Inputs used
- Adult guests
- Event length (hours)
- Drinking profile
- Adults not drinking alcohol (%)
- Wine share (%)
- Beer share (%)
- Spirits share (%)
- Purchasing buffer (%)
wedding alcohol calculator
How the Wedding Alcohol Calculator works
Assumptions, formula, inputs, and practical limits for the Wedding Alcohol Calculator.
How this estimate works
The estimate assumes guests drink more in the first hour, less in later hours, then adjusts for the selected drinking profile and rounds bottles up. It is a shopping-list planning estimate, not a recommendation for consumption, and venue rules or local laws always take priority.
- Estimated drinking guests = adult guests x (1 - non-drinker percentage).
- Base rate = two drinks in the first hour and one drink in each later hour.
- The light, average, or party profile adjusts that base rate.
- The chosen purchasing buffer is applied before bottle and can counts are rounded up.
Outputs generated
- total drinks
- wine bottles
- beer bottles/cans
- spirits bottles
- mixer estimate
- shopping list
Worked example
For 100 guests over 5 hours with an average profile, the calculator estimates 660 total drinks after buffer. With a 50/35/15 split, that becomes 66 wine bottles, 231 beers, and 6 spirit bottles.
Wedding drinks planning examples
These examples use the calculator's average profile, five-hour event, and default 10% buffer. Change the inputs for your event.
| Adult guests | Estimated total drinks | Example 50/35/15 split |
|---|---|---|
| 25 | 165 drinks | 17 wine bottles, 58 beers, 2 spirit bottles |
| 50 | 330 drinks | 33 wine bottles, 116 beers, 3 spirit bottles |
| 75 | 495 drinks | 50 wine bottles, 174 beers, 4 spirit bottles |
| 100 | 660 drinks | 66 wine bottles, 231 beers, 6 spirit bottles |
| 150 | 990 drinks | 99 wine bottles, 347 beers, 9 spirit bottles |
| 200 | 1320 drinks | 132 wine bottles, 462 beers, 12 spirit bottles |
Bar planning checklist
- Confirm venue rules, corkage, service requirements, and closing times.
- Plan water, soft drinks, coffee, alcohol-free options, ice, glassware, and garnishes separately.
- Ask suppliers whether unopened bottles can be returned.
- Share the estimate with the venue or caterer before buying.
- Confirm who is allowed to serve alcohol and when service must stop.
- Check chilling space, delivery timing, and storage before the event.
- Separate toast drinks, cocktail hour, table wine, and evening bar assumptions if they differ.
- Keep alcohol-free options visible in the plan, not as an afterthought.
When this estimate may be wrong
- Guest drinking habits, travel, weather, meal timing, and venue service style can change demand.
- Legal restrictions and venue rules override any calculator estimate.
- The calculator estimates quantity for planning; it should not be used to encourage overconsumption.
- Children, non-drinkers, pregnant guests, drivers, and guests leaving early should not be counted as alcohol-consuming adults.
- Cocktails, welcome drinks, champagne toasts, and late-night service can change the drink mix.
- Supplier case sizes, return rules, and minimum orders can change the final shopping list.
Limits of the estimate
Follow local alcohol laws and venue rules. Do not use this to encourage overconsumption.
Confirm venue rules, supplier returns, bartender or licensing requirements, glassware, ice, water, mixers, storage, chilling, and alcohol-free options before placing a final order. Keep a record of the assumptions used so the venue or caterer can review the list.