The price tag on the shelf tells you nothing useful. What matters is how many grams of protein you're getting per dollar — and that number changes every time gas prices shift, supply chains tighten, or your local store runs a sale.
This page exists to answer one specific question: at the price you actually pay for Black Beans (canned) in 2026, what is your true cost per 100g of protein? We also compare it head-to-head against Dry Lentils — its closest competitor in the Plant-Based category — so you know exactly when to switch.
Full Nutrition Profile: Black Beans (canned)
Here is the complete macronutrient breakdown for Black Beans (canned) per 100g, based on USDA nutritional data. This is the baseline we use for all cost-per-protein calculations on this page.
The Real Cost Breakdown: Black Beans (canned) in 2026
The formula for true protein cost is simple but almost nobody does this math at the store: Price ÷ Total Protein Grams × 100. Here is that math broken out in full for Black Beans (canned) at 2026 US average prices.
| Calculation Step | Value | Notes |
|---|---|---|
| Package price | $0.99 | 2026 US national average (15 oz can) |
| Protein content | 8.9g / 100g | USDA nutritional data |
| Total protein per unit | ~24g | 130g × 3 servings |
| Cost per gram of protein | $0.0026 | $0.99 ÷ 24g |
| True cost per 100g of protein | $0.262 | The number that actually matters |
| National ranking | #6 | Out of 24 tracked protein sources (cheapest = #1) |
Canned black beans may be the single best convenience protein bargain in US grocery stores. At $0.99 per can — ready to eat with zero cook time — each can delivers 3 servings of 8g protein. At $0.26 per 100g of protein, they're cheaper than almost anything in the store and require zero preparation.
Black Beans (canned) vs Dry Lentils: Direct Comparison
The most useful comparison for Black Beans (canned) is against Dry Lentils — the closest competing protein source in the same category. Here is the head-to-head at 2026 national average prices.
$0.99 per 15 oz can
8.9g protein per 100g food
5/5 value rating
Use the calculator below to enter local prices for both items and find which one wins in your specific market.
Drain and rinse to reduce sodium by ~40%. Combine with rice for a complete protein (all essential amino acids present). The rice+beans combo costs under $0.50 per complete protein serving.
Local Price Calculator — Find Your Exact Cost
National averages don't apply to your Kroger. Enter the price you actually pay for Black Beans (canned) and get your real cost per 100g of protein. Optionally, enter what you pay for Dry Lentils to see which one wins in your market.
2026 National Protein Cost Rankings
Below are the top 8 cheapest protein sources tracked by DailyReport247 in 2026, ranked by cost per 100g of protein at US national average prices. Black Beans (canned) ranks #6.
| # | Protein Source | Category | Cost / 100g Protein | Value |
|---|---|---|---|---|
| 1 | 🥤 Whey Protein Concentrate | Supplements | $0.156 | ★★★★★ |
| 2 | 🌱 Plant Protein Powder (Pea/Rice blend) | Supplements | $0.201 | ★★★★☆ |
| 3 | 🥛 Whey Protein Isolate | Supplements | $0.209 | ★★★★★ |
| 4 | 🍖 Chicken Thighs | Poultry | $0.211 | ★★★★★ |
| 5 | 🥛 Skim Milk | Eggs & Dairy | $0.254 | ★★★★★ |
| 6 | 🫘 Black Beans (canned)← You Are Here | Plant-Based | $0.262 | ★★★★★ |
| 7 | 🫘 Chickpeas / Garbanzo Beans (canned) | Plant-Based | $0.288 | ★★★★☆ |
| 8 | 🐟 Canned Tuna (Chunk Light) | Fish & Seafood | $0.302 | ★★★★★ |
These rankings shift when you factor in local store prices, bulk buying, and sale cycles. Use the calculator above to find the true winner for your specific situation.
Where to Buy Black Beans (canned) Cheapest in the US
The national average is just a baseline. Prices for Black Beans (canned)vary by as much as 40–60% depending on store, region, and whether you're buying in bulk.
Aldi ($0.69/can), Walmart Great Value ($0.76/can), or store brand anywhere.
The single highest-impact change most US shoppers can make is switching from buying individual packages to bulk or multi-packs. On Black Beans (canned), this typically reduces the per-unit cost by 25–45% — which translates directly to a lower cost-per-100g-protein. Run that number through the calculator above to see the exact impact in dollar terms.
How 2026 Grocery Inflation Affects Black Beans (canned) Prices
The USDA Economic Research Service projects all food prices will rise 3.6% in 2026, but the impact varies dramatically by category:
| Protein Category | 2026 USDA Price Forecast | Impact on Budget |
|---|---|---|
| Beef & Veal | +10.1% | High — most expensive protein category in 2026 |
| Fish & Seafood | +5.2% | Moderate — canned varieties much more stable than fresh |
| Pork | +1.3% | Low — best value meat category in 2026 |
| Poultry | +0.3% | Very low — most stable major protein in 2026 |
| Eggs & Dairy | −2.1% | Prices declining — best buying opportunity in 2026 |
| Plant-Based / Grains | +2.8% | Moderate — still among the cheapest calories and protein |
Plant-Based items face moderate 2026 inflation pressure — roughly in line with the 3.6% overall grocery forecast. Buying in bulk and timing purchases around sales remains the best hedge.