How many shrimps for 4 people?

For four adults, plan on about 1 to 1.5 pounds of raw, peeled shrimp for a main course, which is 4 to 6 ounces per person. For an appetizer, published estimates for four people range from about 8 ounces to about 1.33 pounds. The number of shrimp that adds up to depends on the count printed on the bag. With 16/20 count shrimp, a main course for four works out to roughly 16 to 30 shrimp. With 21/25 count, it is roughly 21 to 38 shrimp.

This guide turns common per-person shrimp estimates into shopping amounts by guest count, by whether shrimp is the main dish or an appetizer, and by size. It is a quantity-planning aid, not a nutrition target. The figures come from published serving guides, and those guides don't fully agree. The differences are explained below so you can choose the estimate that fits your meal.

Shrimp for four people at a glance

Role and rule | Per person | Total for 4 | Approx. shrimp at 16/20 count | Approx. shrimp at 21/25 count

Main course, raw peeled | 4–6 oz (113–170 g) | 1–1.5 lb (454–680 g) | 16–30 | 21–38

Main course, half-pound rule | 8 oz (227 g) | 2 lb (907 g) | 32–40 | 42–50

Appetizer, raw peeled | 2–3 oz (57–85 g) | 8–12 oz (227–340 g) | 8–15 | 11–19

Appetizer, quarter-pound rule | 4 oz (113 g) | 1 lb (454 g) | 16–20 | 21–25

Appetizer, third-of-a-pound rule | about 5.3 oz (151 g) | about 1.33 lb (605 g) | 21–27 | 28–33

Gram figures are converted from ounces and pounds and rounded. Shrimp counts are calculated from the count-per-pound label and rounded to whole shrimp. The counts only hold if the label describes shrimp in the same form you are weighing.

Why the per-person estimates differ

Three kinds of guidance appear in the sources behind this article.

• Raw, peeled weight: allow 4–6 ounces per adult for a main dish, or 2–3 ounces for an appetizer. The appetizer figure is described as applying when shrimp is served with other food. The full condition was not available in the evidence for this article.
• Quarter-pound and half-pound rule: plan on a quarter-pound per person for an appetizer and a half-pound for a main course.
• Third-of-a-pound appetizer rule: about 1/3 pound per person for an appetizer, described as three to five large shrimp.

The raw, peeled guidance is the only one that clearly states the form of the shrimp. The quarter-pound, half-pound and third-of-a-pound rules don't say whether they mean peeled or shell-on weight. If those rules assume shell-on shrimp, the edible amount would be lower than the label weight. That partly explains why they come out higher than the peeled figures. For appetizers, a practical approach is to use the smaller peeled figure when shrimp is one of several dishes. Move toward the third-of-a-pound figure when shrimp is the main snack on offer.

The third-of-a-pound rule describes three to five "large" shrimp per person, but the available evidence doesn't say which count "large" refers to. Rely on the numeric count on the package rather than size names.

Turning pounds into a shrimp count

Shrimp are sold by count per pound. A 16/20 count means roughly 16 to 20 shrimp per pound in the form sold, and a 21/25 count means roughly 21 to 25 per pound. A lower count means fewer shrimp per pound, so each shrimp is bigger. To estimate how many shrimp you'll get, multiply the pounds you plan to buy by both ends of the count range.

pounds needed x low count  = fewest shrimp to expect
pounds needed x high count = most shrimp to expect

Example: main course for 4 at 1.5 lb, 21/25 count
1.5 x 21 = 31.5  ->  about 32 shrimp
1.5 x 25 = 37.5  ->  about 38 shrimp

If you'd rather plan by shrimp per plate, work backward. Choose a per-person count, multiply by four, then divide by the package count to get pounds. For a cocktail platter, larger shrimp give you fewer, more substantial pieces per guest at the same weight.

Peeled versus shell-on shrimp

The 4–6 ounce main-course and 2–3 ounce appetizer figures are raw, peeled weights. Because the count label applies to the form sold, a bag of shell-on 16/20 shrimp still contains about 16 to 20 shrimp per pound. However, the edible weight after peeling will be less than a pound. The evidence for this article doesn't include a peeled-yield percentage for shell-on shrimp, or a figure for weight lost during cooking. If you buy shell-on shrimp and use peeled-weight guidance, buy toward the upper end of the range or check the seller's own yield information.

Scaling up: 6, 10 and 20 guests

Each range below runs from the lowest to the highest published figure for that role. For appetizers, that is 2 ounces peeled up to 1/3 pound per person. For main courses, it is 4 ounces peeled up to a half-pound per person.

Guests | Appetizer total | Main-course total

4 | 0.5–1.33 lb (227–605 g) | 1–2 lb (454–907 g)

6 | 0.75–2 lb (340–907 g) | 1.5–3 lb (680–1,361 g)

10 | 1.25–3.33 lb (567–1,512 g) | 2.5–5 lb (1,134–2,268 g)

20 | 2.5–6.67 lb (1,134–3,024 g) | 5–10 lb (2,268–4,536 g)

Is 2 pounds enough for six people? It works out to about 5.3 ounces each. As an appetizer, that matches the most generous published estimate. As a main course, it falls within the 4–6 ounce range if the 2 pounds is peeled weight. It falls short of the half-pound rule, which would call for 3 pounds.

Gaps to check before you buy

• Whether the quarter-pound, half-pound and third-of-a-pound rules refer to peeled or shell-on weight was not stated in the available evidence.
• No shell-on to peeled yield, or raw to cooked weight change, was supplied for this guide.
• The count range that "large" shrimp refers to in the third-of-a-pound rule was not given.
• The full condition behind the 2–3 ounce appetizer figure was cut off in the available evidence.