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Losing weight is possibly one of the primary goals of most of my clients. And they're almost always surprised when I suggest protein powders as a way to help them lose weight more effectively.
Over the years, our team here at Total Shape has managed to find some low-calorie protein powders that we generally recommend to our clients, especially for losing weight.
Here are the top picks for the best low-calorie protein powders.
The Best Low-Calorie Protein Powders
- Best Overall Low-Calorie Protein Powder: Transparent Labs
- Cheapest Low-Calorie Protein Powder: BulkSupplements Whey Protein Isolate
- Best Tasting Low-Calorie Protein Supplement: My Protein Isolate
- Best Vegan Low-Calorie Protein Supplement: Future Kind
- Best Keto-Friendly Low-Calorie Protein Powder: Isopure Zero Carb Protein Powder
Top Low-Calorie Protein Powders (July 2025)
1 - Transparent Labs ProteinSeries (Best Overall)
- Price per serving : $2.00
- Key ingredients : Whey Protein Isolate
- All flavors : Milk Chocolate, French Vanilla, Chocolate Peanut Butter, Mint Chocolate Chip, Vanilla Peanut Butter, Strawberry Milkshake, Unflavored, Dark Chocolate, Oatmeal Chocolate Chip Cookie, Cinnamon French Toast, Sugar Cookie, Mocha, Peanut Butter, Vanilla Oatmeal Cookie, Blueberry Pancakes
- Third-party tested : Yes
Pros and Cons
Pros
- 28 grams of whey protein isolate per serving
- 120 to 140 calories per whey protein serving depending on flavor
- No artificial sweeteners, fillers or flavors
- Contains zero fat and only 1g of carbs
Cons
- Milk chocolate and vanilla flavors are not available in protein powder tubs
Who is it for?
Who is it for?
- Those seeking a clean, pure protein powder
- Individuals on low-carb diets
Who is it not for?
- Those wanting a variety of flavor options
Final Verdict
An excellent choice for purity and effectiveness. Minor drawback is the limited flavor options.
I’ve always been on the hunt for a protein powder that’s as clean as it gets, and I struck gold with Transparent Labs. This brand is known for its commitment to purity and effectiveness. Every shake I make feels pure, and knowing I’m not downing unnecessary fillers makes every sip even more satisfying.
These whey protein powders have the lowest caloric content, but the 120 calorie content per serving is almost exclusively from protein, which is ideal especially if you're trying to eat less carbs.
The only minor annoying thing for me is that not all flavor options are available in tubs.
Get 10% off using coupon code: TOTALSHAPE
2 - My Protein Impact Whey Protein Isolate (Best Tasting)
- Price per serving : $0.59
- Key ingredients : Whey Protein Isolate
- All flavors : Chocolate Brownie, Chocolate Mint, Chocolate Smooth, Cookies and Cream, Mocha, Pistachio, Salted Caramel, Strawberry Cream, Unflavored, Vanilla
- Third-party tested : Yes
Pros and Cons
Pros
- 20 grams of whey protein isolate on each serving
- 90 calories per whey protein serving is one of the lowest we could find
- Whey protein has practically no carbs and sugar
- Many positive comments about the whey protein texture and taste
Cons
- A few more whey protein powder flavor options would be great
Who is it for?
Who is it for?
- Those looking for great taste
- People on strict low-calorie diets
Who is it not for?
- Those desiring more flavor options
Final Verdict
Delicious and low in calories, ideal for taste-conscious dieters. More flavors would enhance its appeal.
Of all the plant-based and whey protein powders we researched, we couldn't find one that provided less than 90 calories per serving, considering the amount of protein. This makes My Protein Impact a standout choice in the market.
I remember the first time I mixed a shake with My Protein Impact; I was skeptical about the taste because of the low carb content. To my surprise, it was delicious! It became my go-to, especially on my strict low-calorie days.
I just found that I got a bit bored with the protein powder flavors available, so a few more whey protein isolate options would be great. Regardless, the flavors they have are decent and more natural-tasting than some protein powder brands.
3 - Future Kind Vegan Chocolate Protein Powder (Best Vegan)
Pros and Cons
Pros
- Vegan-friendly, organic pea protein
- Third-party tested
- Many positive reviews regarding texture and mixing ease
Cons
- Only two flavor options
I was impressed by Future Kind's simplicity and the fact that it packed only 120 calories per serving. Every gulp resonated with my new dietary journey, making the transition smoother.
