Cooked lean beef delivers about 25–31 g protein per 100 g, with complete amino acids and highly bioavailable iron and B12.
Here’s a clear, practical guide to beef protein nutrition that helps you plan portions, compare cuts, and hit daily protein targets without guesswork. All figures below refer to cooked beef unless stated.
Beef Protein Per 100g And Per Ounce (Cooked)
Protein varies by cut, trimming, and cooking loss. These typical ranges reflect data drawn from the USDA’s FoodData Central and retail beef cut analyses. Numbers may shift with doneness, moisture loss, and fat trim.
| Beef Cut (Cooked, Lean As Eaten) | Protein Per 100 g | Notes |
|---|---|---|
| Top Sirloin Steak | ~30–31 g | Lean, firm texture; strong protein density. |
| Top Round Roast/Steak | ~28–30 g | Very lean; great for slicing thin. |
| Tenderloin (Filet) | ~26–28 g | Soft bite; slightly lower protein per 100 g. |
| Ribeye (Trimmed) | ~26–28 g | Marbling lowers protein density per 100 g. |
| Brisket (Braised, Lean) | ~27–29 g | Moist cooking; trim exterior fat after cooking. |
| Ground Beef 90% Lean | ~25–27 g | Good protein with moderate fat. |
| Ground Beef 80% Lean | ~23–25 g | Higher fat lowers protein per 100 g. |
| Flank/Skirt (Trimmed) | ~27–30 g | Thin cuts; quick cook to keep moisture. |
Beef Protein Nutrition For Real-World Eating
This section puts beef protein nutrition into daily meals. Use cooked weights, since water loss concentrates protein per gram. That’s why a lean steak often reads above 28 g per 100 g after cooking even if the same cut looks lower when raw.
Portion Math You Can Use Tonight
- 3 oz cooked (about 85 g): ~22–26 g protein, depending on the cut.
- 4 oz cooked (about 115 g): ~28–32 g protein is common for lean cuts.
- 6 oz cooked (about 170 g): ~40–50 g protein for lean steaks and roasts.
- 100 g cooked: use the table above for a quick check across cuts.
If you meal-prep burgers, patties lose water in the pan. A “quarter-pound” patty on the label is raw weight; expect the cooked patty to weigh less and carry the protein you see listed for cooked 100 g portions.
Why Cooking Changes The Numbers
Heat pulls water from muscle. Less water per piece means more protein per 100 g on the plate. Trimming visible fat lifts protein density too. The USDA’s retail beef cut work also reports values by raw vs. cooked states and shows how preparation shifts results.
Quality: Complete Amino Acids And High Digestibility
Beef supplies all nine indispensable amino acids in strong amounts, with high digestibility. Under modern scoring, DIAAS is used to rate protein quality by amino acid digestibility at the ileum. Animal proteins like beef typically score at or near the top, which means a serving supplies amino acids in ratios your body can use with little shortfall. See the FAO’s technical report on DIAAS for the scoring method and interpretation (FAO protein quality evaluation).
What That Means For Meals
Pairs like rice and beans already make strong patterns; adding a modest beef portion can round out lysine-rich and leucine-rich servings that help you hit total protein with fewer moving parts. If you track grams across the day, count beef as “complete” and let plants fill fiber and carb targets.
Daily Protein Targets: How Much To Aim For
The baseline Recommended Dietary Allowance for healthy adults is 0.8 g per kg body weight per day. That’s a floor set to cover basic needs for most people, not a training target. Reviews summarize higher ranges for active adults and older adults who want to keep muscle mass. See the peer-reviewed summaries on intake ranges here: RDA 0.8 g/kg and intake ranges by context.
- General baseline: ~0.8 g/kg/day.
- Active or strength goals: ~1.2–2.0 g/kg/day, split across meals.
- Older adults: many aim above the baseline to protect lean mass, often ~1.0–1.2 g/kg/day, per clinician advice.
Spread protein over the day. A steady 25–40 g per meal helps muscle protein synthesis more than one giant dinner does.
Beef’s Nutrient Extras: Iron, B12, Zinc, And More
Beyond protein, beef brings heme iron and vitamin B12 in amounts that support red blood cell formation and energy metabolism. Zinc, selenium, niacin, and phosphorus also show up in useful amounts. Recent analyses of prime cuts report protein plus B12 and mineral density across steaks and roasts, even when fat levels differ by cut.
