How Many Calories Are In Costco Yakisoba Noodles? Your Guide to Informed Eating

October 3, 2025 •

4 min read

A single serving of Kirkland Signature Yakisoba Stir Fry from Costco contains approximately 240 calories, though this can vary depending on preparation and exact portioning. This guide will explain precisely how many calories are in Costco yakisoba noodles across different products and offer strategies for integrating this popular dish into a healthy diet.

Quick Summary

This article provides a nutritional analysis of different yakisoba products available at Costco, including variations in calories, macronutrients, and sodium levels. It compares pre-packaged options to a homemade alternative, offering tips for reducing calories and enhancing the dish's overall nutritional profile.

Key Points

Product Dependent Calories: The calorie count for Costco yakisoba varies significantly by product, with the refrigerated Kirkland Signature version at roughly 240 kcal per serving and the frozen Ajinomoto at about 410 kcal.
High Sodium Content: Pre-packaged yakisoba, including those found at Costco, often contains a high amount of sodium, which is important to consider for dietary health.
Carb-Heavy Profile: The noodles are primarily a source of carbohydrates, providing energy but also contributing to the overall calorie count. This makes balancing the meal with other food groups important.
Easily Customizable for Health: You can significantly improve the nutritional profile of yakisoba by adding more fresh vegetables, using leaner proteins like chicken breast or tofu, and reducing the amount of high-sodium sauce.
Homemade Offers Control: Making yakisoba from scratch gives you complete control over ingredients, allowing you to tailor the calorie, sodium, and nutrient content to your specific health goals.
Portion Control is Key: Due to the larger sizes typical of Costco products, it is easy to overconsume. Using a smaller serving size is a simple way to manage your calorie intake.

Understanding the Nutritional Variety of Costco Yakisoba

When shopping at Costco, you may encounter different yakisoba products, each with its own unique nutritional information. The most common varieties include the refrigerated Kirkland Signature Yakisoba Stir Fry from the deli section and the frozen Ajinomoto Vegetable Yakisoba. The calorie count you consume depends on which product you purchase and the portion size you serve yourself.

Kirkland Signature Yakisoba Stir Fry (Refrigerated)

The refrigerated Kirkland Signature Yakisoba Stir Fry, often sold by weight, typically features noodles, chicken, and vegetables. Nutrition information found on Costco's website and nutritional tracking apps indicates a serving contains approximately 240 calories.

Calorie breakdown: Primarily composed of carbohydrates from the wheat noodles and sauce, with protein from the chicken and some fat.
Sodium content: Due to the sauce, this option can be moderately high in sodium. Consuming a single serving might use up a significant portion of your daily recommended sodium intake.

Ajinomoto Vegetable Yakisoba (Frozen)

For a different flavor profile, Costco also carries frozen yakisoba, such as the Ajinomoto Vegetable Yakisoba. This version offers a plant-based alternative. Nutritional data for a 9 oz serving of this product reveals it contains about 410 calories.

Higher calories: The frozen version generally has a higher calorie count per serving than the refrigerated chicken stir fry.
Vegetable-focused: While higher in carbs, it can still provide a good source of fiber and vitamins from the included vegetables.

Comparing Costco Yakisoba Options with a Homemade Version

To make an informed dietary choice, it's helpful to compare these convenient, pre-packaged options with a made-from-scratch alternative. A homemade yakisoba allows for complete control over ingredients, providing an opportunity to reduce calories and sodium while increasing nutrients.


Feature	Kirkland Signature (Refrigerated)	Ajinomoto Vegetable (Frozen)	Homemade Yakisoba (Health-Focused)
Calories (per serving)	~240	~410	Customizable (e.g., ~350 kcal)
Protein Source	Chicken	Vegetables	Lean protein (chicken breast, tofu)
Sodium	High	High	Controllable, using low-sodium soy sauce
Vegetable Content	Moderate	High	High, customized for maximum fiber
Fat Content	Moderate	Moderate	Low, using minimal oil

How to Enjoy Yakisoba Healthily

Regardless of whether you choose a store-bought version or make it at home, there are several ways to boost the nutritional value of your yakisoba meal. Incorporating these strategies can help you stay on track with your dietary goals without sacrificing flavor.

Tips for Reducing Calories and Enhancing Nutrition

Increase the vegetables: Adding extra vegetables like cabbage, carrots, bell peppers, and broccoli will increase your fiber, vitamin, and mineral intake without significantly adding to the calorie count. The added bulk also helps you feel full and satisfied with a smaller portion of noodles.
Choose lean protein: For homemade yakisoba, use lean protein sources like chicken breast, tofu, or shrimp instead of higher-fat options such as pork belly. This increases protein content while reducing saturated fat.
Control the sauce: Yakisoba sauce is often high in sodium and sugar. Make your own using low-sodium soy sauce, less sugar, and a combination of other flavorings like ginger and garlic. When using pre-made sauce, consider using less than the full packet provided.
Use different noodles: While yakisoba noodles are traditionally made from wheat, alternatives exist. Consider using whole wheat noodles for added fiber or shirataki noodles, which are extremely low in calories, as a substitute.
Mind your portion size: The calorie count is per serving, but it's easy to overserve yourself, especially with the large package sizes at Costco. Use a food scale or measuring cup to accurately portion your meal.

The Broader Context: Yakisoba and Your Diet

Yakisoba can be a part of a balanced diet, but its overall healthiness depends on preparation. While pre-packaged options offer convenience, they are often high in sodium and can be a significant source of refined carbohydrates. By prioritizing fresh vegetables, leaner proteins, and homemade, lower-sodium sauces, yakisoba can become a more nutrient-dense and health-conscious meal. Even with store-bought options, portion control and the addition of extra veggies can make a big difference in nutritional impact. Understanding the core components allows you to customize this delicious dish to meet your individual dietary needs.

Conclusion: A Balanced Approach to Yakisoba

In conclusion, the calorie count for Costco yakisoba noodles varies significantly by product, ranging from approximately 240 calories per serving for the refrigerated Kirkland Signature to over 400 for the frozen Ajinomoto version. Beyond calories, it's crucial to consider the high sodium content and carbohydrate load in pre-packaged varieties. By making thoughtful adjustments—such as adding fresh vegetables, opting for leaner proteins, and using less sauce—you can transform this beloved stir-fried noodle dish into a more balanced and nourishing meal. Enjoy yakisoba with moderation and a focus on nutrient-rich enhancements to align it with a healthy diet.

Frequently Asked Questions

The healthiness of Costco yakisoba depends on the specific product and preparation. While they contain vegetables and protein, the pre-made versions are typically high in sodium and calories. For a healthier option, consider customizing with extra fresh vegetables and leaner protein, or opting for a homemade version.

According to nutritional information, one serving of the Kirkland Signature Yakisoba Stir Fry typically contains around 240 calories.

A single 9 oz serving of the frozen Ajinomoto Vegetable Yakisoba from Costco has approximately 410 calories.

Yes, but with careful consideration. Opt for a smaller portion size, add plenty of extra vegetables, and use a low-sodium sauce. The addition of lean protein can also help increase satiety.

To reduce sodium, you can use less of the pre-packaged sauce, dilute it with water or a low-sodium broth, and avoid adding extra salt or high-sodium condiments. For homemade versions, use low-sodium soy sauce.

For lower calories and different nutritional benefits, consider using alternative noodles like shirataki noodles, which have almost no calories, or whole-wheat noodles for extra fiber.

To boost the protein content, you can add extra lean protein sources like grilled chicken breast, tofu, shrimp, or edamame. This will make the meal more filling and nutritionally balanced.