How many calories in a Jamba Juice Strawberry Banana smoothie?

January 6, 2026 •

4 min read

According to nutrition data, a 12 oz. Jamba Juice Strawberries Gone Bananas smoothie contains around 170 calories. Understanding exactly how many calories in a Jamba Juice Strawberry Banana can help you make a more informed choice about your drink and how it fits into your daily dietary goals.

Quick Summary

This guide breaks down the calorie count and nutritional details of the Jamba Juice Strawberry Banana smoothie across different sizes. It covers ingredients, sugar content, and provides a comparison to other Jamba options, empowering you to make healthier smoothie decisions.

Key Points

Calorie Count Varies by Size: A 12 oz. Jamba Juice Strawberries Gone Bananas smoothie contains about 170 calories, with larger sizes being significantly higher.
Beware of High Sugar Content: Much of the calorie and sugar count comes from added juice blends and frozen yogurt, not just the whole fruit.
Choose Smaller Sizes: Selecting a Kid's or Small size is the simplest way to reduce your calorie and sugar intake.
Customize Your Order: You can reduce calories by asking for less juice blend or frozen yogurt, or by opting for low-sugar milk alternatives.
Add a Protein Boost: Incorporating a protein boost can help increase satiety and balance the sugar load for a more filling snack.
Read the Full Nutritional Breakdown: Always consider the full nutritional information, including fiber and protein, when evaluating the overall healthiness of your smoothie choice.

Understanding the Nutritional Breakdown of the Strawberry Banana Smoothie

The classic Jamba Juice Strawberry Banana smoothie, often appearing on menus as the Strawberries Gone Bananas smoothie, is a popular choice for its classic flavor combination. However, the calorie count varies significantly depending on the size you order. Beyond just the calories, it's important to consider other nutritional factors, like the sugar and fiber content, to assess its health impact accurately. The smoothie typically includes strawberries, bananas, a juice blend (like apple-strawberry), and non-fat vanilla frozen yogurt. While real fruit provides some nutrients, the addition of fruit juice concentrates and frozen yogurt can quickly increase the sugar and calorie load.

Official Jamba Juice Strawberry Banana Calories by Size

Jamba Juice's menu items, including the Strawberry Banana smoothie, come in different sizes, each with its own specific calorie and nutritional profile. The most accurate data is based on the 12 oz. size of the Strawberries Gone Bananas Smoothie, which is often listed online. While some nutritional information is for similar or archived products, it provides a reliable estimate for current offerings. Variations in recipes or locations might lead to slight differences, but the general range should remain consistent.

Kid's Size (10 fl. oz.): Approximately 140-150 calories. This is the lowest-calorie option, making it a suitable treat for children or a light snack.
Small (12 fl. oz.): Around 170 calories. This is a popular standard size and provides a moderate calorie intake for a quick refreshment.
Medium (16 fl. oz.): While specific nutritional info for a classic medium Strawberries Gone Bananas is harder to find, it can be estimated to be in the 220-250 calorie range, given the increase in volume and ingredients.
Large (22 fl. oz.): A large classic smoothie would likely fall into the 300-400 calorie range, making it a substantial meal replacement.

Deconstructing the Ingredients and their Impact

The nutritional density of your Strawberry Banana smoothie is a sum of its parts. Jamba uses a combination of natural and concentrated ingredients, which affects the final calorie and sugar content.

Fruits: Both strawberries and bananas are excellent sources of vitamins, minerals, and fiber. However, a banana, in particular, adds a significant amount of natural sugar and carbohydrates. Strawberries contribute vitamin C.
Juice Blend: A key ingredient in many Jamba smoothies is a juice blend, often from concentrate, which contributes a large portion of the sugar and calories without the fiber found in whole fruit. For the classic Strawberry Banana, this might be an apple-strawberry juice blend.
Frozen Yogurt: The non-fat frozen yogurt adds a creamy texture and some protein, but it also contributes to the sugar and calorie count. It's often the second major source of added sugar in the smoothie.
Ice: The addition of ice is calorie-free but helps with texture and consistency.

