Calculadora de Bebida para Festa
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
drinks_total = convidados × horas × drinks/h | garrafas = ceil(drinks/5)
About this calculator
This calculator estimates the amount of drinks needed for your party based on the number of guests and event duration. It uses an average consumption rate of 2 drinks per person per hour, converting the total into bottles of 5 drinks each. It's a practical tool to avoid shortages or excess, based on general averages.
The formula works in two steps: first, multiply the number of guests by the party hours and the rate of 2 drinks/hour. Then, divide the total drinks by 5 (drinks per bottle) and round up to get the number of bottles. For example, 10 guests for 4 hours yield 80 drinks, which equals 16 bottles.
Use this calculator when planning parties, barbecues, gatherings, or any event with alcoholic beverages. It helps with budgeting and purchase logistics. Remember that consumption varies based on guest profile (light or heavy drinkers) and the type of drink served.
Cautions: the calculator uses a general average; adjust the consumption rate to 1 drink/hour for formal events or 3 drinks/hour for lively parties. It does not include non-alcoholic drinks, water, or ice. Always buy a little extra for unforeseen circumstances.
Frequently asked questions
Does the calculator work for any type of drink?
It calculates total drinks but does not differentiate types. Use the average of 5 drinks per bottle for beer, wine, or spirits, adjusting as needed.
What if my guests don't drink much?
You can reduce the rate to 1 drink per hour per person. The calculator allows manual adjustment of the consumption rate.
Should I buy whole bottles or calculate by liter?
The calculator uses standard bottles of 5 drinks. For other sizes, divide the total drinks by the bottle's capacity in drinks.
Does it include non-alcoholic drinks?
No. The calculator focuses on alcoholic beverages. For sodas and juices, consider about 1 liter per person for the whole event.
What safety margin is recommended?
Add 10% to 20% to the total bottles to cover unforeseen events, such as extra guests or higher consumption.