How much protein is in a steak?
Most plain cooked steaks provide roughly 25 to 30 g of protein per 100 g. A cooked 6 oz steak usually lands near 43 to 51 g, depending on the cut, trimming and cooking loss. Use the cut and cooked weight for the closest estimate.
Key takeaways
- Cooked steak is usually 25 to 30 percent protein by weight.
- A 6 oz cooked steak commonly provides more than 40 g.
- Fat changes calories more than protein grams.
- Match cooked weight with cooked data.
For the broader context, see how much protein you need per day.
Steak is a concentrated protein food. The exact number moves with the cut, fat trimming and how much water is lost during cooking.
| Cooked portion | Protein at 25 g per 100 g | Protein at 30 g per 100 g |
|---|---|---|
| 3 oz (85 g) | 21 g | 26 g |
| 6 oz (170 g) | 43 g | 51 g |
| 8 oz (227 g) | 57 g | 68 g |
Cut matters most for calories
- Sirloin and tenderloin are generally leaner choices.
- Ribeye carries more visible and internal fat.
- Protein grams stay relatively close when cooked portions weigh the same.
- Sauces, butter and sides change the meal, not the steak’s protein.
USDA FoodData Central has separate entries for cut, grade, trimming and cooking method.1 For a close log, choose a cooked entry that resembles the steak on your plate. Do not apply a cooked value to raw weight.
Portion before precision
A restaurant “8 oz steak” may name the raw purchasing weight rather than the cooked weight on your plate. When precision matters, weigh the cooked edible portion. Otherwise, a range is more honest than a single exact gram.
USDA advises cooking whole beef steaks to 145°F (63°C) followed by a three-minute rest.2
Choose the number that matches your steak
“Steak” is not one database item. Cut, trimming and cooking change water and fat, so start with the description closest to the plate. If you weighed it after cooking, use a cooked entry. If a restaurant lists an 8 oz steak, remember that the menu may describe raw weight; the cooked serving can weigh less.
| Question | Best estimate |
|---|---|
| No scale, palm-size serving | Use the 3-4 oz cooked range |
| Cooked steak weighed at home | Multiply cooked grams by 0.25-0.30 |
| Bone-in steak | Weigh or estimate edible meat only |
| Steak with butter or sauce | Protein comes mainly from steak; log additions separately |
Example: 140 g cooked steak at 27 g protein per 100 g gives about 38 g protein: 140 × 0.27. The decimal is not more important than choosing the right cooked portion.
For meal planning, steak can cover a large share of a protein target at once. If a large portion is uncomfortable or leaves no room for other foods, serve less and use another protein opportunity later rather than treating the biggest steak as the best choice.
Compare steak with the rest of the meal
A large steak may exceed the protein needed for one eating occasion while leaving little room for fibre-rich foods. Splitting an 8 oz cooked steak into two meals can create two substantial protein anchors without changing the total food purchased.
Leftovers work well cold and thinly sliced in a sandwich or salad, or reheated gently in a sauce. Record the cooked portion used in the second meal rather than counting the original steak twice.
Do not confuse doneness with protein
Rare and well-done steaks do not gain or lose large amounts of total protein merely because of preference, but water loss changes weight and therefore protein per 100 g. Food safety is a separate question. Use official minimum-temperature guidance, especially for people at higher risk of foodborne illness, and remember that ground beef follows different safety guidance from an intact steak.
1: USDA FoodData Central provides cut-specific raw and cooked beef composition records. 2: USDA FSIS publishes the safe minimum temperature and rest time for whole cuts of beef.
More questions about Protein in food
How much protein is in 8 oz of steak?
Using 25 to 30 g per 100 g, an 8 oz cooked steak provides roughly 57 to 68 g.
Which steak has the most protein?
Lean cuts usually provide more protein per calorie, but similar cooked portions of common cuts have fairly close protein grams.
How much protein is in a 4 oz steak?
A 4 oz cooked portion commonly provides roughly 28 to 34 g, depending on cut and cooking.
Should I weigh steak raw or cooked?
Either can work if you match the weight to the corresponding raw or cooked database entry.
Does a fattier steak have less protein?
At the same weight it may have slightly less protein and more calories because fat occupies more of the portion.
