Calories in Coffee

Q: How many calories in each size of coffee?

It depends on the size: cup (150 ml) about 2 kcal; mug (250 ml) about 3 kcal.

Q: Does coffee contain caffeine?

Yes. 1 small coffee (355 ml) has about 144 mg of caffeine; 100 ml has 40.6 mg.

Q: Is coffee low in calories?

Yes. 100 ml of coffee has only 1 kcal.

Q: Will drinking coffee help me lose weight?

It can be part of a diet that loses weight: what counts is the total calories you eat in a day, not any single food. 1 small coffee (355 ml) has about 4 kcal. The calorie calculator works out how many you need.

100 ml of coffee has 1 kcal, and 1 small coffee (355 ml) has about 4 kcal.

1 kcalper 100 ml

4 kcal in 1 small (355 ml)

Very low density · 0.01 kcal per ml

Protein 0.1g 73% of the calories
Carbs 0g 0% of the calories
Fat <0.1g 27% of the calories
Fiber 0g

Per 100 ml. Figures from USDA FoodData Central. Averages across measured samples; a few percent either way is normal. Updated 2026-10-04.

Coffee nutrition facts

A dash means nobody measured it - not that there is none of it.

Per serving: 1 small (355 ml)
Nutrient	Per 100 ml	Per serving
Energy	1kcal	4kcal
Fat	0.02g	0.071g
Saturated Fat	0g	0g
Unsaturated Fat	0.02g	0.071g
Carbs	0g	0g
Sugars	0g	0g
Fiber	0g	0g
Protein	0.12g	0.43g
Salt	0.01g	0.035g

Alcohol	0g	0g
Caffeine	40.6mg	144mg

Monounsaturated	0.015g	0.054g
Polyunsaturated	0.001g	0.004g
Omega-3	0g	0g
ALA	0g	0g
DHA	0g	0g
EPA	0g	0g
Omega-6	0.001g	0.004g
AA	0g	0g
LA	0.001g	0.004g
Cholesterol	0mg	0mg

Vitamin B1 (Thiamine)	0.014mg	0.05mg
Vitamin B2 (Riboflavin)	0.077mg	0.27mg
Vitamin B3 (Niacin)	0.19mg	0.69mg
Vitamin B6 (Pyridoxine)	0.001mg	0.004mg
Vitamin B12 (Cobalamin)	0µg	0µg
Folate (Vitamin B9)	2µg	7.2µg
Vitamin A	0µg	0µg
Vitamin C	0mg	0mg
Vitamin D	0IU	0IU
Vitamin E	0.01mg	0.036mg
Vitamin K	0.1µg	0.36µg
Choline	2.6mg	9.2mg

Calcium	2mg	7.2mg
Copper	0.002mg	0.007mg
Iron	0.01mg	0.036mg
Magnesium	3mg	10.8mg
Phosphorus	3mg	10.8mg
Potassium	49.7mg	176mg
Selenium	0µg	0µg
Zinc	0.02mg	0.072mg

Beta-carotene	0µg	0µg
Lycopene	0µg	0µg
Lutein + zeaxanthin	0µg	0µg
Flavonoids	0.18mg	0.64mg
Flavan-3-ols	0.08mg	0.28mg
Flavonols	0.1mg	0.35mg

Read it as an averageIt is what a laboratory measured, averaged over samples - variety, ripeness and cut all move it, and a few percent either way is normal.

What stands out in coffee

1 small (355 ml) is 4 kcal, about <1% of a 2,000 kcal day.

Low in calories1 kcal per 100 ml
Low in fat0.02 g per 100 ml
Low in saturated fat0 g per 100 ml
Low in sugars0 g per 100 ml
Low in salt0.01 g per 100 ml

Claims follow the EU nutrition claims rules and the "high" warnings the UK/EU front-of-pack labels; the 2,000 kcal day is the reference intake for an average adult.

Calories in different amounts of coffee

50 ml	1 kcal
100 ml	1 kcal
200 ml	2 kcal
355 ml1 small	4 kcal
710 ml2 servings	7 kcal

Any amount ml 4 kcal

Foods with similar calories

Other published foods within reach of 1 kcal per 100 ml, so the number has something to sit against.

Tomatoes 19 kcal more 20kcal / 100 g

Lettuce 19 kcal more 20kcal / 100 g

Asparagus 19 kcal more 20kcal / 100 g

Zucchini 16 kcal more 17kcal / 100 g

Cucumber 15 kcal more 16kcal / 100 g

Celery 14 kcal more 15kcal / 100 g

Questions about coffee

It depends on the size: cup (150 ml) about 2 kcal; mug (250 ml) about 3 kcal.

Yes. 1 small coffee (355 ml) has about 144 mg of caffeine; 100 ml has 40.6 mg.

Yes. 100 ml of coffee has only 1 kcal.

It can be part of a diet that loses weight: what counts is the total calories you eat in a day, not any single food. 1 small coffee (355 ml) has about 4 kcal. The calorie calculator works out how many you need.

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