Lean Doesn’t Mean Dry
Moisture is the key. Sear fast, then finish at gentle heat. Rest before slicing to keep juices in the meat instead of on the board. Thin slicing across the grain makes even round cuts feel tender while preserving the solid protein per bite that lean beef delivers.
Choosing Cuts For Your Goal
High Protein Per Gram (Lean Picks)
Top sirloin, eye of round, top round, and bottom round put a lot of protein into each cooked gram. Tenderloin runs lean too, though you pay for that texture. Flank and skirt give hearty beef flavor; trim the surface and slice thin after a short rest.
Balanced Plate, Flavor First
If flavor comes first, a trimmed ribeye lands near the mid-20s for protein per 100 g cooked, which is still strong. Pair with a fiber-rich side and you still hit a solid protein count without pushing portion size.
Ground Beef For Convenience
Lean-to-fat ratio sets protein density. A 90/10 grind usually sits near 25–27 g per 100 g cooked; 80/20 trends lower per 100 g because more fat displaces protein. Draining after cooking can cut some fat while keeping protein steady.
Beef Vs Other Protein Foods (Cooked)
Here’s a quick comparison of cooked protein density by weight. Values are typical ranges from the same USDA sources and large reviews. Use these for menu swaps and batch-cook planning.
| Food (Cooked) | Protein Per 100 g | Notes |
|---|---|---|
| Beef, Lean Steak | ~28–31 g | Complete amino acids, heme iron, B12. |
| Chicken Breast | ~30–32 g | Very lean; similar protein density. |
| Pork Loin | ~27–30 g | Lean center cuts compare well. |
| Salmon | ~22–25 g | Omega-3 fats with solid protein. |
| Eggs | ~13 g | Per 100 g cooked egg; high quality. |
| Lentils | ~8–9 g | Great fiber; pair to raise total protein. |
| Firm Tofu | ~12–14 g | Varies by water content. |
Smart Cooking To Keep Protein On The Plate
Sear, Then Finish Gently
High heat for color, then moderate heat to target doneness. This limits purge and keeps protein per serving steady.
Slice Across The Grain
Shorter muscle fibers chew better, so you can keep portions reasonable and still feel satisfied.
Weigh Cooked Portions When You Track Intake
Labels list raw weights. For tracking, weigh the cooked portion on your plate to match the cooked-weight tables in this guide.
Label Clues: What % Lean Tells You
Ground beef lists % lean. A 95/5 grind has less fat per 100 g cooked and usually higher protein density than 80/20. If you want a burger that clears 25 g protein in a smaller patty, pick a leaner grind or press a slightly thicker patty and avoid overcooking.
How Beef Fits A Day’s Intake
Build meals around your target. Someone at 70 kg with a 1.2 g/kg goal aims for ~84 g protein. That might look like 30 g at lunch from steak, 30 g at dinner from a stew, and the rest from eggs, dairy, or pulses. The RDA and intake-range links above give full context for setting your number and why distribution across meals helps.
Digestibility And Scoring: A Quick Primer
Protein quality scores compare amino acid patterns and digestibility. DIAAS doesn’t truncate values above 100, which makes it useful for single-source foods like beef. Current reviews support DIAAS as the practical choice for rating single foods and blends. See DIAAS background and methods for a plain-English walkthrough of how the score works and why certain foods rate near the top.
Safety And Storage Notes
- Refrigerate cooked beef within 2 hours; use within 3–4 days or freeze.
- Thaw in the fridge, not the counter. Reheat to steaming hot.
- Trim visible surface fat if you want to raise protein per 100 g cooked.
Quick FAQ-Style Clarity Without The FAQ Block
Is Raw Beef Higher In Protein Than Cooked?
Per gram on your plate, cooked often reads higher because water left during cooking concentrates protein. Per piece, total protein stays about the same; moisture shifts the per-100-g math.
Do Marinades Change Protein?
Acid or salt in a marinade changes flavor and texture more than protein content. The main swing in numbers still comes from water loss and fat content.
What About Jerky?
Jerky is dried, so water removal pushes protein per 100 g far above fresh beef. For tracking, read the package per serving since weights are tiny but dense.
Sources You Can Trust For Numbers
For precise, cut-specific entries, search the USDA’s FoodData Central Food Search. For protein quality terms and methods, see the FAO DIAAS report and a recent review on DIAAS methods (current overview). For intake targets, review the RDA summary (0.8 g/kg baseline) and a practical roundup of ranges by goal (context by life stage and activity).