The Smoothie Guide
A smoothie is a meal you drink, so build it like one. Tap what goes in and see its grams, its vitamins, its grade and the one change that makes it breakfast.
Updated November 15, 2026. 10 guide pages, 31 questions, 9 myths, from 109 published sources.
Build your glass
Start from:
Tap what goes in
Graded for 165 lb, 3 meals a day, 2,000 calories a day, as a meal: a protein line of 30 g and a glass of 500 to 830 calories. The Gyroscope app personalizes yours.
What's your smoothie for?
Pick yours. Each one has its own page, and the glass changes with it.
The top ten
The best glass in each flavor, and the easiest. Every one clears all six meters for a 165 lb adult.
The questions people ask
Meals and weight loss
Can a smoothie replace a meal?Yes, if it carries a meal: protein at your line, some fiber and fat, and a meal's calories. A fruit and juice glass doesn't, which is why it's gone by ten.
How do I make a smoothie to gain weight?Add it to your meals instead of replacing one, and build it big: milk, Greek yogurt, peanut butter, oats and fruit come to about 840 calories and 48 g of protein.
How many calories are in a smoothie?From about 150 to over 800. A 20 oz Hulk Strawberry is 820 (Smoothie King, November 2026). A glass built as a meal at home lands at about 375 to 565.
Is a 500 calorie smoothie too much?Not if it's a meal. At 2,000 calories over three meals a meal runs 500 to 830, and on 1,600 a day 500 is still inside the 400 to 670 window.
Is a smoothie a good breakfast?It can be one of the best, if it clears your protein line. The chains' fruit smoothies carry 1 to 5 g of protein, against about 30 g for a 165 lb adult.- Is it OK to drink a smoothie every day?Yes, if it's a meal you'd be happy to eat every day. Keep the protein steady and change the fruit and greens through the week, since each covers different vitamins.
- What smoothie helps you lose weight?One that replaces a meal: about 30 g of protein, a spoon of chia or oats, whole fruit and no juice or honey. Swapping meals is what worked in the trials.
Why am I hungry right after a smoothie?You drank fruit and water. Liquid goes down fast, nothing gets chewed, and there's no protein in it. Add about 30 g of protein and make it thick.
Protein shakes
Greek yogurt or protein powder in a smoothie?Both work. 6 oz of plain nonfat Greek yogurt brings 17 g of protein for 100 calories and makes it thick. A scoop of whey brings about 25 g for 113.
How do I make a protein shake without powder?A cup of 1% cottage cheese has 28 g of protein. 7 oz of Greek yogurt and a cup of milk have 28 g too. Soy milk and tofu work for plant-based.- How many protein shakes a day is too many?Most people need one at most, to fix the meal that's short. Food first, and Consumer Reports advised against daily use of most powders.
How many scoops of protein powder should I use?Usually one. A typical scoop has about 25 g of protein and a cup of milk adds 8, which covers most adults' line. Go by your label's grams, not the scoop.
How much protein should be in a protein shake?About 0.4 g per kg of your weight: 25 g at 140 lb, 30 g at 165, 35 g at 180. More isn't wasted. The Gyroscope app personalizes yours.
Is whey or plant protein powder better?Whey, for most people. It has more leucine (about 11% against 7%), and plant powders averaged about nine times dairy's lead in 2025 tests. Soy matched milk in trials.
Should I drink a protein shake before or after a workout?Either. In a 2025 review of five trials, protein before or after training made no difference to the muscle people built. The day's total does the work.
Sugar and fruit
How much sugar in a smoothie is too much?Added sugar over 10 g, the US line for a whole meal. Fruit sugar is different, but two portions already bring about 20 to 37 g, so stop at two and skip juice.
Is banana bad in a smoothie?No. A medium banana adds 105 calories, 14 g of sugar, 3 g of fiber and creaminess. In one small study it cut flavanols, so skip it when berries or cocoa are the point.
Is it OK to use juice in a smoothie?Use milk or water instead. A cup of orange juice adds 21 g of sugar and half a gram of fiber, and the US guidelines say to keep juice small or water it down.
