Ready & Packaged Foods
All →Vegetables & Legumes
All →Desserts & Confectionery
All →Meat & Protein
All →Grains & Bakery
All →Beverages
All →Milk & Dairy
All →
Low calorie, antioxidant source, contains caffeine
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 cup (medium) of 21-Day Coffee (240 g) has 5 calories. That works out to 2 calories per 100 g. It contains 0.5 g of carbs, 0.7 g of protein, 0.2 g of fat and 0 g of fiber. Its 0.7 mg of B3 covers 5% of the Daily Value. Its glycemic index is 0 (low), so it raises blood sugar slowly.
Selected: 1 cup (medium) · 240 g
5
KCAL / 240G
Carbs
0.5g
· 0% DV
Protein
0.7g
· 1% DV
Fat
0.2g
· 0% DV
Fiber
0g
· 0% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 30% · Protein 42% · Fat 28%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 5 kcal | |
| Total fat | 0.2 g | 0% |
| Saturated fat | 0.02 g | 0% |
| Trans fat | 0 g | |
| Sodium | 4.8 mg | 0% |
| Total carbohydrate | 0.5 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 0.7 g | 1% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
Log this food in EatBetter
100,000+ people use it
📸 Scan the code to get the app free.

| Serving | Amount | Calories |
|---|---|---|
| 1 cup (medium) | 240 g | 5 kcal |
| 1 piece (mini) | 60 g | 1 kcal |
| 100 g | 100 g | 2 kcal |
| 1 serving (small) | 120 g | 2 kcal |
| 1 cup (small) | 180 g | 4 kcal |
| 1 serving (medium) | 240 g | 5 kcal |
| 1 cup (large) | 350 g | 7 kcal |
| 1 serving (large) | 350 g | 7 kcal |
Calculated from 2 calories per 100 g.
21-Day Coffee is a name used for coffee products marketed around a 21-day drinking plan. The name alone does not identify a standard recipe, so ingredients and directions can differ between products.
No, 21-Day Coffee has not been shown to cause weight loss by itself. Caffeine may temporarily increase alertness, but drinking the product does not guarantee fat loss or replace balanced meals.
The ingredients in 21-Day Coffee depend on the specific product. Some products may include additions beyond coffee, so read the ingredient list rather than assuming every product with this name has the same formula.
Prepare 21-Day Coffee according to the directions on its package. Products may differ in form and ingredients, so there is no single preparation method or serving instruction that applies to every 21-Day Coffee.
Drink 21-Day Coffee earlier in the day if caffeine affects your sleep. Follow the product’s directions, and avoid treating a suggested schedule as universal because products sold under this name may have different formulations.
It can be: 21-Day Coffee is often presented as a product or a timed drinking plan, while regular coffee may simply be brewed coffee. Check the ingredients to find out what, if anything, has been added.
Yes, but 21-Day Coffee may cause nausea, reflux, or stomach discomfort when consumed without food, as coffee can for some people. If that happens, have it with or after a meal and follow the product directions.
Many 21-Day Coffee products contain caffeine, but the name does not guarantee a particular amount or even the same formula across brands. Check the package, especially if you are limiting caffeine or are sensitive to it.
Yes, 21-Day Coffee may cause jitters, a racing heartbeat, stomach discomfort, or poor sleep, particularly if it contains caffeine or other active ingredients. If you take medication or have a health condition, ask a healthcare professional before using it.
Ask your prenatal healthcare professional before using 21-Day Coffee during pregnancy, because caffeine intake and added ingredients both matter. The product name does not reveal its full formulation, so bring the ingredient list when you ask.
Vitamins
B3
0.72mg · 5% DV
B2
0.05mg · 4% DV
B5
0.17mg · 3% DV
B1
0.02mg · 2% DV
Minerals
Manganese
0.12mg · 5% DV
Potassium ⭐
120mg · 4% DV
Copper
0.02mg · 2% DV
Phosphorus
17mg · 2% DV
Sodium
4.8mg · 0% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 5 calories in 1 cup (medium) (240 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
21-Day Coffee is a coffee drink whose name suggests a set-length routine; the exact coffee type and any added ingredients can vary by product, so check the preparation directions on the pack. Prepared as a plain coffee, it has a roasted aroma, some bitterness and a light, fluid texture.
People drink coffee in many ways around the world: serve it hot on its own, or add milk or a sweetener to suit your taste. It can work as a simple morning drink or an afternoon break, though its caffeine may not suit everyone late in the day. Plain coffee is very low in calories—about 2 per 100 g—and contains caffeine. Keeping it unsweetened makes it a lighter choice.
Low
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Medium
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
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.
No known major allergens
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
SATURATED
0.02g
MONOUNSATURATED
0.02g
POLYUNSATURATED
0.02g
Ask the AI nutrition coach — calories, portions, alternatives and more, answered in seconds in the app.
Nutrition data compiled from USDA FoodData Central and scientific sources.