How many calories are in prime rib?

351 calories per 100g, taken with the fat as it is carved. A 3 oz slice is 298 calories, an 8 oz restaurant cut is 797 and a 12 oz is 1,193, all before the jus, the horseradish cream and the Yorkshire pudding.

Why is prime rib so much higher than other beef?

28.1g of fat per 100g, more than three times what a trimmed sirloin steak carries at 8g of fat per 100g. Prime rib is roasted whole with its fat cap and its marbling intact, and both of them end up on the plate.

Is prime rib keto-friendly?

As keto as beef gets: 0g of carbohydrate per 100g and 28.1g of fat per 100g. An 8 oz cut is 797 calories, about 64g of fat and 52g of protein, which is a whole day's fat allowance for some people in one sitting.

How much saturated fat is in prime rib?

11.3g of saturated fat per 100g, so a 12 oz restaurant cut carries about 38g. That is roughly twice the ceiling most guidance sets for a whole day. Ribeye steak is 9.2g of saturated fat per 100g, and prime rib is the same muscle roasted with more of its fat left on.

Is prime rib the same as ribeye?

Same muscle, different cut and different cooking. Prime rib is the rib section roasted whole; a ribeye is a steak sliced from it and usually trimmed harder. That trimming is most of the gap: 351 calories per 100g here against ribeye steak at 285 calories per 100g.

Does prime mean USDA Prime grade?

Usually not. The word names the primal cut, the rib, rather than the grade, and most restaurant prime rib is USDA Choice. The 351 calories per 100g here is the all-grades figure for a whole roasted rib, which is what a typical serving comes from.

How much protein is in prime rib?

22.8g of protein per 100g, low for beef because fat displaces muscle: filet mignon is 29g of protein per 100g. A 12 oz prime rib does deliver about 78g of protein, but it costs 1,193 calories to get there.

How do you order prime rib on a calorie budget?

Take the smallest cut on the menu and trim the fat cap at the table. A 3 oz slice is 298 calories against 1,193 for a 12 oz. Cutting the cap off does real work, since 28.1g of fat per 100g is where the calories sit. Au jus is close to free; the creamed horseradish and the Yorkshire pudding are not.

All Foods

Calories in Prime Rib

USDA Verified · FDC 169500 · Sep 2026

298 calories

per 3 oz sliced (85g)

22.8g

Protein

Carbs

28.1g

Fat

Fiber

Per 100g cooked

Log Prime Rib in one photo

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