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Black coffee Calories
Zero calories, antioxidant source, contains caffeine
CALORIES
GI
POTASSIUM
FIBER
Black coffee Nutrition Facts
Selected: 100 g
2
KCAL / 100G
Carbs
0g
· 0%
Protein
0.1g
· 100%
Fat
0g
· 0%
Fiber
0g
Black coffee Vitamins & Minerals
Vitamins
B3
0.7mg · 4% DV
B2
0.02mg · 2% DV
B5
0.06mg · 1% DV
B6
0.01mg · 1% DV
Minerals
Potassium ⭐
92mg · 3% DV
Magnesium
7mg · 2% DV
Phosphorus
7mg · 1% DV
Calcium
2mg · 0% DV
Black coffee Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
Is Black coffee Processed?
NOVA 2
Minimally Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Black coffee Contain Allergens?
No known major allergens
Which Diets Is Black coffee Good For?
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
✓ Suitable
Low FODMAP
— Not suitable
Black coffee Fat Profile
SATURATED
0g
MONOUNSATURATED
0g
POLYUNSATURATED
0g
Foods Similar to Black coffee
Black coffee — Frequently Asked Questions
Can black coffee be drunk on an empty stomach?
Many people tolerate it fine, but in others it can worsen stomach irritation, reflux, or jitteriness. If it bothers you, having it with food is often easier on the stomach.
Is black coffee better before or after a workout?
For most people, it is more useful before training because caffeine can improve alertness and perceived energy. After training it is still fine, but late intake may interfere with sleep and recovery.
Does black coffee dehydrate you?
Not in the way people often claim, especially in regular coffee drinkers. It can contribute to fluid intake, but it should not replace water entirely.
How much can black coffee affect sleep?
That depends on your caffeine sensitivity and the time of day you drink it. Afternoon or evening coffee can make it harder to fall asleep or reduce sleep quality.
Does adding milk change how coffee affects you?
Milk can soften the taste and may feel gentler on the stomach for some people, but it also changes the drink from plain black coffee. The caffeine effect does not disappear, though the overall experience may feel less harsh.
Can black coffee help headaches or make them worse?
Caffeine can relieve headaches in some people, which is why it appears in some pain medicines. But too much coffee, or suddenly stopping it after regular use, can also trigger headaches.
Can black coffee raise blood pressure?
It can cause a short-term rise in blood pressure, especially in people who are sensitive to caffeine. Anyone with hypertension should monitor their response and ask a clinician if unsure.
Does black coffee affect iron absorption?
Yes, coffee can reduce absorption of non-heme iron, the type found in many plant foods. If iron status is a concern, it is better not to drink it right with iron-focused meals.
How should black coffee be stored?
Coffee beans or grounds keep best in an airtight container away from heat, light, air, and moisture. Refrigeration is usually not ideal because repeated opening can expose coffee to humidity and odors.
Why does black coffee sometimes taste bitter or sour?
Bitterness often comes from over-extraction, very fine grinding, or water that is too hot. Sourness is more often linked to under-extraction, a grind that is too coarse, or brewing for too short a time.
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Nutrition data compiled from USDA FoodData Central and scientific sources.