One cooked ounce of beef typically delivers ~7–8.5 grams of protein, depending on cut, fat level, and cooking loss.
Beef protein per oz matters when you’re planning meals, tracking macros, or balancing cost with nutrition. A single ounce sounds small, yet those ounces add up across a steak, roast, or a pan of ground beef. This guide breaks down real-world ranges by cut and fat level, shows what changes protein density, and gives you quick portion math you can use at the stove or scale.
Beef Protein Per Oz: Cut-By-Cut Reality
Most cooked lean steak cuts fall between 7 and 8.5 grams of protein per ounce. Ground beef varies with leanness, and fattier styles land on the lower end per ounce because more of each bite comes from fat. The numbers below are typical cooked values; expect small swings from moisture loss and trimming.
| Beef Type (Cooked) | Protein Per Ounce (g) | Notes |
|---|---|---|
| Top Sirloin Steak | ~8.4 | Very lean; high protein density per bite. |
| Tenderloin / Filet | ~7.2–7.8 | Lean cut; range reflects doneness and trim. |
| Ribeye Steak | ~7.0–7.6 | More marbling; protein per ounce trends lower than sirloin. |
| Top Round / Eye Of Round | ~7.8–8.3 | Very lean roast/steak; strong protein per ounce. |
| Flank / Skirt | ~7.4–8.1 | Lean with visible grain; slice thin across the grain. |
| Brisket (Lean Slices) | ~6.9–7.6 | Rendered fat and moisture loss can shift the range. |
| Ground Beef 95/5 | ~7.4–7.8 | Very lean grind; strong protein density. |
| Ground Beef 90/10 | ~7.0–7.5 | Popular lean choice for chili, tacos, skillets. |
| Ground Beef 85/15 | ~6.9–7.3 | Balanced flavor; slightly less protein per ounce. |
| Ground Beef 80/20 | ~6.6–7.0 | Juicy burgers; fattier blend lowers protein density. |
What Actually Changes Protein Per Ounce
Cut And Fat Level
Protein lives in the lean. Cuts with less fat and more lean muscle pack more grams per ounce. That’s why top sirloin, round, and tenderloin tend to beat ribeye or short ribs for protein density. Ground beef follows the same rule: the higher the lean percentage, the more protein you get per ounce cooked.
Moisture Loss And Doneness
Cooking drives off water. The longer and hotter the cook, the more moisture you lose, which can concentrate protein per ounce in the lean. At the same time, fatty cuts may render more fat, shifting weight away from protein. Net result: realistic ranges, not one fixed number, even for the same cut.
Raw-To-Cooked Yield
Portions shrink. A useful retail benchmark is that about 4 oz raw beef yields roughly 3 oz cooked lean (a typical “deck-of-cards” portion). Plan your raw weights with that yield in mind when you’re targeting a specific protein total for the plate.
Trim, Bone, And Surface Area
Protein math is based on edible lean. Heavy trim, extra fat caps, and bone weight change the ratio you eat. Thin cuts with more surface area may lose more moisture than thick cuts cooked to the same doneness.
Use Beef Protein Per Oz In Real Meal Math
Here’s the quick way to plan: assume 7–8 grams per cooked ounce for steak and roasts, and 6.8–7.6 grams per cooked ounce for ground beef, then adjust a notch up for the leanest cuts and a notch down for the fattiest blends. That rule of thumb is widely taught in clinical nutrition handouts and lines up with lab-sourced nutrient databases.
How Many Ounces Hit Common Protein Targets?
- 20 grams: about 2.5–3 oz cooked lean steak, or 3–3.5 oz of 80/20 cooked ground beef.
- 30 grams: about 4–4.5 oz cooked lean steak, or 4.5–5 oz of 80/20 cooked ground beef.
- 40 grams: about 5–5.5 oz cooked lean steak, or 6–6.5 oz of 80/20 cooked ground beef.
Beef Protein Per Oz For Ground Beef Buyers
Ground beef labels show lean-to-fat ratio. A 95/5 pack will deliver more protein per ounce than 85/15 or 80/20, with taste and price trade-offs. In a skillet, some fat renders out; drain or blot if you want the cooked blend to trend closer to the lean end of the protein range.
