Party food calculator: how much food and drink per guest
Tell us how many adults and children are coming and for how long, and see how much to buy. Every amount is a rule of thumb shown as a range, and you can change any of them.
For a 4-hour party with 30 adults and 6 children and a sit-down meal, the starting point is about 162 appetizer pieces and 16.2 lb of main protein. These are rule of thumb from open guides, not standards.
Appetizers
162pieces
Range: 64 to 264
5 per person
Main protein
16.2lb
Range: 10 to 20.6 lb
7.35 kg · 8 oz per person
Side dishes, total
72.9cups
Range: 48 to 99 cups
17.2 L cooked, across 3 dishes
Dessert
65pieces
Range: 32 to 99
2 per person
Soft drinks and water
51.1liters
Range: 34.1 to 68.1 L
About 26 bottles of 2 liters
Alcoholic drinks
90drinks
Range: 80 to 100
If all wine: about 15 bottles of 750 ml. If all spirits: about 4.1 L.
rule of thumbRules of thumb from open guides, not confirmed: the range runs from the lowest to the highest figure we found for every item. The big number uses the middle of the range.
See and change the rules of thumb
pieces per person. Range 2 to 8; starts at 5.
pieces per person. Range 8 to 15; starts at 12.
oz per person. Range 5 to 10; starts at 8.
cups per person. Range 0.5 to 1; starts at 0.75.
pieces per person. Range 1 to 3; starts at 2.
8-oz servings per person per hour. Range 1 to 2; starts at 1.5.
drinks per drinker. Range 1 to 2; starts at 1.5.
drinks per drinker per hour. Range 1 to 1; starts at 1.
share of an adult portion. Range 0.33 to 0.5; starts at 0.4.
I already know my portions
Multiply your own figure by the number of guests, with an optional extra.
75 portions, or 83 with the extra (rounded up).
How to work out how much food and drink to buy
Multiply per-person amounts by the number of guests, then adjust for the kind of party.
Start with how many guests are coming and how long they will stay. Food is mostly a multiplication: an amount per person times the number of people. The part that needs judgement is the amount per person, and for that there is no standard. People who cook for crowds publish rules of thumb, and they differ: a sit-down meal needs less finger food than a cocktail party where the appetizers are the whole menu. That is why the calculator asks whether you are serving a meal and shows a different range for each case.
Adults and children
One of the guides says children eat half or a third of an adult portion, depending on age. The calculator counts a child as 0.4 of an adult for food and starts there, and you can change it. Drinks are counted per guest, children included, and alcohol only for the adults you say will drink.
Drinks depend on the hours
The sources we opened give about one alcoholic drink per person per hour, and one of them expects about two in the first hour. Soft drinks run to 1 or 2 servings of 8 ounces per hour. So the number of hours matters more for drinks than the number of guests does. Round up: several guides suggest a little extra, and that is cheaper than running out.
- Portions: 20 + 10 × 0.4 = 24 adult portions.
- Appetizers: 24 × 5 = 120 pieces (range 47 to 200, from 2 to 8 per person).
- Main protein: 24 × 8 oz = 192 oz = 12 lb (5.4 kg).
- Sides: 24 × 0.75 cup × 3 dishes = 54 cups. Dessert: 24 × 2 = 48 pieces.
- Soft drinks: 30 guests × 1.5 servings × 3 hours = 135 servings of 8 fl oz = 31.9 L, about 16 bottles of 2 liters.
- Alcohol: 12 drinkers × (1.5 in the first hour + 1 × 2 more hours) = 42 drinks, which is 7 bottles of wine at 6 glasses each.
Next steps
Once you know the quantities, put prices on them in the budget calculator and add the order dates to the planning timeline. If a guest has an allergy or a dietary need, ask them before you order: no calculator can know that.
These quantities are rules of thumb, not standards, and not confirmed for your event. Ask your caterer for their own figures, and check food safety rules where you live.
