Is Crabmeat High in Potassium? A Complete Nutritional Guide

December 3, 2025 •

3 min read

A 100g serving of cooked crabmeat typically contains around 262-350mg of potassium, which is approximately 7-8% of the daily value. This raises the question: is crabmeat high in potassium, or can it be part of a low-potassium diet?

Quick Summary

Crabmeat is considered a moderate source of potassium, not a high one, providing a modest percentage of your daily needs per serving. Its potassium content is significantly lower than many fruits and vegetables, making it suitable for most diets, including those monitoring potassium levels.

Key Points

Moderate Potassium: Crabmeat is not considered a high-potassium food, containing about 262-350mg per 100g serving.
Daily Value Percentage: A standard serving of crabmeat provides only a modest portion, typically 7-8%, of the average adult's daily potassium requirement.
Safe for Most Diets: For healthy individuals, crabmeat is a safe and nutritious source of potassium and other vital nutrients.
Suitable for Low-Potassium Diets: Due to its moderate levels, crabmeat can often be included in low-potassium diets, unlike many fruits and vegetables.
Rich in Other Nutrients: Besides potassium, crabmeat is an excellent source of protein, vitamin B12, zinc, and omega-3 fatty acids.
Preparation Matters: Canned crabmeat often has higher sodium content due to preservation, so check labels, especially if monitoring sodium intake.

Understanding Potassium in Crabmeat

While crabmeat contains potassium, it is not considered a high-potassium food when compared to many other foods like potatoes, bananas, and beans. A 100g (3.5oz) serving of cooked crabmeat offers approximately 262-350mg of potassium. The exact amount can vary slightly depending on the crab species and how it is prepared (fresh, canned, or cooked). For individuals without specific dietary restrictions, this is a healthy and beneficial inclusion, as potassium is an essential mineral for nerve and muscle function and blood pressure regulation. However, for those on a low-potassium diet, particularly for health conditions like chronic kidney disease (CKD), understanding the precise potassium levels is important.

Potassium Content by Crab Variety

Not all crabmeat is the same. The specific species and part of the crab can influence its nutritional profile, though the potassium level generally remains in the moderate range. Different types of crabmeat are used for different culinary purposes, so it's good to know the distinctions:

King Crab: Offers around 173mg of potassium per 3oz serving. This is on the lower end of the spectrum for crab varieties.
Snow Crab: Provides approximately 170mg of potassium per 3oz serving. Similar to King Crab, it's a relatively low-potassium option within the crab family.
Blue Crab (canned): A cup (135g) contains about 350mg of potassium. While this is higher than other types, it still falls within the moderate range.

Other Nutritional Highlights of Crabmeat

Beyond its moderate potassium content, crabmeat is a nutrient-dense food with several other benefits:

High-Quality Protein: Crab is an excellent source of protein, essential for building and repairing muscle tissue.
Rich in Minerals: It provides high levels of zinc, crucial for immune function, and selenium, an important antioxidant.
Vitamin B12: Crabmeat is particularly rich in vitamin B12, which supports nerve function and red blood cell production.
Omega-3 Fatty Acids: Contains heart-healthy omega-3s, which are known to reduce inflammation and support cardiovascular health.

Comparison Table: Crabmeat vs. Other Foods

Here is a comparison of potassium content per 100g serving to provide context:


Food Item	Approximate Potassium (mg) per 100g	Potassium Category
Cooked Crabmeat	~262-350	Moderate
Baked Potato	~535	High
Banana	~358	High-Moderate
Salmon (Wild Atlantic)	~439	High
Clams (3oz)	~533	High
Beef (3oz)	~315	Moderate
Chicken Breast (3oz)	~332	Moderate

Note: Potassium levels can vary based on preparation method and specific serving size.

Dietary Considerations for Potassium

For the average person, incorporating crabmeat into a balanced diet is perfectly healthy. It offers essential minerals and vitamins without an excessive load of potassium. However, for those with conditions like kidney disease, where the body's ability to filter excess potassium is impaired, intake must be carefully monitored. On a low-potassium diet, a moderate amount of crabmeat might be permitted, but high-potassium foods like potatoes and bananas are often restricted. It is always best for individuals with dietary restrictions to consult a healthcare professional or registered dietitian.

Conclusion: The Final Verdict on Crabmeat and Potassium

Is crabmeat high in potassium? The answer is no; it is a moderate source. For most people, it's a nutritious seafood option that contributes to overall health with its protein, minerals, and vitamins. For individuals on a low-potassium diet, crabmeat is a generally safe and flavorful protein source, but as with any dietary modification, moderation and professional guidance are key. You can find more information on dietary management for kidney health on the National Kidney Foundation website. By understanding the nutritional content and your individual needs, you can confidently make informed dietary choices.

Disclaimer: The information provided is for general knowledge and informational purposes only, and does not constitute medical advice.

Frequently Asked Questions

Crabmeat is generally considered a moderate-potassium food. Its potassium content is significantly lower than many high-potassium foods like potatoes and bananas, making it a viable option for many low-potassium diets when eaten in moderation.

A 100g (3.5oz) serving of cooked crabmeat provides approximately 262-350mg of potassium, which is around 7-8% of the Daily Value for potassium.

Yes, there is some variation. For instance, a 3oz serving of King or Snow crab has about 170-173mg of potassium, while canned Blue Crab can be higher.

Canned crabmeat is generally fine for a low-potassium diet from a potassium perspective. However, be mindful of the added sodium in canned products, which can be a concern for some health conditions.

Crabmeat has less potassium than salmon. For example, a 3.5oz serving of salmon contains over 400mg of potassium, while crabmeat in the same serving size has significantly less.

Individuals on a strict low-potassium diet, particularly those with chronic kidney disease (CKD), should monitor their crabmeat intake and consult a healthcare provider.

While the core potassium content of the meat won't drastically change, cooking methods don't significantly alter mineral levels. However, using high-sodium seasonings or butter can affect the overall nutritional profile.