Coffee (Black)
No glucose impact; may modestly support metabolic rate.
FatTonic Facts
Coffee (Black) · per serving 1 cup
Excellent · strongly supports fat-burning
| Factor | Amount | Points |
|---|---|---|
| Start | 100.0 | |
| Glycemic load | 0 | 0.0 |
| Sugar (g) | 0 | 0.0 |
| Processing | whole | 0.0 |
| Fiber (g) | 0 | 0.0 |
| Protein (g) | 0 | 0.0 |
| Glycemic index | not tested | |
| Carbs (g) | 0 | |
| Fat (g) | 0 |
Score model v1
Nutrients: USDA FoodData Central, record 171890 (Beverages, coffee, brewed, prepared with tap water), public domain, checked 2 Oct 2026.
Glycemic index: not tested — too little carbohydrate to test (University of Sydney GI FAQ); the score assumes 0.
Per 100 g (USDA record; serving 237 g): carbs 0, sugar 0, fiber 0, protein 0.1, fat 0 g.
What this means for fat-burning
Why this score: glycemic load 0 set it, 0.0 points. Source: USDA FoodData Central, FDC 171890.
See how your whole day scores — free Metabolic Score →This food and 199 more, scored on your phone.
Among the 200 rated foods
Coffee (Black) scores 100, rated Excellent. It scores higher than 75% of the 200 rated foods.
Rated foods per band: Avoid 0–19: 11; Poor 20–39: 23; Moderate 40–59: 34; Good 60–79: 45; Excellent 80–100: 87.
Frequently asked questions
Does coffee (black) spike insulin?
Glycemic load 0 for 1 cup; FatTonic Score 100/100 — it strongly supports fat-burning.
Is coffee (black) good for fat loss?
Excellent (100/100): coffee (black) strongly supports fat-burning.
Better in drinks
Coffee (Black) ties for the best in drinks on this index.