The rules of thumb and where they come from
Lowest and highest figure found in the guides we opened. None of them is a standard.
| Item | Range | Starts at | What the guides say |
|---|---|---|---|
| Appetizers before a meal rule of thumb | 2 to 8 pieces per person | 5 | No Spoon Necessary says 2 to 3 (FAQ) or 3 to 5 pieces; Dummies says 6 to 8. |
| Appetizers as the whole menu rule of thumb | 8 to 15 pieces per person | 12 | No Spoon Necessary says 8 to 10 pieces; Dummies says 12 to 15. |
| Main protein, cooked meal rule of thumb | 5 to 10 oz per person | 8 | Dummies says 5 to 6 oz for chopped meats and stews and 8 oz (1/2 lb) for boneless chicken; No Spoon Necessary says 6 to 8 oz in one section and 8 to 10 oz in another. |
| Each side dish rule of thumb | 0.5 to 1 cups per person | 0.75 | No Spoon Necessary says 1/2 to 3/4 cup per side dish and about 1 cup for pasta or potato salad. |
| Dessert rule of thumb | 1 to 3 pieces per person | 2 | Both say 1 slice of cake or pie, or 2 to 3 small treats such as cookies. |
| Soft drinks and other non-alcoholic drinks rule of thumb | 1 to 2 8-oz servings per person per hour | 1.5 | Dummies says 1 to 2 servings of 8 oz per hour; Plum Deluxe says one per hour plus one more each. |
| Alcoholic drinks, first hour rule of thumb | 1 to 2 drinks per drinker | 1.5 | Food Republic and Plum Deluxe say one per hour; No Spoon Necessary says about two in the first hour; Party Rental Ltd. plans 1.5 glasses per person in the first hour (glasses, not drinks). |
| Alcoholic drinks, each later hour rule of thumb | 1 to 1 drinks per drinker per hour | 1 | All three sources say one per hour after the first. |
| Child portion compared with an adult rule of thumb | 0.33 to 0.5 share of an adult portion | 0.4 | No Spoon Necessary says children eat half or a third of an adult portion, depending on age. |
Sources: Dummies (cooking for a crowd) (page dated Mar 26, 2016); No Spoon Necessary (cooking for a crowd) (page dated Sep 7, 2026); Food Republic (how much alcohol) (page dated Apr 5, 2025); Plum Deluxe (beverage math) (page shows no date); Party Rental Ltd. (glasses) (page dated Jul 17, 2025) · opened on
The guides do not always agree, and one of them disagrees with itself: No Spoon Necessary gives 2 to 3 appetizers per person in one place and 3 to 5 in another, and 6 to 8 ounces of protein in one section and 8 to 10 in another. We use the full spread rather than pick one. Conversions to metric use the factors in the NIST Guide to the SI (1 oz = 28.35 g, 1 lb = 0.4535924 kg, 1 US cup = 236.6 mL). The conversion from drinks to bottles uses 6 glasses per 750 ml bottle of wine (Plum Deluxe) and up to 22 mixed drinks per liter of spirits (No Spoon Necessary); both are not confirmed by a standard.
Frequently asked questions
How much food do I need per person?
There is no standard. Guides give a range: for example 6 to 8 appetizer pieces per person before a meal in one guide and 2 to 3 in another, and 5 to 10 ounces of main protein. The calculator shows the lowest and highest figure we found, starts at the middle and lets you change it.
How many drinks per guest per hour?
The sources we opened say about one alcoholic drink per person per hour, with one source expecting about two in the first hour. For soft drinks, one guide says 1 to 2 servings of 8 ounces per hour. All of these are rules of thumb and are not confirmed.
How do I plan for children?
One source says children eat half or a third of an adult portion, depending on age. The calculator uses 0.4 as the starting point and lets you change it.
Why does the page show a range?
Because the guides disagree. The low figure uses the smallest number we found for every item, and the high figure uses the largest. If the range is wide, ask your caterer, or use the "I know my portions" box to multiply your own figure.
Should I buy extra?
Several guides suggest rounding up or adding a little extra, and one suggests a few extra servings for heavier drinkers. How much is your call; the "I know my portions" box has a field for an extra percentage.
Keep planning
Each tool covers one stage of the timeline.