Pork tenderloin is one of the leanest cuts of meat you can buy. A 3-ounce cooked serving contains just 3 grams of total fat and 1 gram of saturated fat, which easily clears the USDA’s threshold for “lean” labeling. In fact, its fat content is comparable to a skinless chicken breast, making it one of the lowest-fat options in the entire meat case.
How It Meets the USDA “Lean” Standard
For a cut of meat to carry the “lean” label, the USDA requires it to contain less than 10 grams of total fat, 4.5 grams or less of saturated fat, and fewer than 95 milligrams of cholesterol per serving. The “extra lean” standard is stricter: less than 5 grams of total fat, under 2 grams of saturated fat, and the same cholesterol limit.
Pork tenderloin doesn’t just qualify as lean. With 3 grams of total fat and 1 gram of saturated fat per 3-ounce serving, it qualifies as extra lean. It also delivers 22 grams of protein in that same serving for roughly 120 calories, giving it one of the best protein-to-fat ratios of any whole cut of meat.
How It Compares to Chicken Breast
The comparison most people want to know about is chicken breast, the default “healthy protein.” On an ounce-for-ounce basis, the two are remarkably close. A 3-ounce serving of roasted pork tenderloin has about 122 calories and 3 grams of fat. The same weight of roasted skinless chicken breast lands in a similar range. The gap is small enough that choosing between them comes down to flavor preference rather than any meaningful nutritional advantage.
How It Compares to Other Pork Cuts
Not all pork is this lean, and the differences between cuts are significant. Within the loin section alone, fat content can more than double depending on which cut you choose:
- Pork tenderloin: 120 calories, 3g fat, 1g saturated fat per 3 oz
- Boneless top loin chop: 173 calories, 5.2g fat, 1.8g saturated fat
- Center loin chop: 153 calories, 6.2g fat, 1.8g saturated fat
- Rib chop: 158 calories, 7.1g fat, 2.2g saturated fat
- Sirloin roast: 173 calories, 8g fat, 2.4g saturated fat
All of these still fall under the USDA “lean” threshold, but pork tenderloin stands apart as the leanest of the group by a wide margin. If you see “pork loin” at the store, check the label carefully. The tenderloin is a separate, smaller muscle that runs along the backbone. It’s narrow and tapered, usually about a foot long and weighing around a pound. The larger pork loin roast is a different cut with roughly twice the fat.
Vitamins and Minerals
Beyond protein, pork tenderloin is unusually rich in a few nutrients that can be hard to get elsewhere. A 3.5-ounce serving of cooked pork loin provides about 89% of your daily selenium needs and nearly half your daily thiamin (vitamin B1), a nutrient essential for converting food into energy. The same serving covers roughly 20% of your daily zinc and vitamin B6, plus 10% of your iron. Few other lean proteins pack that much micronutrient density into so few calories.
Heart Health Certification
Pork tenderloin is one of a small number of fresh meat products that carry the American Heart Association’s Heart-Check certification. Multiple brands have earned this mark, all listing 130 calories and 4 grams of total fat per 4-ounce raw serving. That certification means the product meets the AHA’s criteria for saturated fat, sodium, and cholesterol as part of a heart-healthy eating pattern.
Keeping It Lean When You Cook It
Because pork tenderloin is so low in fat, it can dry out quickly if overcooked. The current safe internal temperature for pork steaks, roasts, and chops is 145°F, followed by a 3-minute rest. That target was lowered from 160°F years ago, and many people still overcook pork out of habit. Using a meat thermometer and pulling the tenderloin at 145°F gives you a slightly pink center that’s both safe and noticeably more tender and juicy than well-done pork.
Your cooking method also matters. Roasting, grilling, or pan-searing with a small amount of oil preserves the cut’s lean profile. Wrapping it in bacon or smothering it in cream sauce obviously changes the math. A simple rub or marinade keeps the calorie count close to that baseline 120 per serving while adding flavor that compensates for the low fat content.