Black Fat Calculator

The Black Fat Calculator helps you measure the fat in naturally dark foods — black olives, black sesame seeds, dark chocolate, black soybeans, and more. Despite the playful name, it’s a practical portion tool for anyone tracking fat grams, cutting calories, or following a higher-fat eating pattern.

Just pick a food from the list, enter your portion in grams or ounces, and the calculator instantly returns total fat, saturated fat, monounsaturated and polyunsaturated fat, plus the calories coming from fat. The daily-value percentage uses the FDA reference of 78 grams of total fat per 2,000-calorie diet, so you can see how one serving fits into your day.

Because cooked and dried foods differ in water content, the calculator works best with the exact state listed — cooked beans, raw berries, whole seeds. Use the quick-grab buttons to test common portion sizes, and use the result table to spot the fat profile of your favourite dark foods.

🧮 Black Food Fat Calculator

Fat per portion for naturally dark foods.

Food

Portion size

Formula Explained

This calculator uses a straightforward proportion: if a food contains F grams of fat per 100 grams, then a portion of W grams contains W / 100 × F grams of fat. When you enter ounces, the tool first converts to grams (1 oz = 28.35 g), then applies the same proportion.

Total fat → calories: multiply fat grams by 9, because each gram of fat provides about 9 kilocalories. The daily-value percentage is based on the FDA reference value of 78 g of total fat for a 2,000-calorie diet.

This method is most reliable when the food is weighed in the same state described in the nutrition data — cooked beans should be weighed after cooking, and seeds or nuts weighed raw, because water changes the fat density.

Fat Content Quick Reference

These representative values are rounded from USDA FoodData Central and common nutrition databases. Use them as a guide; packaged products can vary by brand and recipe.

Food (per 100 g)	Total fat	Saturated	Monounsaturated	Polyunsaturated
Black olives (canned)	10.9 g	1.4 g	8.1 g	1.2 g
Black sesame seeds	47.5 g	6.6 g	18.8 g	21.6 g
Dark chocolate (85% cacao)	42.6 g	24.5 g	12.8 g	1.4 g
Black walnuts	59.0 g	3.9 g	12.2 g	40.6 g
Black soybeans (cooked)	6.0 g	0.9 g	1.3 g	3.3 g
Black rice (cooked)	1.3 g	0.3 g	0.4 g	0.5 g
Black lentils (cooked)	0.4 g	0.1 g	0.1 g	0.2 g
Blackberries	0.5 g	0.01 g	0.05 g	0.28 g
Black beans (cooked)	0.5 g	0.1 g	0.1 g	0.2 g
Black garlic	0.7 g	0.1 g	0.1 g	0.2 g
Black fungus (wood ear)	0.2 g	0.0 g	0.0 g	0.1 g

Worked Examples

Example 1: Black sesame seeds. You weigh out 30 g of black sesame seeds. Since 100 g contains about 47.5 g fat, your portion has 30 ÷ 100 × 47.5 = 14.3 g fat. That provides about 128 kcal from fat (14.3 × 9), or about 18% of the daily value.

Example 2: Dark chocolate square. A 20 g piece of 85% dark chocolate has 20 ÷ 100 × 42.6 = 8.5 g fat. Of that, about 4.9 g is saturated (20 ÷ 100 × 24.5). This illustrates why a small treat can still contribute noticeably to your fat budget.

Example 3: Black beans. Half a cup of cooked black beans (about 86 g) contains only about 0.4 g fat — a reminder that not every dark food is fatty. This is why the food dropdown matters as much as the portion size.

Tips for Tracking Fat in Dark Foods

Weigh solids in grams when possible; measuring cups are less precise for nuts, seeds, and chopped items.
Use raw weights for seeds, nuts, and chocolate. For beans and rice, use cooked weights, matching the database state.
If you eat a mixed dish, calculate the fat from each fatty ingredient separately. The heavy hitters are usually oils, seeds, nuts, olives, and chocolate.
Remember that “fat-free” and “low-fat” versions exist for some black foods — always check the label for exact numbers.

Many dark plant foods contain predominantly unsaturated fat. Black walnuts and black sesame seeds, for example, are rich in polyunsaturated fat; dark chocolate is the exception, with mostly saturated fat from cocoa butter.

Precision Notes

Values in the reference table are averages from USDA FoodData Central and similar sources. Different brands, growing seasons, and recipes can shift fat content by 10–20%, especially for chocolate and processed items. For packaged foods, the Nutrition Facts label is the most accurate source because it reflects the exact product.

Weights also matter: cooked black rice and beans absorb water, so 100 g of cooked food contains less dry weight and therefore less fat per gram than raw. Always choose the matching database state when you weigh your portion. If a recipe uses dried black fungus or soaked black fungus, the fat per 100 g changes because rehydration adds water without adding fat.

Frequently Asked Questions

Why do some “black” foods have so much more fat than others?

Color doesn’t dictate fat content. Black sesame seeds and black walnuts are naturally oil-rich seeds, while black beans and blackberries are mostly carbohydrate, water, and fiber with only trace fat. Always check the per-100 g value rather than assuming a food’s color tells you its fat profile.

Is the fat in black olives or dark chocolate unhealthy?

Not automatically. Olives contribute mostly monounsaturated fat, which many dietary guidance organizations consider heart-friendly. Dark chocolate is higher in saturated fat, mostly from cocoa butter, but it also contains stearic acid, which some research suggests has a neutral effect on blood cholesterol for many people. Treat these foods as part of your overall fat budget rather than as “good” or “bad” in isolation.

How much total fat should I eat per day?

For a 2,000-calorie diet, the FDA uses 78 g of total fat as a Daily Value reference. That works out to about 35% of calories from fat. Most adults can use this as a general ceiling or reference, but individual targets range from 20–35% of calories depending on goals and health conditions. A registered dietitian or a macro calculator can help you set a personal daily fat range. For authoritative nutrient data, search USDA FoodData Central, and read the FDA’s Daily Value guidance.