What is the Food Cost Equation?

The food cost equation is a number for each item on your menu if you run or operate a restaurant. The food cost percentage indicates the price of each item that is on your menu, that also includes the ingredients.

The formula is to calculate:

Cost of ingredients is divided by the menu price, then multiply the result by 100.

For Example: A sandwich that costs you $4 in ingredients and you are selling it for $16, which means it is a 25% food cost. Most full-service restaurants aim to land somewhere between 25% and 35% overall; it totally depends on each item.

This number matters because everything else, such as rent, payroll, utilities, and insurance, has to come out of what's left. Running your food costs too high across the board can mean doing good sales volume and still having very little profit at the end of the month.

Smart operators recalculate this regularly, not just once when they build the menu. Ingredient prices move, sometimes fast, and a dish that was fine six months ago might be quietly losing you money now. It's worth building a habit of checking your invoices against your menu prices every quarter, or sooner if you're seeing prices spike on core ingredients.