Lean Picks That Stretch Your Protein Budget
Top sirloin, eye of round, top round, tri-tip, and tenderloin give you strong protein per ounce with less waste from excess fat. If you’re slicing for meal prep, those cuts keep portions tidy and repeatable across containers.
Close Variation: Beef Protein Per Ounce—Simple Portion Math
This section keeps the arithmetic simple. Keep the following “grab-and-go” conversions handy and your macro tracking gets a lot easier across burgers, tacos, and steaks.
| Serving Shortcut | Protein (g) | Use It For |
|---|---|---|
| 1 oz cooked lean steak | ~8 | Slice counts on sirloin or round. |
| 1 oz cooked ground beef, 90/10 | ~7.2–7.5 | Taco meat, chili, skillets. |
| 1 oz cooked ground beef, 80/20 | ~6.6–7.0 | Burgers and meatballs. |
| 3 oz cooked lean steak | ~24 | Classic deck-of-cards portion. |
| 4 oz cooked lean steak | ~31–34 | Hearty plate or high-protein bowl. |
| 4 oz raw steak → ~3 oz cooked | ~23–25 | Yield guide when buying. |
| 8 oz cooked lean steak | ~62–68 | Shareable steak or macro split across meals. |
How To Get Reliable Numbers At Home
Pick A Source And Be Consistent
Use a single, lab-based database for your baseline, then stick with it so your logs compare cleanly week to week. Many entries pull from the same underlying lab data; you’ll see minor variation from brand-level moisture and fat.
Weigh Cooked, Not Raw, For Macro Tracking
Cook first, then weigh. Cooked weight bakes in moisture loss. If you only have raw weights, plan on the common 4 oz raw to 3 oz cooked yield so your per-ounce protein estimate lines up with what you actually eat.
Slice And Batch For Precision
Cook a full steak or batch of ground beef, let it rest, then portion with a scale. Label containers with cooked ounces and the per-ounce protein you use. Over time, you’ll build a reliable playbook for your favorite cuts.
Health And Menu Notes (Practical, Not Prescriptive)
Beef brings complete protein plus iron, zinc, and B vitamins. If you like a higher protein-to-calorie ratio, reach for leaner cuts and keep portions trimmed. If you prefer richer cuts for flavor, plan around a slightly lower protein per ounce and hit your daily target across the rest of the day with poultry, fish, eggs, dairy, or legumes.
Tie It Back To The Keyword In Plain Language
You came here for beef protein per oz. In short, plan on ~8 grams for lean steaks and ~7 grams for typical ground beef, then nudge up or down by fat level and doneness. That keeps recipes flexible without blowing your macro plan.
Quick Buyer’s Guide For Protein-Dense Beef
Best Everyday Picks
- Top sirloin / sirloin tip: reliable 7.8–8.4 g per ounce; easy to trim and slice.
- Top round / eye of round: very lean; marinate and slice thin across the grain.
- 90/10 or 93/7 ground beef: strong protein per ounce with good flavor retention.
Cook Moves That Help
- Keep a gentle finish: pull steaks a few degrees shy and rest to limit moisture loss.
- Drain ground beef: pour off rendered fat to raise protein density per ounce.
- Slice after resting: keeps juices in the meat and portions weigh more per slice.
Beef Protein Per Oz—Why Your App Shows Slightly Different Totals
Apps pull from multiple entries. Some list brand data; some list generic lab composites. Water and fat shift during cooking, so your skillet result may not match a packaged burger patty entry. That’s normal. Use one trusted baseline, weigh cooked portions, and stay consistent in your method. Over time, your personal averages will match your kitchen.
Source Backstops You Can Trust
Clinical handouts often teach the handy “about 7 grams per cooked ounce of beef” rule. Lab-compiled databases show why lean steaks can run closer to 8 g per ounce and fattier grinds closer to 7 g per ounce. If you need a pinned reference, check a reputable nutrient database and a medical nutrition handout so your logs stay steady across recipes and weeks.
See the USDA FoodData Central for lab-based entries on specific cuts and grinds, and the Johns Hopkins quick chart that teaches about 7 grams of protein per cooked ounce of beef. Both pair well with your kitchen scale for consistent tracking.