Making Healthier Choices: Modifications and Swaps

For those who are mindful of their sugar and calorie intake, there are several ways to enjoy a Jamba Juice smoothie without overdoing it. These modifications can dramatically reduce the total calories and sugar.

Size Matters: Opting for a smaller size, like the Kid's or Small, is the easiest way to control calories and portion size. This is a simple but effective strategy.
Skip the Juice Blend: Asking for less or no juice blend and opting for a low-sugar alternative like unsweetened almond milk can significantly lower the sugar content. This might change the flavor slightly but offers a much healthier profile.
Add a Boost: While some boosts add calories, others can provide nutritional benefits without excess sugar. A protein boost can add satiety and help balance the sugar content. A fiber boost can also be beneficial.
Custom Order: You can ask for a modified version with less or no frozen yogurt to reduce the added sugars. Some locations may offer options like Greek yogurt or sorbet alternatives.

Strawberry Banana vs. Other Popular Jamba Smoothies

To put the Strawberry Banana smoothie's nutritional value into perspective, let's compare it with a few other popular Jamba options based on a standard 16 fl. oz. size (estimates based on available data).


Smoothie Name	Estimated Calories (16 fl. oz.)	Sugar Content (g)	Protein (g)	Key Ingredients
Strawberries Gone Bananas	~220-250	~40-50	~3	Strawberries, Bananas, Juice Blend, FroYo
Caribbean Passion	248	52.4	1.5	Passionfruit-Mango Juice, Strawberries, Peaches, Orange Sherbet
Mango-A-Go-Go	~300-350	~70-80	~2	Mangos, Passionfruit-Mango Juice, Pineapple Sherbet
PB & Banana Protein	459	38.6	27.7	Peanut Butter, Banana, Milk, Protein Powder

Please note: Data for the Strawberries Gone Bananas is based on estimates for the 16 fl. oz size. Other values sourced from provided search results for different sizes. Exact nutritional information can vary based on store preparation.

Conclusion

While a Jamba Juice Strawberry Banana smoothie can be a delicious treat, its calorie and sugar content can be significant, especially in larger sizes and due to the use of juice blends and frozen yogurt. By understanding the nutritional breakdown and making smart adjustments like choosing smaller sizes or modifying ingredients, you can still enjoy this classic flavor while keeping your health goals in mind. For the most accurate and up-to-date nutritional information, it is always best to consult Jamba Juice's official website or nutritional calculator.

Disclaimer: The information provided in this article is for general knowledge and informational purposes only. It does not constitute medical advice. Please consult with a healthcare professional or registered dietitian for personalized dietary advice.

Frequently Asked Questions

The classic Jamba Juice Strawberry Banana smoothie (Strawberries Gone Bananas) is made with strawberries, bananas, apple-strawberry juice, and non-fat vanilla frozen yogurt.

While it contains real fruit, the healthiness is debatable due to the high sugar content from juice concentrates and frozen yogurt, which contribute to a higher calorie count, especially in larger sizes.

Yes, you can make it healthier by ordering a smaller size, asking for a reduced amount of juice blend, opting for unsweetened almond milk, and adding a protein or fiber boost.

The Strawberry Banana smoothie is moderately caloric compared to other Jamba options. For example, a 16 oz. Caribbean Passion has a similar calorie count, but a large Mango-A-Go-Go can be higher, and a protein smoothie like the PB & Banana can be much higher in calories.

The sugar content is high due to the use of concentrated fruit juice blends and sweetened additions like frozen yogurt, which add sugar without the fiber found in whole fruits.

Yes, Jamba Juice offers a kid's size, often called the 'Strawberries Gone Bananas Kids Smoothie', which contains around 140-150 calories for a 10 fl. oz. serving.

Yes, Jamba Juice does use real, frozen fruit in their smoothies. However, they also rely on fruit juice concentrates, which can increase the overall sugar and calorie content.