It seems that every time you host a party, you never prepare the right amount of food and beverages. From the time that you overshot the buffet and had leftovers for months to the last minute drink run at your last shindig, something just doesn’t add up.

Luckily, this handy food and beverage calculator from Real Simple will help you to calculate exactly how many refreshments to make for your party size. Simply enter the number of guests that you’re expecting and whether or not their children are also invited and the online tool will do all of the food and beverage planning for you.

The calculator’s results detail how many bottles of wine, cases of beer, and even ice to purchase. It also details cheese by the pound, hors d’oeuvres by the piece and a number of other food options. Take the results with you to the grocery store and you can be sure that you’re getting exactly the right amount of everything for your party.

Party Food and Beverage Calculator [Real Simple]