Each eco-friendly bottle made from 100% recycled materials contains 30 servings.
Future Kind protein powder is third-party tested and manufactured in an FDA-regulated, GMP-certified facility for peace of mind.
You’ll get a ten percent discount for ordering their “subscribe and save” option or a five percent discount for ordering multiple bottles at the product's price; some may not find these discounts enticing enough.
4 - Isopure Zero Carb Protein Powder (Best Keto-Friendly)
- Price per serving : $1.81
- Key ingredients : Whey Protein Isolate, Vitamin and Mineral Blend
- All flavors : Banana Cream, Chocolate, Chocolate Peanut Butter, Cookies & Cream, Creamy Vanilla, Dutch Chocolate, Strawberries & Cream, Toasted Coconut, Vanilla Salted Caramel
- Third-party tested : Yes
Pros and Cons
Pros
- 25 grams of whey protein isolate per serving
- 110 calories per whey protein powder serving
- Contains no fat or carbs which makes it popular with keto dieters
- Very good selection of whey protein flavors
Cons
- Contains artificial sweeteners such as sucralose. resulting in an artificial flavorings taste
Who is it for?
Who is it for?
- Keto diet followers
- People avoiding carbs
Who is it not for?
- Those avoiding artificial sweeteners
Final Verdict
Perfect for keto with zero carbs and fats. Contains artificial sweeteners, which may not appeal to everyone.
As a keto enthusiast, finding Isopure was like striking gold. Every serving, with zero carbs and fats, meant I could enjoy my shakes without the guilt or worry of veering off my keto journey. It's a perfect fit for those following a strict ketogenic diet.
This may make it easier for you to prepare your meal plans without messing up your ketosis and fat loss efforts.
While these protein powders are available in a large variety of flavors, just be aware that it lists some sucralose on the ingredients list.
5 - BulkSupplements Whey Protein Isolate (Cheaper Option)
- Price per serving : $1.15
- Key ingredients : Whey Protein Isolate, Sunflower Lecithin
- All flavors : Unflavored
- Third-party tested : Yes
Pros and Cons
Pros
- 26 grams of protein per whey protein powder serving
- 110 calories per whey protein powder serving
- Less than 1 gram of carbs and fat
- Available in good whey protein bulk order options
Cons
- Not sourced from grass-fed non-hormone treated cows
Who is it for?
Who is it for?
- Budget-conscious buyers
- Those needing high protein per serving
Who is it not for?
- Those preferring hormone-free sources
Final Verdict
Affordable yet high-quality protein. Not sourced from hormone-free cows.
I found BulkSupplements when I was on a budget but didn’t want to compromise on quality. Each serving not only fit my pocket but also my nutritional needs, proving that quality and affordability can indeed go hand-in-hand.
This whey protein powder is not one of the absolute lowest-calorie protein powders out there, but it's still within range of losing weight and supporting most diets.
The one downside with this whey protein powder option is that it's not sourced from hormone-treatment-free cows, which may be essential for many people.
6 - PaleoPro Protein Powder
- Price per serving : $2.70
- Key ingredients : Grass-Fed Beef Protein, Cage-Free Egg White Protein
- All flavors : Ancient Cacao, Aztec Vanilla, Mayan Mocha, Plain
- Third-party tested : Yes
Pros and Cons
Pros
- 26 grams of beef and egg protein on every protein powder serving
- 120 calories per protein powder serving
- Also contains hydrolyzed collagen for healthy joints
- Certified hormone and antibiotics-free for a natural paleo diet
Cons
- Takes a while to shake up into a smooth texture
Who is it for?
Who is it for?
- Paleo diet adherents
- Those wanting joint health benefits
Who is it not for?
- Those who dislike extensive shaking
Final Verdict
Unique protein source with added collagen benefits. Requires significant shaking to achieve smooth texture.
PaleoPro has specialized in making a protein powder that is sourced from premium beef and eggs. This unique source makes it an excellent option for those following a Paleo diet.
This protein powder has minimal carbs and fat and comes with the added benefit of containing some collagen peptides that may help to improve joint health [1].
Just be prepared for serious shaking to get the consistency right; you could be mistaken for shaking up some fancy cocktails.