What can I use instead of banana in a smoothie?For creaminess, Greek yogurt, 2 oz of avocado or oats. For sweetness, mango or pineapple, though a cup of mango has 23 g of sugar to a banana's 14.
Which fruits have the least sugar for a smoothie?Berries. A cup of frozen strawberries has about 7 g of sugar, blueberries 13, pineapple 16, mango 23. One Medjool date has 16 on its own.
Making it
How do I make a smoothie thicker?Frozen fruit instead of ice, less liquid, Greek yogurt, oats or chia. Thick also fills you up: a thick 100 calorie shake felt fuller than a thin 500 calorie one.- How do I make a smoothie?Liquid first, then protein, frozen fruit, seeds or oats and greens, then blend. Milk, 7 oz Greek yogurt, frozen strawberries and a banana is a meal.
How long does a smoothie last in the fridge?Drink it the day you make it and keep it cold. Browning is the fruit's own enzyme meeting air, like a cut banana. For more days, freeze the parts in bags.
Buying it
- How much sugar is in a Smoothie King smoothie?A 20 oz Caribbean Way has 83 g, 50 of them added, and 2 g of protein (its menu, November 2026). The Gladiator has 1 g of sugar and 45 g of protein.
Is a smoothie bowl healthier than a smoothie?It's the same glass, thicker, plus toppings. A quarter cup of granola and a spoon of honey add about 150 calories and 21 g of added sugar.- Is it cheaper to make smoothies at home?By a lot. A strawberry banana yogurt glass costs about $2.73 at US average prices, so three $8 chain smoothies a week cost about $820 a year more.
- What's the healthiest smoothie to order at a chain?The one with protein on the label and no juice, sherbet or added sugar, in the small size. A protein add-in helps a fruit smoothie, though it can't take the sugar out.
Kids, GLP-1 and diabetes
- Can I drink smoothies if I have diabetes?Yes, built for it: protein and fiber first, berries, no juice, honey or dates. The blending trials were in healthy adults, and your care team sets your carbs.
What protein shake should I drink on Ozempic?A small, cold glass, protein first. 6 oz Greek yogurt, half a cup of milk and a few strawberries is 22 g of protein in 187 calories. Your prescriber handles the drug.
What should go in a kid's smoothie?Milk or plain yogurt, one fruit, a handful of spinach, no added sugar and no powder. The US guidelines say no added sugar for young children.
Myth or fact?
Sort of A fruit smoothie is a healthy breakfast
No Blending destroys the fiber in fruit
Not the way you think A smoothie spikes your blood sugar more than eating the fruit
Not the way you think Banana ruins the nutrients in a smoothie
Yes, but Protein powder is full of lead
No You need protein powder to make a protein shake
Quick calculators
Build your glass
Tap what goes in. Get the grams, the vitamins, a grade on the six meters of a meal and the one change that lifts it.
How much protein should my shake have?
The ultimate protein shake, sized to your weight, scoop by scoop.
Is it cheaper to make my own?
Your chain order against the same glass at home, in a year.
How much sugar is in my smoothie?
Teaspoons beside a can of cola, and the game Which has more sugar?
What do smoothie bowl toppings add?
Each topping on the bowl, and the grade before and after.
Is yours a meal or a dessert?
Made at home
- 1 banana118 g
- 1 cup frozen strawberries150 g
- 7 oz Greek yogurt198 g
- 1 cup milk244 g
Strawberry banana yogurt A
30 g protein, 40 g sugar, none added. About $2.73 at US average prices.
From the chain
The Caribbean Way, 20 oz D
2 g protein, 83 g sugar, 50 added (Smoothie King's menu, November 2026).
The guide
Everything you need to know
Are smoothies healthy? Only if you build them like a meal
A smoothie is a meal you drink, so it has a meal's six jobs to do. The fruit is never the problem, and the protein is usually missing. Here's how to build one.
How do you use a smoothie to lose weight?
Why doesn't a smoothie fill me up like food?
What's in a protein powder?
Why does a smoothie need protein, and how much?
What goes in a good smoothie?
How much sugar is in a smoothie, and which kind counts?
What does blending do to fruit?
What should you order at a smoothie chain?
Who should build their smoothie differently?
Snap your shake once, then log it every morning with one tap. Open Gyroscope
