. If I want something warm, I’ll roast them with cooking spray and seasonings, though that takes more effort.
Why it works: Filling, crunchy, and versatile. Cauliflower is having a moment in the food world for good reason—it’s low calorie and can be used in so many ways.
Green Beans
Calories: About 31 calories per cup raw
Raw green beans are crunchy and slightly sweet. I eat them like chips while I’m cooking dinner. If I want something warm, I’ll quickly steam them or roast them with cooking spray and garlic powder.
Why it works: Crunchy, filling, and the fiber keeps you satisfied. A whole cup is only 31 calories, so even if you eat two cups, you’re still under 65 calories.
My Zero Calorie Snack Strategy
Here’s how I use these virtually zero calorie snacks:
Keep them prepped and ready. Every Sunday I wash and cut vegetables so they’re ready to grab. If they’re not prepped, I won’t eat them. I’ll reach for something higher calorie instead. This is part of my low calorie meal prep ideas routine.
Use them strategically. These aren’t meant to replace my planned low calorie snacks that have protein and keep me full. These are for moments when I want to munch but don’t need actual nutrition or calories.
Combine with strong flavors. Plain vegetables can be boring. I use hot sauce, vinegar, mustard, salt, everything bagel seasoning, and other no/low-calorie flavor enhancers to make them more interesting.
Don’t use them as meal replacements. These snacks are great for between meals or when you’ve already eaten your meals and want something extra, but they shouldn’t replace actual nutritious meals with protein and healthy fats.
Log them if you eat a lot. While individually these foods are minimal calories, if I eat three cucumbers, a bunch of cherry tomatoes, and a bowl of strawberries, that adds up to maybe 150 calories. I still log it in Cronometer to be accurate.
Keep a variety stocked. I rotate through different options so I don’t get bored. Sometimes I want sweet (strawberries), sometimes savory (pickles), sometimes crunchy (cucumbers).
When Zero Calorie Snacks Are Most Helpful
Evening munchies. This is when I use them most. I’ve eaten my planned low calorie dinner and maybe a low calorie dessert, but I still want to eat while watching TV. Having cucumbers or celery to munch on means I can satisfy the urge without sabotaging my deficit.
Social situations. When everyone else is snacking and I don’t want to feel left out, I’ll eat vegetables or have a sugar-free popsicle. This way I’m participating in the social aspect without using calories I don’t have.
After using all my calories. Some days I use all my calories by 6 PM but it’s a long evening. Having essentially free foods to eat means I don’t feel deprived.
When I’m bored, not hungry. I’ve learned to recognize the difference between actual hunger and wanting to eat because I’m bored or emotional. When it’s not real hunger, zero calorie snacks satisfy the urge to eat without consequences.
During meal prep. I used to snack on whatever I was cooking, which could easily add 200-300 calories. Now I snack on cut vegetables while I’m prepping and cooking.
What Zero Calorie Snacks Are NOT
Let me be clear about what these snacks are not:
They’re not meal replacements. You can’t live on cucumbers and celery. You need protein, healthy fats, and adequate calories to function. These are supplemental snacks, not main nutrition.
They’re not magic weight loss foods. Eating lots of cucumber won’t make you lose weight faster. Weight loss comes from the overall calorie deficit, which for me means eating 500 calories less than I burn plus burning an additional 150 through exercise.
They’re not always satisfying. Sometimes you need a real snack with protein and fat from my low calorie high protein foods list. Zero calorie snacks are for when you want to munch but don’t need actual nutrition.
They don’t give you “extra” calories. The fact that celery is essentially zero calories doesn’t mean you can eat more of other things. The goal is still maintaining your deficit.
Common Mistakes with Zero Calorie Snacks
Mistake #1: Thinking diet sodas and drinks count. While diet sodas are technically zero calorie, I don’t recommend relying on them. The artificial sweeteners can increase cravings for some people, and they don’t provide the satisfaction of actually chewing and eating something. Check out my low calorie drinks article for better options.
Mistake #2: Eating only zero calorie snacks all day. This is not sustainable or healthy. You need actual nutrition from protein, healthy fats, and complex carbs throughout the day.
Mistake #3: Forgetting to log them when eating large quantities. Yes, one cucumber is only 16 calories, but if you eat four cucumbers, two bell peppers, and a pint of strawberries, that’s 200+ calories and should be logged.
Mistake #4: Using them as punishment. These aren’t “diet jail” foods you have to eat because you messed up. They’re helpful tools for specific situations, but they shouldn’t replace enjoyable, nutritious foods.
Mistake #5: Not seasoning them. Plain vegetables are boring. Use spices, vinegar, hot sauce, and other flavor enhancers to make them actually enjoyable to eat.
The Bottom Line on Zero Calorie Snacks
After ten months of eating in a 500 calorie deficit while burning an additional 150 calories through exercise, I can tell you that having a list of virtually zero calorie snacks has been incredibly helpful for my mental health and sustainability.
At 50, with a mostly sedentary lifestyle (aside from my 10k steps goal), I don’t have unlimited calories to work with. Having snacks I can eat freely when I want to munch but don’t need real nutrition has prevented countless occasions where I might have eaten something high-calorie out of boredom or habit.
These aren’t the snacks that keep me full or provide significant nutrition—that’s what my planned low calorie snacks with protein are for. These are the snacks that let me participate in the social act of eating, satisfy the urge to munch, and feel less restricted while still maintaining my calorie deficit.
The key is having them prepped and ready. If I have to wash and cut a cucumber every time I want a snack, I won’t do it. But if there’s a container of cucumber slices already cut in my fridge? I’ll grab those instead of something higher calorie.
Just like creating my sanctuary space helped me feel more like myself, having these zero calorie options has helped me feel less restricted and more in control of my eating. I’m not white-knuckling it through the evening trying not to eat—I’m eating vegetables and feeling satisfied.
Use your tracking app (see my calorie tracking apps article) to log these when you eat significant quantities, but don’t stress about counting every single cucumber slice. Apps like Cronometer can help you see the bigger picture of your nutrition over time.
What’s your go-to zero calorie snack? Or what do you reach for when you want to munch but don’t want the calories? Let me know in the comments!
Looking for snacks with a bit more substance? Check out my low calorie snacks and 100 calorie snacks articles for options that include protein and healthy fats. Or browse my low calorie meal plan to see how I incorporate both zero calorie and low calorie snacks throughout my day.