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Protein in coffee: 0.3 g in 1 cup of coffee

There are 0.3 g of protein in 1 cup of coffee (237 g). 100 g of coffee has 0.1 g of protein and 1 kcal. The values come from USDA FoodData Central, and the lookup below works out any other amount.

Protein

0.3g protein

in 1 cup of coffee (237 g)

0.1 g of protein and 1 kcal in 100 g

USDA FoodData Central, FDC ID 171890

Protein in coffee per portion

Protein in each portion the USDA record lists, and in 100 g:

Protein in coffee per portion
Portion	Weight	Protein
1 cup of coffee	237 g	0.3 g
6 fl oz of coffee	178 g	0.2 g
100 g of coffee	100 g	0.1 g

Protein per 100 kcal

There are only 1 kcal in 100 g of coffee, so protein per 100 kcal says little about it. 100 g of coffee has 0.1 g of protein. In our table of 50 foods ranked by protein per 100 g, this food is number 50.

Coffee compared with similar foods

Protein per 100 g and per 100 kcal, from the USDA record of each food:

Coffee compared with similar foods
Food	Protein per 100 g	Protein per 100 kcal
Coffee	0.1 g	very little energy
Milk	3.2 g	5.2 g
Soy milk	3.3 g	6.1 g

See all 50 foods ranked by protein in the protein in foods table. For the published protein reference for your body weight, see the protein calculator.

About these values

The record is black coffee brewed with tap water. Milk added to coffee brings its own protein. The USDA record is "Beverages, coffee, brewed, prepared with tap water" (SR Legacy, FDC ID 171890). It gives 0.12 g of protein and 1 kcal per 100 g.

Protein in a portion is its weight times the protein per 100 g, divided by 100. For 1 cup of coffee: 237 × 0.12 ÷ 100 = 0.3 g. Values on this page are rounded to 0.1 g.

A packaged food's own label can differ from the USDA average. When you have the label, its numbers are the ones for that product.