How Big Is A Porterhouse Steak? | Size & Cut Facts

Most porterhouse steaks weigh 24–40 oz and are 1.5–2 inches thick; USDA requires a tenderloin at least 1.25 inches wide.

How Large Is A Porterhouse Cut In Real Kitchens

The short loin yields a dramatic bone-in steak that pairs a New York strip on one side and a tenderloin on the other. In shops and steakhouses, you’ll usually see weights ranging from a pound and a half to two and a half pounds, with thickness between one and two inches. Bigger specimens exist, but the sweet spot sits near two inches where searing is simple and the center stays rosy.

Common Label	Typical Thickness	Usual Weight
Butcher’s Cut	~1.25 in	16–24 oz
Steakhouse Classic	~1.75–2 in	24–32 oz
Share Cut	2 in+	36–40+ oz

Portion size varies with the loin and how the bone is sawn, so two steaks with the same weight can look different on the plate. A thick bone and a broad filet side add grams without changing chew. For shopping help beyond this cut, scan our meat cuts buying guide.

What Makes It A Porterhouse, Not A T-Bone

The name is defined by the filet side. In the United States, the tenderloin portion must measure at least 1.25 inches across at its widest point. Anything narrower becomes a T-bone, and a sliver of filet yields a bone-in strip. That threshold comes from purchasing specifications widely used by restaurants and distributors, and it’s the most dependable way to tell the two steaks apart. You can review the primary document here: the USDA IMPS beef spec.

Length And Footprint On The Grill

Plan for roughly eight inches from tip to tail, give or take an inch depending on the carcass and the saw cut. The bone makes one side curve, so the footprint isn’t a perfect rectangle. On smaller backyard grills, place the bone near the cooler zone and rotate the meat side toward the heat for even browning.

How Thickness Changes The Cook

Cooking doesn’t change the cut’s classification, but it does change your timeline. A steak near 1.25 inches can go from fridge to sear to rest in under 15 minutes. At two inches, you’ll get better results with a reverse-sear or sear-roast approach so heat reaches the center without scorching the strip cap.

Best Doneness Targets

Medium-rare stays juicy on both sides of the bone; aim to pull at 125–130°F, then rest. The strip can handle a little more carryover than the filet, so slice from the filet first when sharing. An instant-read thermometer removes guesswork and protects that pricey cut.

Bone, Fat Cap, And Yield

The bone and exterior fat trim add weight you won’t eat. On a two-pound steak, expect edible yield near 70–75 percent after cooking and trimming. If you want maximum plate yield, ask for the surface fat to be neatly squared without losing the protective cap on the strip side.

How Large Should You Buy For A Crowd

For one hungry diner, a 24-ounce steak is plenty. For two, anything in the 28–40 ounce range works well when paired with sides. When budgets matter, two smaller steaks can beat one giant because more surface area means more crust and easier timing across multiple plates.

Weight Benchmarks You’ll See At Retail

Grocery cases often carry 20–28 ounce packs at about 1.25–1.5 inches thick. Butcher shops and steakhouses lean thicker, with 30–40 ounces at 1.75–2 inches. Specialty purveyors sometimes list 48-ounce showpieces that are meant to share.

Why The Tenderloin Width Rule Matters

That 1.25-inch rule keeps naming honest. It protects buyers from paying porterhouse prices for a T-bone with a tiny filet. It also explains weight spread: a steak pulled farther back on the loin will nearly always be heavier because the filet eye grows as you move away from the ribs.

How Butchers Measure That Width

Measurement is taken parallel to the back bone across the broadest part of the tenderloin. The purchasing spec spells out the process so wholesalers and restaurants speak the same language. If you’re buying in person, you can spot it fast: look for a full, round filet section, not a wedge.

Nutrition, Serving Size, And Price

Nutrition varies with trimming and grade. A broiled porterhouse cut that includes both muscles delivers abundant protein and fat. If you track macros, check the specific cut in a reliable database. MyFoodData’s entries draw from USDA datasets and reflect common retail trimming; here’s a direct entry for reference: MyFoodData porterhouse.

You’ll pay more per pound as grade and aging rise. Dry-aged short loins lose moisture during aging, which concentrates flavor and bumps price. Larger steaks also cost a little more per pound because they’re pulled from a select portion of the loin where the filet runs bigger.

Thickness, Time, And Temperature Guide

Use this chart to plan your cook. Times are estimates for a hot sear followed by an oven finish or a reverse-sear on a grill with a hot zone and a cooler zone. Always trust your thermometer over the clock.

Thickness	Approx Weight	Cook Time To 125–130°F
1.25 in	20–26 oz	8–14 min total
1.75 in	28–36 oz	16–25 min total
2.0 in	36–48 oz	25–40 min total

Heat Management Tips

Sear on cast iron or over the hottest part of the grill, then move to indirect heat to finish. Keep the bone toward the cooler side so the strip cap doesn’t overshoot while the filet catches up. Baste with butter on the stove, or simply rest after grilling to keep the crust crisp.

Buying Smart: Grade, Aging, And Thickness

Choose USDA Choice or Prime for marbling. Ask the counter for the cut thickness you want; specifying thickness gives you more consistent doneness than shopping by weight alone. For deep beef flavor, look for dry-aged short loin sections or request a steak cut from that portion.

Trimming Notes

Ask for squared edges, a tidy fat cap on the strip, and a clean, intact filet eye. Small surface silver can be left on; it helps bind the crust. If you’re stocking the freezer, vacuum-sealed packs hold up well. Label with weight and thickness so planning is easy later.

Cook Once, Serve Two Ways

One reason diners love this steak is flexibility at the table. Slice the strip across the grain for chew and sear flavor; carve the filet into medallions for tender bites. A single steak can please different preferences on one board.

Storage, Safety, And Leftovers

Keep raw steaks chilled and use within a few days, or freeze for longer storage. Thaw in the fridge, not on the counter. Reheat leftovers gently in a low oven, then flash in a hot pan to revive the crust without drying the inside.

Want doneness visuals after you pick your size? Try our grilling meat doneness levels.