Party Drink Calculator
Calculate soft drinks, water, juice and ice for a party by guest count and duration.
Formula and sources updated · Data sources · 1View algorithm, constants and default inputs (JSON)
About this calculator
This is an adjustable planning scenario. It estimates drinks from the event duration and drink mix, and treats the children field separately from adult guests. Actual consumption varies; adjust for the menu, weather and guest preferences.
Worked example
calculated with the default values below
Number of guests 30 · Event length 4 hours · Children attending 5 · Drink focus Mixed drinks Total drinks 123 · Soda cans (12 oz) 44 · Water bottles 31 · Juice 6.5 l · Ice 23.8 lb · Cups 148 · Drinks per person 3.5
Method and assumptions
N = G (1 + 0.9 max(0, H − 1)) + 0.6 C H; cans = ceil(N s1); water = ceil(N s2); V_j = 0.35 N s3 L Adult drinks = G × (1 + 0.9 max(0,H−1)); child drinks = 0.6 × C × H. Per-person average divides by G + C. This is an adjustable planning scenario. It estimates drinks from the event duration and drink mix, and treats the children field separately from adult guests. Actual consumption varies; adjust for the menu, weather and guest preferences. The references provide context and limitations. They do not validate this page’s illustrative multipliers, lookup values or predictions.
Data sources
The references provide context and limitations. They do not validate this page’s illustrative multipliers, lookup values or predictions.
Disclaimer
These calculators give general estimates. Sizing, pricing, availability and standards vary by brand, retailer and country, so treat the output as a starting point and confirm it against the seller's or authority's own figures.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
N = G (1 + 0.9 max(0, H − 1)) + 0.6 C H; cans = ceil(N s1); water = ceil(N s2); V_j = 0.35 N s3 L
- G
- Adult guests
- C
- Children
- H
- Party duration (hours)
- N
- Total drink units
- s1,s2,s3
- Soda/water/juice shares by mix
- V_j
- Juice volume (L)
Adult drinks = G × (1 + 0.9 max(0,H−1)); child drinks = 0.6 × C × H. Per-person average divides by G + C.
Frequently asked questions
How does the model estimate drinks for adults and children?
Adults and children are counted separately. Enter adults in guests and children in children. At the defaults, 30 adults over four hours contribute 111 drinks and five children add 12, for 123 total. Drinks per person divides by all attendees.
Which inputs and limits apply to Party Drink Calculator?
Use the units shown beside each field. These are form limits, not recommended settings. Number of guests: 1–1,000; Event length: 0.5–16 hours; Children attending: 0–500 N = G (1 + 0.9 max(0, H − 1)) + 0.6 C H; cans = ceil(N s1); water = ceil(N s2); V_j = 0.35 N s3 L Adult drinks = G × (1 + 0.9 max(0,H−1)); child drinks = 0.6 × C × H. Per-person average divides by G + C. This is an adjustable planning scenario. It estimates drinks from the event duration and drink mix, and treats the children field separately from adult guests. Actual consumption varies; adjust for the menu, weather and guest preferences. The references provide context and limitations. They do not validate this page’s illustrative multipliers, lookup values or predictions.
What is a complete worked example for Number of guests = 30; Event length = 4 hours?
Inputs: Number of guests = 30; Event length = 4 hours; Children attending = 5; Drink focus = Mixed drinks. Calculation: N = G (1 + 0.9 max(0, H − 1)) + 0.6 C H; cans = ceil(N s1); water = ceil(N s2); V_j = 0.35 N s3 L. Results: Total drinks = 123; Soda cans (12 oz) = 44; Water bottles = 31; Juice = 6.5 l; Ice = 23.8 lb; Cups = 148; Drinks per person = 3.5.