Poultry Anatomy & Cut Comparison

Chicken Breast vs Tenderloin: Nutrition Compared

Compare chicken breast vs chicken tenderloin by equal weight. See protein, calories, fat, sodium, cooking differences and what a true tenderloin actually is.

By Jennifer Zone, PhD · Published July 19, 2026 ·
4.9 (12 reviews) · Nutrition Score
PECTORALIS MINOR MUSCLE MATCHED RAW / COOKED BASIS PLAIN CUT VS BREADED TENDER

A true chicken tenderloin is not a breaded fast-food tender or a sliced strip of breast meat: it is the distinct Pectoralis minor muscle located on the inner side of the breast along the keel bone.

When comparing equal weights of plain, skinless raw or cooked meat, chicken breast and chicken tenderloin have virtually identical macronutrient and calorie profiles. The primary differences lie in portion size, cooking speed, and delicate fiber tenderness.

What Is a True Chicken Tenderloin? (Pectoralis Minor)

USDA Agricultural Marketing Service (AMS) specifically defines a chicken tenderloin as boneless, skinless white meat from the Pectoralis minor muscle. This muscle lies directly beneath the larger outer breast muscle (Pectoralis major) and runs along the breastbone (keel).

Anatomical Muscle Relationship

Main Chicken Breast (Pectoralis Major) Large outer muscle responsible for pulling wings downward. Weighs 150g to 250g+ per half.
Chicken Tenderloin (Pectoralis Minor) Smaller inner muscle responsible for raising wings. Naturally narrow and tender; weighs 40g to 60g each.

Tenderloin vs Breast Strip vs Prepared Chicken Tenders

Key Taxonomy Rules to Avoid Confusion
  • True Tenderloin: The specific anatomical Pectoralis minor inner muscle. Naturally boneless, skinless, and narrow.
  • Breast Strip: A regular piece of outer chicken breast sliced into a narrow strip format.
  • Prepared Chicken Tender: Breaded, battered, seasoned, or fried fast-food products containing substantial flour, breading oil, and sodium.

Side-by-Side Macro Snapshot (100g Raw Meat Baseline)

Chicken Breast

Pectoralis major

USDA Foundation Food FDC ID 2646170 (Raw, boneless, skinless)

Calories 120 kcal
Protein 22.5 g
Fat 2.6 g
Protein Density: 18.8 g / 100 kcal

Chicken Tenderloin

Pectoralis minor

USDA Verified Reference FDC ID 328612 (Raw, boneless, skinless)

Calories 107 kcal
Protein 23.2 g
Fat 1.2 g
Protein Density: 21.7 g / 100 kcal

Compare Your Serving Size

Select an equal weight and state to compare chicken breast vs chicken tenderloin side-by-side:

Chicken Breast (100 g)

Calories: 120 kcal
Protein: 22.5 g
Total Fat: 2.6 g
Sodium: 45 mg
Protein / 100 kcal: 18.8 g

Chicken Tenderloin (100 g)

Calories: 107 kcal
Protein: 23.2 g
Total Fat: 1.2 g
Sodium: 48 mg
Protein / 100 kcal: 21.7 g

Chicken Breast vs Tenderloin Nutrition per 100g

Nutrient profile comparing 100 grams of raw boneless skinless chicken breast with raw boneless skinless chicken tenderloin from matched USDA FoodData Central records:

Nutrient Chicken Breast (100g Raw) Chicken Tenderloin (100g Raw) Difference & Advantage
Calories 120 kcal 107 kcal Tenderloin is 13 kcal lower (Minimal difference)
Protein 22.5 g 23.2 g Virtually equal (+0.7 g difference, < 3%)
Total Fat 2.6 g 1.2 g Tenderloin is slightly leaner (-1.4 g fat)
Saturated Fat 0.6 g 0.3 g Both under 1.0 g saturated fat
Carbohydrates 0.0 g 0.0 g 0.0 g (Equal)
Cholesterol 73 mg 67 mg Essentially equal (73 mg vs 67 mg)
Sodium 45 mg 48 mg Essentially equal (45 mg vs 48 mg)
Potassium 334 mg 320 mg Breast has +14 mg more potassium
Phosphorus 213 mg 210 mg Essentially equal (213 mg vs 210 mg)
Selenium 24.5 mcg 23 mcg Essentially equal (24.5 mcg vs 23.0 mcg)
Niacin (B3) 10.9 mg 9.8 mg Breast has +1.1 mg more Niacin
Vitamin B6 0.81 mg 0.72 mg Essentially equal (0.81 mg vs 0.72 mg)
Iron 0.37 mg 0.35 mg Essentially equal (0.37 mg vs 0.35 mg)
Zinc 0.68 mg 0.65 mg Essentially equal (0.68 mg vs 0.65 mg)

Why Matched Cooking State Is Essential

The most common mistake on secondary nutrition websites is comparing a cooked chicken breast (~31g protein / 165 kcal per 100g) with a raw packaged chicken tenderloin label (~23g protein / 107 kcal per 100g).

