How much protein is in raw bacon?

Raw bacon has 13.7 g of protein per 100 g and 3.8 g per 1 slice raw (28 g). That is 3.5 g of protein per 100 kcal — a modest protein contribution.

Should pork and bacon be weighed raw or cooked?

Weigh it in whichever state you log it, and use the row that matches — this page is the as-listed row. Cooking does not change how many calories are there, only how many grams they are spread across: meat loses water in the pan and gets denser, grains and pasta absorb it and get lighter per gram.

All foods

Pork and baconUSDA SR LegacyFDC 168277

Calories in raw bacon

USDA FoodData Central record for “Pork, cured, bacon, unprepared” — per 100 g, per every USDA serving size, and next to the other pork and bacon rows.

The short answer

Raw bacon: 393 kcal per 100 g. 1 slice raw (28 g) is 110 kcal with 3.8 g of protein. Source: USDA FoodData Central record 168277, "Pork, cured, bacon, unprepared".

Per 100 g

Nutrient	Per 100 g	Share of energy
Energy	393 kcal	100%
Protein	13.7 g	14%
Fat	37.1 g	85%
Carbohydrate	0 g	0%

Raw bacon is 393 kcal per 100 g in USDA FoodData Central (SR Legacy). Of that energy, about 14% comes from protein, 85% from fat and 0% from carbohydrate. That works out to 3.5 g of protein per 100 kcal — a modest protein contribution.

Per serving

The serving sizes USDA lists for this record, priced from the per-100 g figures above. Nothing here is rounded to a “portion” — the gram weight next to each label is what the calories are computed from.

Serving	Weight	Calories	Protein	Fat
100 g	100 g	393	13.7 g	37.1 g
4 oz	113 g	445	15.5 g	42 g
1 slice raw	28 g	110	3.8 g	10.4 g
1 package	442 g	1737	60.6 g	164 g

Compared with other pork and bacon

Food	kcal / 100 g	Protein / 100 g	Per serving
Raw pork tenderloin	109	21 g	123 kcal · 4 oz
Roasted pork tenderloin	143	26.2 g	121 kcal · 3 oz
Broiled pork tenderloin	187	30.4 g	159 kcal · 3 oz
Raw ground pork	263	16.9 g	298 kcal · 4 oz
Cooked ground pork	297	25.7 g	252 kcal · 3 oz
Raw bacon	393	13.7 g	110 kcal · 1 slice raw
Baked bacon	548	35.7 g	44 kcal · 1 slice cooked
Microwaved bacon	476	39 g	43 kcal · 1 slice cooked

The pork and bacon rows exist in more than one state because water moves during cooking: this is the as-listed row. Weigh the food in the state you log and pick the row that matches — the calories don’t change in the pan, the grams do. The mechanics are in cooked vs raw weights.

Worth knowing

Raw bacon is about 40% fat by weight. A slice loses roughly two-thirds of its weight in the pan — mostly water and rendered fat — which is why the cooked rows are far denser per 100 g but a cooked slice is only about 40 kcal.

Questions about raw bacon

How many calories are in raw bacon?: Raw bacon: 393 kcal per 100 g. 1 slice raw (28 g) is 110 kcal with 3.8 g of protein. Source: USDA FoodData Central record 168277, "Pork, cured, bacon, unprepared".
How much protein is in raw bacon?: Raw bacon has 13.7 g of protein per 100 g and 3.8 g per 1 slice raw (28 g). That is 3.5 g of protein per 100 kcal — a modest protein contribution.
Should pork and bacon be weighed raw or cooked?: Weigh it in whichever state you log it, and use the row that matches — this page is the as-listed row. Cooking does not change how many calories are there, only how many grams they are spread across: meat loses water in the pan and gets denser, grains and pasta absorb it and get lighter per gram.

How calorie.one logs it

Type “raw bacon” into calorie.one and the app matches this exact record — “Pork, cured, bacon, unprepared” — estimates the grams, and shows the line with its USDA label. You correct the amount; the per-100 g figure is never guessed. That split between recognition and arithmetic is the whole methodology. For the numbers in context, read Calories in olive oil, butter and cooking fats.