Meat Portion Calculator

About the Meat Portion Calculator

Buying meat for a meal or a party is one of those jobs where guessing costs money either way. Buy too little and the table runs out before the last guest is served; buy too much and an expensive joint ends up in the freezer or the bin. The difficulty is that a kilogram of meat does not mean the same amount of food from one cut to the next. A boneless steak is almost all meat, while a whole chicken or a rack of ribs is mostly bone, skin and fat, and every cut loses water in the pan.

This meat portion calculator works out how much raw meat to buy for any number of people, for boneless cuts, bone-in cuts, whole birds, ribs, mince and fish fillets. It adjusts for light, normal or hearty appetites and shows the total in grams and pounds, the amount per person, and roughly how much cooked meat you will have to serve.

How to Use the Meat Portion Calculator

Enter the number of people. Count adults; children usually eat about half an adult portion, so two children count as one adult.

Choose the meat: boneless, bone-in, whole bird, ribs, mince or fish.

Choose the appetite. Light suits a buffet or a meal with plenty of side dishes; hearty suits a barbecue where the meat is the main event.

How Meat Portions Are Worked Out

  per person   =  allowance for the cut × appetite factor
  raw meat     =  people × per person
  cooked meat  ≈  raw meat × edible share for the cut

The appetite factor is 0.75 for light, 1 for normal and 1.25 for hearty.

Step-by-Step Example

Eight people, boneless meat, normal appetites.

  Per person:  170 g × 1              =  170 g  (6 oz)
  Raw meat:    8 × 170 g              =  1,360 g  (3 lb)
  Cooked:      1,360 g × 75%          =  about 1,020 g  (128 g each)

The same eight people with bone-in chops.

  Raw meat:    8 × 280 g              =  2,240 g  (about 4.9 lb)

Allowances per Person

These are generous family-meal figures for an adult main course. Restaurant portions are often larger, and many nutrition guides suggest smaller servings, around 85 to 115 grams of cooked meat.

Why Meat Shrinks

Raw meat is roughly three quarters water. As it heats, the muscle proteins tighten and squeeze water out, and fat melts into the pan. A steak cooked medium loses around a quarter of its weight; a joint roasted well done or a brisket cooked low and slow for many hours can lose a third or more. Fish, with less connective tissue and shorter cooking times, loses a little less. This is why the calculator shows the cooked weight separately: it is the amount that actually reaches the plate.

Choosing Between Cuts

Bone-in cuts look expensive per portion, but they are often cheaper per kilogram and the bone adds flavour and keeps the meat moist. Whole birds are usually the best value of all, and the carcass makes stock. Boneless cuts cost more per kilogram but waste nothing, which makes them easy to portion precisely. Mince stretches furthest, because it is usually combined with sauce, beans or vegetables in dishes such as chilli, bolognese or burgers.

Planning for Parties and Barbecues

At a buffet with several mains and many salads, people take smaller portions of each dish, so the light setting is usually right. At a barbecue, where burgers, sausages and chicken are the whole meal, guests eat more, and the hearty setting is safer. If you are serving two meats, split the total between them rather than buying a full portion of each — most people take some of both. It is also worth adding 10 to 20 percent when leftovers are welcome, such as for a Sunday roast that will become Monday's sandwiches.

Buying and Storing Meat

Buy meat as close to the day as you can, or freeze it on the day you buy it. Keep raw meat at the bottom of the fridge, below cooked food, so juices cannot drip onto anything else. Large joints and whole birds take a long time to thaw — often a day or more in the fridge — so plan the defrosting along with the shopping. Cooked leftovers should be cooled quickly, refrigerated within two hours, and eaten within three or four days.

Portions for Children and Teenagers

Young children usually eat about half an adult portion, while teenagers, especially active ones, can eat as much as an adult or more. When a group is mixed, count each young child as half a person and each teenager as a full one. The calculator accepts decimals, so ten adults and three young children can be entered as 11.5 people.

Understanding Your Result

Raw meat to buy is the total weight for the group.

In pounds gives the same amount in pounds and the portion in ounces.

Per person shows the raw allowance used for each adult.

Cooked to serve estimates the cooked meat you will actually have.

Shopping rounds the amount up to a convenient weight to ask for.

Worth knowing covers children and leftovers.

When Should You Use This Calculator?

Planning a dinner party or family gathering.

Shopping for a barbecue with several kinds of meat.

Ordering from a butcher, who will ask for a weight.

Cooking for the week and portioning meals.

Budgeting for a large event.

Common Mistakes

Treating bone-in weight as all meat.

Forgetting that meat shrinks when cooked.

Buying a full portion of every meat when serving several.

Ignoring the side dishes, which change how much people eat.

Leaving no time to thaw a large joint or bird.