Protein Per Dollar: Cheapest Protein Sources Ranked 2026
2026 Methodology
We collected data on common protein sources from major US retailers including Walmart and Instacart, cross-referencing nutritional values from the USDA FoodData Central. The rankings are based on protein per dollar (grams of protein you get for $1.00 USD). Prices represent approximate standard retail pricing for 2026.
| Rank | Food Source | Category | Serving Size | Protein / Srv | Price / Srv | Protein per $1 |
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Frequently Asked Questions
What is the cheapest source of protein?
Based on 2026 retail data, dry legumes like lentils and black beans are typically the cheapest sources of protein per dollar, often yielding over 50g of protein per dollar. Among animal sources, whole chicken and eggs are usually the most cost-effective.
How much protein is in an egg?
A standard large egg contains approximately 6 grams of high-quality, highly bioavailable protein.
Is chicken breast the best protein source?
Chicken breast is highly popular because it is very lean (high protein, low fat), making it great for cutting or pure protein intake. While it is cost-effective, chicken thighs or whole chickens offer even better value per dollar.
Are protein powders worth the money?
Yes, protein powders like whey and casein are extremely cost-effective. They often rank in the top tier for protein per dollar, providing around 25g+ of protein per dollar, while also offering unmatched convenience.
What is the cheapest plant-based protein?
Dry lentils, dry beans, and oats are among the absolute cheapest plant-based proteins available, providing tremendous value both financially and nutritionally.