How much food per person should I plan for a party?

Common catering rules for a main meal: ½ lb (8 oz) raw boneless meat, poultry or fish per adult (about 6 oz cooked), ¾ lb if bone-in, 1¼ lb raw whole turkey, ¼ cup dry rice or 2 oz dry pasta as a side (3 oz as a main), ½ lb potatoes, ¼ lb vegetables, 1 oz salad greens and 1–2 rolls. Plan about 20% more for hearty eaters or an all-evening event and 20% less for a light lunch or when there are many appetizers.

What is a healthy portion size?

Using the plate method on a 9-inch plate: half vegetables and fruit, a quarter lean protein (about 3–4 oz cooked, the size of your palm), a quarter grains or starch (½–1 cup cooked, a cupped hand to a fist), plus a cup of milk or yogurt. At 2,000 calories a day the USDA pattern gives 2½ cups of vegetables, 2 cups of fruit, 6 oz-equivalents of grains, 5½ oz-equivalents of protein foods and 3 cups of dairy.

What is the hand portion guide?

Your hand scales with your body, so it is a handy measure: a fist ≈ 1 cup (vegetables, fruit, cereal, cooked rice or pasta), a palm ≈ 3 oz of cooked meat, poultry or fish, a cupped hand ≈ 1 oz of nuts or snacks, a thumb ≈ 1 tablespoon (peanut butter, dressing) and a thumb tip ≈ 1 teaspoon (oil, butter).

What counts as one ounce-equivalent or cup-equivalent?

Grains, 1 oz-eq: 1 slice of bread, ½ cup cooked rice, pasta or oatmeal, or 1 cup of flaked cereal. Protein, 1 oz-eq: 1 oz cooked meat, poultry or fish, 1 egg, ¼ cup cooked beans or tofu, 1 tablespoon peanut butter or ½ oz nuts. Vegetables, 1 cup: 1 cup raw or cooked, or 2 cups raw leafy greens. Fruit, 1 cup: 1 cup fruit or 100% juice, or ½ cup dried fruit. Dairy, 1 cup: 1 cup milk or yogurt, or 1½ oz natural cheese.

Is portion size the same as serving size?

No. A serving size is the fixed amount on the Nutrition Facts label, based on the FDA Reference Amounts Customarily Consumed (for example 55 g dry pasta). A portion is what you actually put on your plate. The label serving is not a recommendation of how much to eat.

What changed in the 2025–2030 Dietary Guidelines?

The 2025–2030 Dietary Guidelines for Americans express advice in daily servings and emphasise protein at 1.2–1.6 g per kg of body weight, about 3 servings of vegetables, 2 of fruit and 3 of dairy, and 2–4 servings of whole grains on a 2,000-calorie pattern. The cup and ounce-equivalent amounts in this calculator come from the USDA food patterns used for MyPlate, which remain a practical way to size portions.

How do I scale a recipe to more servings?

Divide the servings you want by the servings the recipe makes and multiply every ingredient by that factor. Going from 4 to 10 servings is ×2.5, so 2 cups of rice becomes 5 cups. Seasoning, leavening and cooking times do not always scale linearly, so taste and check doneness when scaling more than about threefold.

Portion Size Calculator

Party food: plan about ½ lb raw boneless meat, ½ lb potatoes or ¼ cup dry rice, ¼ lb vegetables and 1½ rolls per adult. Healthy plate: half vegetables and fruit, a quarter protein (3 oz, about a palm), a quarter grains (½–1 cup, about a fist). At 2,000 kcal USDA patterns give 2½ cups vegetables, 2 cups fruit, 6 oz grains, 5½ oz protein and 3 cups dairy a day.

How much food per person

Party, buffet or catering quantities to buy (raw weight).

Guests

Appetite

Food	Per person	Total
Boneless meat, poultry or fish (main)raw; about 6 oz cooked	8 oz
Bone-in meat or chicken piecesraw	12 oz
Whole turkeyraw, 1–1½ lb	20 oz
Pasta as a main dishdry; about 1½ cups cooked	3 oz
Pasta or grains as a sidedry; about 1 cup cooked	2 oz
Rice as a sidedry; about ¾ cup cooked	¼ cup
Potatoesraw	8 oz
Cooked vegetablesraw; about ½ cup cooked	4 oz
Green saladleaves; about 1½ cups	1 oz
Bread rolls	1.5 each

Pick one main and two or three sides; with several mains, reduce each by about a third. Rules of thumb only.