7 - Quest Nutrition Protein Powder
- Price per serving : $1.21
- Key ingredients : Whey Protein Isolate, Micellar Casein
- All flavors : Chocolate, Cinnamon Crunch, Cookies & Cream, Multi-Purpose, Peanut Butter, Salted Caramel, Vanilla Milkshake
- Third-party tested : Yes
Pros and Cons
Pros
- 23 grams of casein and whey protein blend every protein powder serving
- 100 calories per protein powder serving
- Contains no fat or carbs to mess with your diet
- Certified gluten-free to avoid some most common types of food allergy
Cons
- You may need a blender to get this protein powder smooth
Who is it for?
Who is it for?
- Gluten-sensitive individuals
- Those needing a low-fat, low-carb option
Who is it not for?
- Those without a blender
Final Verdict
Gluten-free and minimal carbs and fats. Best when blended for a smoother consistency.
The last on our list of the best low-calorie protein powders is this one from Quest Nutrition, which has little traces of fat and carbs on the ingredients label.
I had tried various protein powders, but Quest Nutrition struck a chord with me. The minimal traces of fat and carbs meant I could enjoy my shakes without the extra calorie baggage.
Like a few protein powders that we tested, it is best when you blend it to get a better protein powder consistency.
8 - Performance Lab Sport Protein Powder
Pros and Cons
Pros
- 20 grams of protein per protein powder serving
- 100 calories per protein powder serving
- Contains only certified organic ingredients
- Claims to help you deal with hunger cravings
Cons
- The protein powder is not the smoothest consistency
Who is it for?
Who is it for?
- Lactose intolerant individuals
- Those wanting organic ingredients
Who is it not for?
- Those seeking smooth texture
Final Verdict
Ideal for lactose-intolerant users with organic ingredients. Slightly grainy texture might be a drawback.
Being lactose intolerant, my options were limited until I discovered Performance Lab. Each serving was a delightful experience, free of discomfort, proving that lactose-free options could be just as tasty and effective.
It's not only a low-calorie protein powder but also claims to help with filling you up for longer with its nutrient content.
The only thing I didn't like is that the protein powder seemed to be just a little bit grainy.
How We Tested the Products
We tested the products by curating a diverse list of low-calorie protein powders, ensuring a mix of popular brands, new entrants, and varied ingredient compositions. Our selection included products catering to different dietary preferences, including vegan, gluten-free, and dairy-free options.
- Nutritional value — Analyzing the protein content, type of protein used, and the presence of additional nutrients or additives.
- Taste and flavor — Assessing the taste profile, aftertaste, and the variety of flavors available.
- Mixability — Examining how well the powder mixes in different liquids to ensure a lump-free, smooth texture.
- Effectiveness — Monitoring the impact on muscle recovery, energy levels, and overall performance when incorporated into a regular diet and exercise routine.
- Nutritional analysis — Analyzing the nutritional content of each protein powder. This step ensured the accuracy of the protein content, calorie count, and other nutritional information provided on the label.
- Quality and safety — We evaluated the quality of ingredients, manufacturing practices, and certifications to ensure each product met the highest standards of safety and quality.
Buyer’s Guide: Key Factors for Choosing the Best Low-Calorie Protein Powder
When shopping for the best low-calorie protein powder, consider these essential criteria:
- Protein content and quality. Check the protein content per serving. Opt for high-quality sources like whey isolate or plant-based proteins for more protein with fewer calories.
- Calorie count. Focus on the calorie count per serving. The best low-calorie powders provide substantial protein with minimal calories.
- Flavor and mixability. Taste matters, even in low-calorie options. Choose a flavor you like and a powder that mixes smoothly.
- Ingredient transparency. Look for powders with clear ingredient labels and avoid those with unnecessary fillers or additives that could increase calorie content.
These considerations will help you find a protein powder that meets your dietary goals, offering quality protein in a low-calorie package.
Who Are Low-Calorie Protein Powders Suitable For?
Low-calorie protein powders are suitable for people who have strict dietary needs in losing weight. But there are a few specific reasons that we’d like to go into a bit more.
Calorie-Restricted Diets
The secret to shedding some pounds is to eat healthy and burn more calories than you're taking in. It sounds simple, but it's not the easiest thing to do.
