How much protein is in a 12 oz ribeye steak?

A 12 oz raw marbled American ribeye steak provides approximately 71.4g of pure complete protein, 6.0g of leucine, and 1.7g of natural creatine.

Which steak has the most protein per ounce?

Filet Mignon (tenderloin) and Top Sirloin have the highest protein density at ~6.65g–6.75g protein per raw ounce (and ~8.9g–9.0g per cooked ounce) due to minimal intramuscular fat.

Does steak doneness affect protein absorption?

Cooking to medium-rare (130°F) denatures myosin into an easily digestible gel without heavily contracting actin, optimizing enzymatic cleavage in the digestive tract.

How much creatine survives steak cooking?

Cooking degrades approximately 10% to 15% of natural creatine monohydrate into creatinine under gentle medium-rare cooking, preserving 85%+ intact. Overcooking to well-done degrades up to 30% of natural creatine.

What is the difference in protein between an 8 oz NY strip and an 8 oz ribeye?

An 8 oz raw NY Strip yields ~51.6g protein and 24g fat (~420 kcal), whereas an 8 oz raw Ribeye yields ~47.6g protein and 38.4g fat (~536 kcal), reflecting ribeye's richer marbling.

Does resting a steak prevent protein loss?

Yes. Slicing immediately expels myoglobin-rich cell sap containing dissolved free amino acids, taurine, and creatine. Resting for 8 minutes allows the actomyosin gel to resorb intracellular water.

Universal Steak Protein & Amino Acid Calculator

Select your specific steak cut, raw portion weight, thickness, and doneness level to calculate total bioavailable protein grams, leucine content, natural creatine, and cooked plate yield.

Pro Tip for Universal Steak Protein & Amino Acid Calculator: Always measure with an instant-read thermometer probe and rest pasture-raised meats on an elevated wire rack for optimal juiciness and flavor retention.

Variables & Parameters

Steak Cut Selection

Raw Steak Weight (oz) 12 oz raw

Cooking Doneness

Calculated Targets

Primary Target

Optimal Target

Net Protein Grams

Cooked Plated Oz

Leucine Yield

Creatine Content

Total Meal Kcal

Steak Cut	Raw Pro / oz	Cooked Pro / oz	12 oz Raw Protein	Fat / 12 oz Raw	Total Calories
pasture-raised Top Sirloin	6.65 g	8.9 g	80 g	18 g	482 kcal
Filet Mignon (Tenderloin)	6.75 g	8.6 g	81 g	16 g	468 kcal
pasture-raised New York Strip	6.45 g	8.3 g	77 g	36 g	632 kcal
marbled American ribeye Steak	5.95 g	7.7 g	71 g	58 g	806 kcal
pasture-raised Flank Steak	6.60 g	8.8 g	79 g	20 g	496 kcal

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