This creates the false impression that chicken breast is vastly superior in protein density. In reality, cooking evaporates 20% to 30% of muscle water, which concentrates protein per 100 grams. When both cuts are compared in the same state (raw vs raw, or cooked vs cooked), their protein and calorie density are practically identical.

Protein and Calorie Comparison

In commercial retail packaging, a 4 oz (112 g) raw serving provides approximately 25 to 26 grams of complete protein in both chicken breast and chicken tenderloin, containing all nine essential amino acids. Both cuts deliver exceptional protein-to-calorie ratios of approximately 19 to 22 grams of protein per 100 calories.

Culinary Differences: Cooking Speed and Tenderness

While nutritionally identical, their physical and culinary properties differ significantly:

  • Cooking Time: Tenderloins are naturally slim (approx 1 to 1.5 inches thick) and cook in 6 to 8 minutes on a skillet, compared to 14 to 20 minutes for a thick whole breast half.
  • Tenderness: The Pectoralis minor muscle receives minimal physical exercise during the bird's life, resulting in finer muscle fibers and a softer, more delicate mouthfeel.
  • Tendon Tendon: True tenderloins contain a small white connective tendon running through the center, which cooks can easily remove before preparation if desired.

Safe Internal Cooking Temperature (165°F / 73.9°C)

Because tenderloins are thinner, home cooks often overcook them until dry or remove them too early based on surface browning.

USDA FSIS guidelines require that all chicken pieces reach a minimum internal temperature of 165°F (73.9°C). Insert a calibrated digital probe into the center of the largest tenderloin piece to ensure safety without overcooking.

Chicken Breast or Tenderloin: Which Should You Buy?

Choose Chicken Breast If:

  • You want large cutlets, stuffed chicken, or large-batch shredded meal prep.
  • You prefer custom thick slicing for stir-fries, bowls, or salads.
  • You want the most economical price per pound at the supermarket.
  • You want versatile portion sizes for family meals.

Choose Tenderloins If:

  • You need quick-cooking weeknight protein (cooks in under 8 minutes).
  • You prefer naturally tender, delicate white-meat texture.
  • You want convenient single-serving portions without cutting.
  • You are preparing finger foods, skewers, or air-fried tenders.

How We Source This Comparison

Anatomical definitions are sourced directly from the USDA Agricultural Marketing Service (AMS). Generic nutrition data are derived from official USDA FoodData Central Foundation Foods and verified commercial raw packaging standards (FDC ID 2646170 and FDC ID 328612).

Frequently Asked Questions

Is chicken tenderloin the same as chicken breast?

Not exactly. USDA AMS defines the tenderloin as the pectoralis minor muscle, a distinct, smaller boneless skinless white-meat muscle located underneath the main breast along the keel bone.

Is a chicken tender the same as a tenderloin?

Not always. In casual terminology, 'chicken tender' can refer to a true raw tenderloin, a sliced breast strip, or a breaded and fried prepared product. Always check the ingredients and preparation.

Is a chicken breast strip a tenderloin?

No. A chicken breast strip is simply a piece of regular outer breast meat sliced into a narrow strip, whereas a true tenderloin is the anatomically distinct Pectoralis minor muscle.

Which has more protein, chicken breast or tenderloin?

They are virtually identical when compared at equal raw or cooked weights. Raw chicken breast contains approximately 22.5 g protein per 100 g, while raw tenderloin provides about 23.2 g per 100 g (approx 26 g per 4 oz).

Which has fewer calories?

Both are extremely low in calories when plain and skinless. In raw state, chicken breast has about 120 kcal per 100 g compared to 107 kcal for raw tenderloin. Never compare raw tenderloin with cooked breast numbers.

Is tenderloin lower in fat?

Both are ultra-lean white meats containing roughly 1 to 2.5 grams of total fat per 100 grams. Some commercial tenderloin packages list 0 g fat due to standard label rounding regulations.

Why do chicken tenderloin nutrition values differ online?

Online discrepancies occur because websites mix raw and cooked states, confuse plain tenderloins with breaded chicken tenders, or compare products with varying amounts of retained water and brining solutions.

Are fried chicken tenders nutritionally the same as tenderloins?

No. Fast-food breaded and fried chicken tenders contain substantial calories (approx 500 kcal per serving), added fat (25 g+), carbohydrates (30 g+), and sodium (1,400 mg+), making them a completely different food category.

Which cooks faster?

Tenderloins cook significantly faster than whole chicken breasts because they are thinner and smaller, requiring less thermal penetration time to reach safe internal temperatures.

What temperature should chicken tenderloin reach?

According to USDA FSIS food safety regulations, chicken tenderloins must reach a minimum internal temperature of 165°F (73.9°C) measured with a food thermometer.

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