So, when you've managed to get your food cravings under control, the last thing you want is for your dietary supplement to mess things up for you.
Unfortunately, some of the commercial protein powder products out there that claim to be the best protein powder is laced with carbs, sugar, fat, and, ultimately, tons of calories.
Keto Lifestyle
The only way you can create low-calorie protein powders without reducing the protein content is by stripping out carbs and fat. This is especially interesting for anyone on the keto diet where carbs are basically the enemy.
Unless those carbs come in the form of dietary fiber, you want to keep them to an absolute minimum. Fiber doesn't only help you feel full longer, it also improves the body's digestive process.
Underlying Health Issues
I have worked with people who suffered from heart conditions that were ultimately diet-related. For such people, it's vital to remove all saturated and trans fats from everything they eat, even protein powders [2].
Based on the information I got from my dietitian, she always recommends low-calorie protein products as they generally limit or completely remove any fats.
But there's more to the protein powder story.
How Does Low-Calorie Protein Powder Help With Weight Loss?
Low-calorie protein powder helps with weight loss through appetite suppression and metabolic rate increase. Here's a more detailed breakdown.
Achieve Net Negative Calories
By using only the best low-calorie protein powder like those above, you may be able to lose weight faster as you will be taking in fewer calories. When that is combined with some more regular physical activity, things start to happen in the fat melting department.
Deal With Hunger Cravings
Usually, people look for fiber to feel full. But protein has this hidden benefit of taking longer to digest than carbs. As a result, it gives you the feeling of satiety for longer, which may help with skipping snacks and extended fasting periods [3].
So, if instead of reaching for a Krispy Kreme for your snack, you pick up a tasty flavored protein shake, you might be able to make some more significant changes in your lifestyle.
For instance, protein has been shown to reduce appetite and prevent overeating by triggering hormones that promote feelings of fullness and satisfaction.
- Franziska Spritzler, Registered Dietitian
Boost Metabolic Rates
One of the biggest obstacles people have in their battle in losing weight is how their metabolism reacts to certain macronutrients. For so many of my clients, it's almost always down to refined carbohydrates.
The good news is that protein has been shown in clinical research to boost metabolic rates that may help with burning more fat [4] .
Check out these helpful tips to learn more ...
Bottom line: eating more protein can boost your metabolism because it has a higher thermic effect meaning your body is going to have to work harder to digest, break down, and store it.
- Tamara Pridgett, Personal Trainer
What Should Influence Your Protein Powder Buying Decision?
These are the four areas that should influence your buying decision when it comes to low-calorie protein powders:
- Protein sources. Choose between plant-based (like pea, hemp, and brown rice) and animal-based (like whey, beef, chicken, eggs) proteins. For complete amino acids, mix plant proteins, like rice and pea. Whey is great for its branched-chain amino acids. Choosing the best protein powder is almost an entirely personal choice. Whether it's vegetable pea protein isolate or whey protein powder, the more important thing is that you're getting the recommended amount for your goal.
- Muscle building goals. If you're not vegan and aiming for muscle growth, go for high-quality whey protein. It's packed with all nine essential amino acids, including BCAAs. Vegans can combine rice, hemp, and pea proteins for similar benefits [5].
- Dietary restrictions. You might be thinking of vegans and vegetarians where it's down to a personal choice. But it's far more common to make dietary decisions due to allergies and intolerances [6]. Avoid lactose, soy, or gluten if necessary and watch out for caffeine in some powders.
- Texture and taste. Texture has improved, but it's still about trial and error. Check online reviews to find a powder that blends smoothly and tastes good.
- Safety and quality. Be cautious of over-hyped brands. Look for third-party testing or purity certifications for quality assurance. Always talk to a doctor before adding supplements to your routine.
- Types of protein powders: Understand different types: concentrates (60-80% protein), isolates (90-95% protein, low fat/carbs), hydrolysates (pre-digested for easy absorption), and egg protein (slow-absorbing, lactose-free).
Your choice of protein powder is personal, focusing on your goals, dietary needs, and taste preferences.
Speaking of, here are some of the best protein powders tailored for every goal:
How To Use Low-Calorie Protein Powder To Lose Weight?
To lose weight, you should use a low-calorie protein powder following these three simple guidelines that I often give to my clients.
