How much protein is in roasted pork tenderloin?

Roasted pork tenderloin has 26.2 g of protein per 100 g and 22.2 g per 3 oz (85 g). That is 18.3 g of protein per 100 kcal — a high-protein food by any standard.

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 cooked 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 168250

Calories in roasted pork tenderloin

USDA FoodData Central record for “Pork, fresh, loin, tenderloin, separable lean only, cooked, roasted” — per 100 g, per every USDA serving size, and next to the other pork and bacon rows.

The short answer

Roasted pork tenderloin: 143 kcal per 100 g. 3 oz (85 g) is 121 kcal with 22.2 g of protein. Source: USDA FoodData Central record 168250, "Pork, fresh, loin, tenderloin, separable lean only, cooked, roasted".

Per 100 g

Nutrient	Per 100 g	Share of energy
Energy	143 kcal	100%
Protein	26.2 g	73%
Fat	3.5 g	22%
Carbohydrate	0 g	0%

Roasted pork tenderloin is 143 kcal per 100 g in USDA FoodData Central (SR Legacy). Of that energy, about 73% comes from protein, 22% from fat and 0% from carbohydrate. That works out to 18.3 g of protein per 100 kcal — a high-protein food by any standard.

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	143	26.2 g	3.5 g
3 oz	85 g	121	22.2 g	3 g
1 roast	402 g	575	105.3 g	14.1 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 cooked 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.

Questions about roasted pork tenderloin

How many calories are in roasted pork tenderloin?: Roasted pork tenderloin: 143 kcal per 100 g. 3 oz (85 g) is 121 kcal with 22.2 g of protein. Source: USDA FoodData Central record 168250, "Pork, fresh, loin, tenderloin, separable lean only, cooked, roasted".
How much protein is in roasted pork tenderloin?: Roasted pork tenderloin has 26.2 g of protein per 100 g and 22.2 g per 3 oz (85 g). That is 18.3 g of protein per 100 kcal — a high-protein food by any standard.
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 cooked 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 “roasted pork tenderloin” into calorie.one and the app matches this exact record — “Pork, fresh, loin, tenderloin, separable lean only, cooked, roasted” — 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.