Healthy portion sizes per meal

USDA Healthy U.S.-Style pattern (ages 9 and up), split across meals.

Calories/day

Meals

Weight (kg)

Food group	Per day	Per meal	By hand

General guidance for healthy adults and older children, not medical or dietetic advice. Pregnancy, diabetes, kidney disease or weight-loss plans need individual advice.

Scale a Recipe

Original Servings

Desired Servings

Ingredients

Fill in the form and click Scale Recipe

What Counts as One Portion

USDA food-group equivalents with a hand-size check.

Unit	Equals	Hand guide
1 cup vegetables	1 cup raw or cooked; 2 cups raw leafy greens	1 fist
1 cup fruit	1 cup fresh or 100% juice; ½ cup dried	1 fist
1 oz-eq grains	1 slice bread; ½ cup cooked rice, pasta or oatmeal; 1 cup flaked cereal	½ fist (cupped hand)
1 oz-eq protein	1 oz cooked meat or fish; 1 egg; ¼ cup cooked beans or tofu; 1 Tbsp peanut butter; ½ oz nuts	3 oz ≈ 1 palm
1 cup dairy	1 cup milk, yogurt or fortified soy milk; 1½ oz natural cheese	1 fist; cheese ≈ 2 thumbs
1 tsp oil	1 teaspoon oil, butter or mayonnaise	1 thumb tip

Daily Amounts by Calorie Level

USDA Healthy U.S.-Style Dietary Pattern, ages 9 and older.

kcal	Veg (cups)	Fruit (cups)	Grains (oz)	Protein (oz)	Dairy (cups)
1,600	2	1.5	5	5	3
1,800	2.5	1.5	6	5	3
2,000	2.5	2	6	5.5	3
2,200	3	2	7	6	3
2,400	3	2	8	6.5	3
2,600	3.5	2	9	6.5	3
2,800	3.5	2.5	10	7	3
3,000	4	2.5	10	7	3

Summary

This portion size calculator answers the three questions people usually mean by "portion size". For a party, dinner or catering job it multiplies standard per-person amounts (for example ½ lb raw boneless meat, ¼ cup dry rice, 1 oz salad greens) by your headcount and appetite and gives the total to buy in pounds, kilograms and cups. For healthy eating it divides the USDA Healthy U.S.-Style food pattern for your calorie level into meals and translates each food group into cups, ounces and hand-size equivalents (a fist ≈ 1 cup, a palm ≈ 3 oz of meat), with the protein target of 1.2–1.6 g per kg from the 2025–2030 Dietary Guidelines. And it scales any recipe from its original servings to the number you need.

How it works

Food per person: enter the number of guests and pick an appetite level (light ×0.8, average ×1, hearty ×1.25). Each total = per-person amount × guests × appetite factor, shown in raw purchase weight.
Healthy portions: choose a daily calorie level and the number of meals. Daily food-group amounts come from the USDA Healthy U.S.-Style pattern; the per-meal amount is the daily amount ÷ meals.
Hand guide: a fist is about 1 cup (vegetables, fruit, cooked grains), a palm without fingers about 3 oz of cooked meat or fish, a cupped hand about 1 oz of nuts, and a thumb about 1 tablespoon.
Protein: enter body weight to get 1.2–1.6 g per kg per day, the range in the Dietary Guidelines for Americans 2025–2030, split across meals.
Recipe scaling: enter the original and desired servings and the ingredients; every amount is multiplied by desired ÷ original servings.

Use cases

Work out how much meat, rice, potatoes and salad to buy for a party of 25 or 100.
Plan a buffet or catering order with a hearty or light appetite crowd.
Find a healthy portion size per meal for a 1,600, 2,000 or 2,400 calorie diet.
Estimate portions without a scale using the hand guide.
Split a daily protein target into grams per meal.
Scale a recipe up for meal prep or down for one or two people.

Frequently Asked Questions

Last updated: 2026-10-10 · Reviewed by Nham Vu