How the ice calculator works
The calculator starts from a base amount of ice per guest, adds more if you are chilling drinks in coolers as well as serving over ice, and scales up for warm weather and longer events where more ice melts before it is used. The result is total pounds and kilograms, the number of bags to buy, and the amount per guest so you can shop with confidence.
How much ice per person
A common rule is about one pound of ice per guest for serving drinks, rising to roughly two pounds per guest when you also need to chill bottles and cans in coolers. Hot days and long parties push that higher because ice melts faster than it gets used. When in doubt, buy extra, since leftover ice is cheap insurance and runs out faster than people expect.
Cups, coolers, and displays
Different jobs use ice at different rates. Drinks over ice use the least, coolers full of cans use more, and a raw bar or drink display on ice uses the most. If you are running several of these, total them up. Keep serving ice separate and clean from the ice used to chill bottles, so nothing ends up in a glass after sitting around packaging.
Keeping ice from melting too fast
Store ice in coolers in the shade, keep lids closed, and drain melt water sparingly since cold water still helps chill. Block or large cubes melt slower than small cubes and are better for long chilling, while small cubes are better for quick cooling and serving. Buy ice as late as possible before the event.
Frequently asked questions
How much ice for a party of 30? Roughly 60 pounds if you are chilling drinks and serving, more on a hot day or a long event.
How many bags of ice is that? Bags are usually about 10 pounds, so 60 pounds is around six bags.
Should I buy extra ice? Yes. Ice is inexpensive and melts faster than expected, so a buffer of 10 to 20 percent is wise.
Related calculators: Party Beverage, Keg, Punch.