LineSweep

Free restaurant tool

Restaurant Food Cost Calculator

See how much food your restaurant used during a period—and what percentage of food sales it represents.

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Values for your food cost calculation
Sales for the same period
Value at the period's start
Food bought during the period
Value at the period's end

Your result

Food cost —
Food cost % —

Enter all four values to calculate your food cost.

Beyond the monthly calculation

Still rebuilding this from invoices and spreadsheets?

LineSweep turns restaurant invoices into organized cost and inventory data—so you can see spend, price changes, item history, and inventory value without starting from scratch each month.

Start with your invoices

The formula

How to calculate restaurant food cost

Food cost measures the value of food used during a specific accounting period. To calculate it, add the inventory you had at the start of the period to the food you purchased, then subtract the inventory left at the end.

Beginning inventory + Purchases − Ending inventory = Food cost

Then divide food cost by food sales for that same period and multiply by 100.

Food cost ÷ Food sales × 100 = Food cost %

Example calculation

A restaurant food cost example

Suppose a restaurant starts the month with $8,000 of inventory, buys $15,000 of food, and ends with $7,500 of inventory.

Food cost$8,000 + $15,000 − $7,500 = $15,500

Food cost percentage$15,500 ÷ $50,000 in food sales = 31.0%

The 31.0% result is useful when compared with the restaurant's budget, menu pricing, and prior periods. It is not automatically good or bad on its own.

Reading the result

What food cost percentage tells you

Food cost percentage shows how much of each dollar in food sales was consumed by food cost. If the result is 31%, the restaurant used about 31 cents of food for every dollar of food sales during that period.

There is no universal ideal percentage. Quick service, fine dining, bakeries, bars, and ingredient-heavy concepts have different economics. Your most useful comparison is usually your own target, your menu mix, and the same calculation over time.

Why inventory matters

Purchases are not the same as food used

A large delivery near the end of the month increases purchases, but much of that food may still be on the shelf when the month closes. Subtracting ending inventory keeps that unused value out of the period's food cost. Beginning inventory adds back the food already on hand when the period began.

Use consistent counting methods and valuation rules at both ends of the period. Otherwise, changes in the count—not changes in the operation—can distort your result.

Common mistakes

What can throw off your food cost calculation

  • Mismatched dates. Sales, purchases, and inventory counts must cover the same period.
  • Using total restaurant sales. If beverage costs are excluded, use food sales rather than all sales.
  • Counting inconsistently. Changing units or valuation methods between counts creates artificial movement.
  • Missing credits and returns. Vendor credits should reduce purchases for the correct period.
  • Ignoring transfers or staff meals. Record material adjustments consistently so comparisons remain meaningful.
  • Watching only the percentage. A stable percentage can hide vendor price increases, waste, or menu-mix changes.

The inputs behind the percentage

Invoice and vendor-price tracking make the number easier to explain

The monthly percentage tells you what happened. Item-level invoice history helps explain why. A higher result might come from vendor price increases, a different sales mix, waste, over-portioning, or an inventory-count issue.

LineSweep organizes invoice items, purchase prices, categories, and inventory costs in one place, giving you the detail behind the calculation. See how LineSweep works or learn about its inventory software.

Common questions

Restaurant food cost FAQ

What is the formula for restaurant food cost?

Beginning inventory + purchases − ending inventory = food cost. Divide that result by food sales and multiply by 100 to calculate food cost percentage.

What is a good food cost percentage?

There is no single ideal percentage for every restaurant. Concept, menu mix, service model, pricing, and accounting choices all matter. Compare your actual percentage with your own target and prior periods.

Should food cost include beginning and ending inventory?

Yes. Purchases show what arrived, not what was actually used. Beginning and ending inventory adjust purchases to estimate the cost of food consumed during the period.