Protein on a Budget: Comparing the Cost and Nutrition of Eggs, Beans, Canned Fish, and Chicken

How cost per serving is calculated here

Comparing proteins by package price is misleading because package sizes vary widely. Cost per serving is more useful. The figures below use approximate US national average grocery prices and standard serving sizes: one large egg, a half-cup cooked serving of beans (from dried), one 5-ounce can of tuna or sardines, and a 3.5-ounce cooked portion of chicken thigh. Prices shift by region, store, and season, so treat these as illustrative ranges rather than exact quotes. For a broader look at how protein fits into overall grocery spending, see our practical grocery budget framework.

One other thing worth noting: protein quality matters alongside protein quantity. Animal proteins (eggs, fish, chicken) contain all nine essential amino acids in ratios the body uses efficiently. Beans are high in most essential amino acids but lower in methionine. Pairing beans with rice or corn across the day fills that gap without any extra cost.

Eggs: consistent, complete, and fast

A dozen large eggs at a conventional grocery store typically runs between $2.50 and $4.50, putting each egg at roughly $0.20 to $0.38. One large egg has about 6 grams of protein, so a two-egg serving delivers 12 grams of complete protein for well under $1. Eggs also carry vitamins D and B12, choline (important for brain health), and a useful amount of iron.

The main limitation is that eggs alone do not provide fiber. Families who rely heavily on eggs should pair them with vegetables or whole grains. Shelf life is also shorter than canned goods or dried beans, though eggs keep for three to five weeks refrigerated.

Dried beans: the lowest cost per gram

A one-pound bag of dried black beans, pinto beans, or lentils costs between $1.50 and $2.50 and yields roughly 10 to 12 half-cup cooked servings. That puts cost per serving at $0.15 to $0.25. Each half-cup cooked portion provides 7 to 9 grams of protein along with 6 to 8 grams of fiber, which no animal protein source comes close to matching at the same price.

Canned beans are more convenient at roughly $0.90 to $1.50 per can (about 3.5 servings), but the cost per serving rises to around $0.30 to $0.45. For families with planning time, cooking a large batch of dried beans on the weekend and refrigerating or freezing portions is one of the highest-return grocery habits available. The guide to affordable nutrient-dense staples covers beans alongside other high-value pantry items.

Canned fish: the nutritional outlier

A 5-ounce can of chunk light tuna typically costs $1.00 to $1.80 and contains about 25 grams of protein. Sardines in water or olive oil run $1.50 to $3.00 per can and provide 20 to 25 grams of protein per can plus calcium (from the edible bones) and a meaningful dose of omega-3 fatty acids. Neither eggs, beans, nor chicken thighs deliver omega-3s in comparable amounts.

Canned fish is also shelf-stable for two to five years, which makes it a reliable pantry item that reduces waste. The main concern some families have is sodium: many canned fish products are moderately high in sodium, so people managing blood pressure should check labels. For general healthy adults, the sodium levels in one to two weekly servings are not a problem, though anyone with specific health conditions should consult a healthcare professional.

Chicken thighs: the affordable meat option

Boneless, skinless chicken breast gets most of the attention, but bone-in, skin-on chicken thighs typically cost $1.00 to $1.50 per pound less. A bone-in thigh weighing around 5 to 6 ounces raw yields a 3.5-ounce cooked portion with about 25 grams of protein at a per-serving cost of roughly $0.60 to $1.00. Chicken thighs have more fat than breast meat, mainly from the skin, which can be removed after cooking to reduce fat intake without sacrificing moisture during cooking.

Chicken is one of the more versatile proteins in a family kitchen. It works in soups, rice dishes, tacos, and sheet-pan meals. Buying larger family packs and freezing portions reduces cost further. Understanding where chicken fits in a planned shopping approach is covered in our meal planning vs. spontaneous shopping comparison.

Putting all four together

No single protein covers every nutritional base at the lowest possible price. Beans provide fiber and the lowest cost per gram of protein. Eggs add speed and complete amino acids. Canned fish brings omega-3s and long shelf life. Chicken thighs satisfy the preference for meat-centered meals without a large price penalty.

A practical weekly approach might look like two to three bean-based dinners, two egg-based breakfasts or lunches, one or two chicken thigh meals, and canned fish in a salad or pasta once a week. That rotation costs well under $3.00 per person per day in protein alone at current typical grocery prices, and it delivers a wide spread of nutrients. For a closer look at whether store or generic versions of these products differ nutritionally, the store brand vs. name brand nutrition comparison is worth reading before your next shopping trip.

This article is for general informational purposes only and is not medical or dietary advice. Consult a registered dietitian or qualified healthcare professional for guidance specific to your health needs.