Balance Your Diet First
You have to fix your diet and start counting calories. Trash all the processed stuff and everything laced with sugar. The easiest way to achieve this is with an app like Noom to help you monitor your macros and calories.
Create A Regular Exercise Routine
You have to start doing physical activity several times a day. No, I don't mean going to the gym twice a day. Even a 10-minute fast-paced walk at lunchtime may help to burn some extra calories.
Know How to Mix the Protein Powders
Here are various mixing options that enhance taste and texture without packing on extra calories:
- Water — Is the most straightforward mixing option. It keeps the calorie count low and delivers the protein in its purest form. However, the taste can be somewhat bland. To spice it up, consider adding a dash of cinnamon or a drop of vanilla extract to infuse flavor without adding significant calories.
- Coffee — Mix your protein powder with cold coffee to add a robust flavor and an energy boost. It’s a perfect post-morning workout drink that combines the benefits of protein and caffeine, helping you recover while staying alert and focused.
- Skim milk — Adds a creamy texture to your protein shake without the added fats. It also provides additional calcium and vitamin D, supporting bone health.
- Plant-based milk — Almond, soy, and oat milk are excellent alternatives for those seeking plant-based options. Each adds a unique flavor profile and consistency to your protein shake. Almond milk is light and nutty, soy milk is rich and creamy, and oat milk boasts a sweet, mild taste.
- Fruits and berries — Add natural sweetness, vibrant colors, and a variety of textures. Berries are low in calories but high in antioxidants, making them a healthy choice. Bananas can add creaminess, while citrus fruits offer a refreshing tang.
Stack With Other Supplements
People often think of bodybuilders who stack multiple different protein supplements to build muscle mass. However, there are some great pre-workout products and fat burners that may help you work harder.
And if all else fails, invest some money by hiring a personal trainer like me to hold you accountable 😉
FAQs
Which type of protein powder is best for weight loss?
Hemp type of protein powder is the best for weight loss as it has one of the highest levels of fiber content. This may help with making you feel full for longer, meaning that you can reduce your food intake.
Other protein powders that can help in losing weight:
How many calories are in protein powders?
Low-calorie protein powder has 100 to 150 calories per serving. However, it still depends on what a person considers to be low-calorie.
Does low-calorie protein powder help in losing weight faster?
No, a low-calorie protein powder does not necessarily help in losing weight faster. It still depends on your overall diet and caloric intake, physical activity level, and other lifestyle habits.
How many calories does a low-calorie protein powder have per serving?
Low-calorie protein powder has 100 to 150 calories per serving. However, it still depends on what a person considers to be low-calorie.
Our Verdict on the Best Low-Calorie Protein Powder
From all my years' worth of experience with clients of all ages and sizes, I have found that whey protein isolate doesn't seem to let you down. The one that has worked best for us that has one of the lowest calories is Transparent Labs.
This protein powder has 1g of carbs and zero fat, and it tastes really good as well.
These powders are not just a supplement; they're a smart, sustainable choice for anyone looking to enhance their health without breaking the bank.
Our #1 Low Cal Protein Powder
Transparent Labs ProteinSeries (Best Overall)
Rated With Total Shape's Scoring System
- 28 grams of whey protein isolate per serving
- 120 to 140 calories per whey protein serving depending on flavor
- No artificial sweeteners, fillers or flavors
- Contains zero fat and only 1g of carbs
- Get 10% off using code: TOTALSHAPE
- Milk chocolate and vanilla flavors are not available in protein powder tubs
About The Author
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I’ve been using Transparent Lab Protein and I can say that it makes the best low-calorie protein shakes!
first of all, I am a huge follower, almost addicted to your blog. this is my go to blog for reviews. you talk about things honestly and are concerned about your readers. for that, thank you! continue to giving out useful information to the community, we appreciate it and we will continue to support you and your team. secondly, I have been reading a lot of good reviews about transparent labs, im actually looking for a low carb powder for me and my husband and I’m considering getting this
It’s good if you’re in keto right? Would love to try it if it is
I love your blog, been binge reading for the past week and I’m learning a lot, thanks to your inputs! My friends and I are doing a challenge this week, since we’re all in quarantine, we are doing a fitness challenge and whoever loses the most weight during this quarantine period wins. This is going to be a hard one since I already gained 3 lbs the past 3 days LOL but I’m determined! I looked at these products and they got me very interested. I havent tried many but im surprise the ones on this list are very affordable, not sure what the average cost is
I have a question regarding this topic, I am on keto diet, and I am looking for something that I can use for my work out. I have been using this brand from my local grocery and it’s okay, except that it is very high in sugars and goes against what I am trying to achieve with my diet. I found your blog and looked into your recommendations, surprised that I didn’t even know these types of products existed, so thank you! I just placed an order now and expecting delivery on Monday. Looking forward to finally having something that’s zero carbn
I have been using trans parent labs for many years and I always go back to it when i need some support for my gym efforts. i have to say that it’s one of my favorites!
