Party Planning Calculator
Estimate food, drink, ice, and supplies from your guest count and party length
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Quick summary
Tell the calculator your guest count, how long the party runs, and the style, and it estimates appetizer pieces, main servings, alcoholic and non-alcoholic drinks, ice, and napkins using standard host rules of thumb (roughly one drink per guest per hour, six appetizer bites per person per hour at a cocktail party). Round up for big eaters, hot weather, or a crowd that likes to linger.
Reviewed by Simple Calculators TeamLast reviewed
How to use this calculator
- Enter the inputs requested by the calculator.
- Choose the units or options that match your situation and review the assumptions.
- Run or update the calculation to see the result.
- Review the result, breakdown, and formulas shown on the page.
- Check the inputs, units, dates, and limitations before saving or sharing the result.
Frequently asked questions
How much food do I need for a party?
It depends on whether food is the meal or an accompaniment. For a cocktail party with no main, plan ~6 appetizer pieces per person per hour. For a dinner party, plan a full main serving (plus ~25% extra) and lighter appetizers. This calculator adjusts by party type.
How many drinks per person at a party?
The classic rule is about one drink per guest per hour — so a 20-person, 4-hour party needs roughly 80 drinks. Split it toward alcoholic vs non-alcoholic based on your crowd; this tool assumes a 60/40 split when alcohol is served.
How much ice should I buy?
Plan about 1–1.5 lbs of ice per guest for drinks and chilling — more in hot weather or if you're filling coolers. It's cheap and always runs out first, so err high.
Are these amounts exact?
No — they're caterer/host guidelines to get you in the right ballpark, not a precise science. Appetites, event length, time of day, and whether a meal is served all shift the numbers. Buy a little extra of the cheap, non-perishable items.
Key terms
- Cocktail Party
- An event built around passed appetizers and drinks, with no seated meal.
- Serving
- One typical portion of a dish per guest; mains often add ~25% for seconds.
- Rule of Thumb
- A rough planning ratio (e.g., one drink per guest per hour), not an exact figure.
Methodology, sources & limitations
This page shows the formula, assumptions, and limitations used for this estimate. Rates, thresholds, and other time-sensitive inputs can change, so verify them against the relevant official source before relying on a result.
For our review approach and the primary sources we consult, see the methodology and source policy. If you spot an outdated figure or formula, please contact us with a correction.