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Utility Calculators

Drinks for a Party Calculator

Verified formula Updated Jun 2026 Private — runs on your device

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hours
Verified formula Private

Total drinks needed

80

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Drinks for a Party Calculator

The Drinks for a Party Calculator works out your total drinks needed in an instant. Enter number of guests, party length and drinks per guest per hour and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the number of guests.
  2. Enter the party length.
  3. Enter the drinks per guest per hour.
  4. Read off your total drinks needed — the calculator updates automatically, with no button to press.

Formula

The Drinks for a Party Calculator uses the formula:

Total drinks needed = Number of guests × Party length × Drinks per guest per hour

Worked example

For example, with number of guests of 20, party length of 4 hours and drinks per guest per hour of 1, the total drinks needed is 80.

Inputs used
Number of guests 20
Party length 4 hours
Drinks per guest per hour 1
Results
Total drinks needed 80

Results are estimates for educational use, not professional advice.

Frequently asked questions

Multiply guests by hours by drinks per hour. 20 guests over 4 hours at 1 drink an hour need about 80 drinks.

A common rule of thumb is about one drink per guest in the first hour and one per hour after, adjusting for the crowd.

Yes. A 10–20% buffer covers heavier drinkers and unexpected guests.

Set the pace to cover all drinks, and offer water and soft drinks so guests have alternatives.

The Drinks for a Party Calculator uses the formula: Total drinks needed = Number of guests × Party length × Drinks per guest per hour. For example, with number of guests of 20, party length of 4 hours and drinks per guest per hour of 1, the total drinks needed is 80.

Enter the number of guests. Enter the party length. Enter the drinks per guest per hour. Read off your total drinks needed — the calculator updates automatically, with no button to press.

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