Anyway, thank you for putting up this article, you’re always on the loop when it comes to things like these. Good stuff!
Almost everyone takes supplements nowadays. They have become part of our daily diet, and the industry is huge to say the least. Yes, these companies earn billions of dollars. I personally think that everyone needs them especially with all the unnatural foods we have now! Fast food here, fast food there, fast food everywhere. As much as we want to eat healthy, it can be difficult to do that when everything is already processed. The only way to go about it is to supplement so we get all the things we need in our bodies and make sure that we’re all healthy and safe all the time!
how i wish we can still be at a time where every thing we need is right in the backyard. I remember living at my grand mother’s home and she had chilis, tomatoes, onions, garlics and some leaves in her garden –we can just pick something if we need it! for free! good times. anyway, I live in a condo now and I don’t have a garden so the farmer’s market is my friend when it comes to condiments and cooking stuff.
I have always used the 7th brand on this list and i thought it was the lowest i could find…didn’t know there were zero in some of these brands!! so crazy. i have to get one of these next time.
thank you for always taking time to review these things, really helpful stuff!!! my friend shared one of your reviews before and here I am, addicted to your content. i always read your content and 100% of the time, i learn something new. I love your style, and my friend and I always discuss about your recommendations! i also like the exercise tips and diet advise, makes me more conscious about my heath
“Over thousands of years, one generation has passed its “survival genes” on to the next. So thanks to our ancestors, we are equipped to subsist on minuscule amounts of the essential nutrients, just in case a famine comes along. But as I said before, this insurance policy remains effective only into our twenties — just long enough for us to reproduce. It includes no provision for aging.”
this one is from chiro dot org, do you agree? I do! We are able to survive with the least amount of nutrients for as long our bodies can handle! But this doesn’t mean you have to starve, just eat healthy, make sure you get enough sleep, and you’ll be fine
Love this article! I”m looking for one for my dad — he has diabetes and wants to start going to the gym, asked his dietitian if he can go have some of these and he agreed, as long as it is low in calori e. this is perfect!!! the top product with zero car bs is awesome!! Excited for him to try that stuff. He has got a personal trainer who will help him with the work outs and his dietitian from the hospital will plan his meals. I am sure he will be in his best shape in no time. Love you daddddd
This article is very useful and informative. The product mentioned in this article is awesome and has no carbs.
wonderful post, I have tried isopure protein before and the results combined with the training are amazing.
I didn’t know that protein powders can help me lose weight effectively. I badly need this. Thank you so much to this wonderful review
Your reviews provide a lot of extra information that is always super helpful. I hope you continue with this amazing job.
I am totally on board with the idea of using protein powders to help with weight loss. I am happy you also tackle the issue of hunger in the review.
Thank you for including the weight loss video. It’s very fun and informative at the same time.
Amazing job for doing this detailed research. It is now much easier for me to choose the best among the recommendations.
These would be great for body building. I am so glad I bumped into the article.
The prices of these products are very fair if you consider the value you get from them. The review is very detailed and well researched. Thanks for this.
I have always been of the target to get weight loss to possibly be one of my primary goal. Thanks to this cool article for helping me out.
Thanks for also touching on how all this ties in to the keto diet. It’s a lifestyle that I am very keen on adopting.
It is very important that we balance our diet inasmuch as we use protein powder. It’s very good that you have pointed this out in your review.
You give really good advice on which product one should use. I am extremely grateful for your advice.
I have been looking for something that can help me with muscle building. The recommendations are perfect for me!!
Most of the suggestions are actually all natural. I find that very attractive.
The problem with a lot of protein powers are that they are packed with a whole bunch of additives. Fortunately this low calorie protein powder give us a leaner alternative.