The Black Protein Calculator estimates how much protein you get from black beans, black lentils, black soybeans, black rice, black quinoa, and black sesame seeds — a handy tool for anyone following a plant-based diet, tracking macros, or simply curious about the nutritional value of dark-hued foods.
Just pick a food, enter your portion size in grams, ounces, cups, or tablespoons, and hit Calculate. The tool returns total protein, along with calories and a percent-Daily-Value estimate based on a 50-gram protein reference. You'll also see a clear breakdown of the formula so you know exactly how the number is derived.
Useful for meal planning, recipe scaling, and comparing protein-dense options. Because these foods are all plant-based, the calculator is especially relevant for vegetarians and vegans who want to hit their protein targets.
🥗 Black Protein Calculator
Estimate protein, calories, and %DV for black beans, lentils, soybeans, rice, quinoa, and sesame seeds.
How to Use This Tool
Start by selecting a food from the dropdown. Note that cooked and dry versions are listed separately because protein density changes dramatically with hydration. Dry beans may look high-protein by weight, but once cooked they absorb water and protein per 100 grams drops. Then enter a portion amount using the number box and choose your unit — grams, ounces, cups, or tablespoons. Quick-fill buttons for common portions (½ cup, 1 cup, 100 g, 1 oz) make it faster.
Press Calculate to see the protein in grams, estimated calories, and a percent daily value based on a 50-gram reference. The breakdown shows the density value used for the selected food and the exact calculation.
Tip: Weighing food in grams gives the most accurate result. Cup measurements vary slightly based on how the food is packed, but they are close enough for everyday tracking.
The Formula: How Protein Is Estimated
Protein content is calculated from a simple proportion:
Protein (g) = weight in grams × protein per 100 g / 100
For example, if black lentils (raw) have 24.6 g protein per 100 g and you serve 150 g, the calculation is 150 × 24.6 / 100 = 36.9 g protein. The tool uses the same process for calories, using each food's energy density per 100 g.
Nutrition data are average values from food composition databases, so small batch-to-batch variation is normal. The calculator assumes typical cooked preparation without added fats or seasonings.
Protein percentage of calories varies a lot across these foods. For instance, black soybeans are relatively high in protein and fat, while black rice provides mostly carbohydrates. This tool only reports protein grams and calories, not a full macro split.
Worked Examples
Example 1: 1 cup of cooked black beans
Cooked black beans contain about 8.9 g protein per 100 g. One cup weighs roughly 172 g. The calculation: 172 × 8.9 / 100 = 15.3 g protein, with about 229 kcal.
Example 2: 2 tablespoons of black sesame seeds
Black sesame seeds have about 17.7 g protein per 100 g. One tablespoon weighs about 9 g. Two tablespoons = 18 g. Protein = 18 × 17.7 / 100 ≈ 3.2 g. They add a useful sprinkle of protein and healthy fats to salads and stir-fries.
Example 3: 100 g dry black rice
Dry black rice provides about 8 g protein per 100 g, plus substantial carbs. After cooking, 100 g of dry rice becomes roughly 250–300 g cooked, making the protein per cooked serving lower by weight.
Reference Data for Black Protein Foods
Average nutrition values per 100 grams. Cup weights are approximate, based on typical cooked or dry volume.
| Food | Protein (g/100g) | Calories (kcal/100g) | 1 cup weight |
|---|---|---|---|
| Black beans, dry | 21.6 | 339 | 194 g |
| Black beans, cooked | 8.9 | 132 | 172 g |
| Black lentils, dry | 24.6 | 352 | 192 g |
| Black lentils, cooked | 9.0 | 116 | 198 g |
| Black soybeans, cooked | 16.6 | 173 | 172 g |
| Black rice, dry | 8.0 | 356 | 180 g |
| Black rice, cooked | 3.5 | 110 | 195 g |
| Black quinoa, dry | 14.1 | 368 | 170 g |
| Black quinoa, cooked | 4.4 | 120 | 185 g |
| Black sesame seeds | 17.7 | 573 | 144 g |
These values are rounded and reflect common USDA and food-label data. For precise tracking, check the label on your specific brand.
Pro Tips & Common Mistakes
- Always check whether a recipe calls for dry or cooked beans. Confusing them can double or halve your protein estimate.
- For seeds like black sesame, use weight rather than cups for accuracy. A tablespoon of whole seeds weighs less than a tablespoon of ground seeds.
- Rinsing canned black beans can lower sodium but protein is not significantly affected.
- Don't forget that protein quality matters. Plant proteins are usually lower in one or more essential amino acids, so eat a variety of legumes, grains, nuts, and seeds throughout the day.
Mistake: Using the raw/cooked food's nutrition data for the wrong form. If you weigh dry rice but enter "cooked rice" values, your protein estimate will be far too low.
Frequently Asked Questions
Is black rice a good protein source? Compared to legumes, black rice is modest in protein — about 8 g per 100 g dry. It works best alongside beans or lentils to form a more complete amino acid profile.
How does the daily value for protein work? The % DV shown uses a 50 g reference, which is typical for general nutrition labels on a 2,000-calorie diet. Your actual need depends on body weight and activity: around 0.8 g per kg of body weight for sedentary adults, more for athletes.
Why do canned black beans have different numbers? Canned beans are packed with water and often have slightly lower protein per 100 g than home-cooked beans. They are still a convenient option — just adjust the portion.
For deeper macro data on other beans, see the beans nutrition calculator or the protein calories per cup calculator.