How to Calculate Food Cost Percentage (and Why It Matters)

What is food cost percentage?

Food cost percentage is the cost of ingredients used in a period expressed as a percentage of the food revenue earned in the same period. It is not the same as food cost per dish (which is a fixed amount) - it is a ratio that changes with your menu prices, waste levels, and purchasing efficiency. A restaurant with 30% food cost keeps 70 cents of every food sale dollar before labour, rent, and other costs.

The food cost percentage formula

Example: opening stock value 3,200, purchases during the week 4,800, closing stock value 2,600, food revenue for the week 18,000. Cost of goods used = 3,200 + 4,800 - 2,600 = 5,400. Food cost % = 5,400 / 18,000 x 100 = 30%. This is your actual food cost - what you really spent on ingredients to generate that revenue, accounting for spoilage and waste built into the stock movement.

Theoretical food cost is a separate calculation: the cost you would have if every dish were made exactly to recipe with zero waste. The gap between theoretical and actual food cost is your loss - from waste, over-portioning, theft, or recipe drift. Most well-run restaurants keep this gap below 2-3 percentage points.

What is a good food cost percentage?

There is no single right answer - target food cost depends on your concept and price point:

• Fast food and QSR: 25-30%. High volume, simple ingredients, tight portioning control.
• Casual dining: 28-35%. Wider menu, more prep labour embedded in food cost.
• Fine dining: 28-38%. Premium ingredients and more waste in prep, offset by higher menu prices.
• Pizza and pasta: 22-28%. Low ingredient costs with high perceived value.
• Seafood and steakhouses: 35-42%. Premium proteins with high raw material cost.
• Cafes and coffee shops: 25-35% on food; coffee often runs 15-20% as a standalone.

Food cost vs prime cost

Food cost percentage only measures ingredients. Prime cost adds labour (kitchen and front-of-house wages and employer contributions) to get the total direct operating cost. Prime cost = food cost + beverage cost + labour cost. The industry target for prime cost is typically 55-65% of revenue. If your food cost is 32% and your labour cost is 30%, your prime cost is 62% - leaving 38% to cover rent, utilities, marketing, and profit.

Tracking both metrics weekly rather than monthly catches problems faster. A food cost that drifts from 30% to 34% over four weeks represents thousands of pounds or dollars in lost profit that is recoverable if caught early.

How to reduce food cost percentage

• Standardise recipes and portion sizes - kitchen scales and recipe cards prevent over-portioning, which is the most common cause of food cost creep.
• Conduct weekly stock counts - monthly counts miss theft and waste. Weekly counts create accountability.
• Reduce your menu - a smaller menu means fewer ingredients, less waste, and more volume per SKU which improves purchasing power.
• Negotiate with suppliers on your top 5 highest-cost ingredients - even a 5% saving on your protein spend can reduce overall food cost by 1-2 percentage points.
• Implement FIFO (first in, first out) stock rotation - older stock gets used before new deliveries, directly reducing spoilage waste.
• Track waste separately - a daily waste log by category shows exactly where losses occur and lets you address root causes.

Common mistakes

• Using sales price instead of revenue in the formula - if you include VAT or service charges in revenue, your food cost % will appear artificially low.
• Counting only purchases, not stock movement - buying 5,000 of stock in a week does not mean you used 5,000. The stock count adjustment is essential for an accurate figure.
• Ignoring staff meals and wastage - these are real costs. Either charge them to a staff meals account or include them in your food cost calculation.
• Targeting the same food cost for every menu category - a 30% target across the board makes no sense when your burgers naturally run at 25% and your steaks at 40%. Use menu engineering to balance the overall percentage rather than forcing every dish to the same rate.

Use the tools

The Portion Cost Calculator calculates the ingredient cost of a single dish from your recipe. The Menu Item Profit Optimizer shows how your food cost percentage on any item compares to revenue contribution. The Restaurant Break-Even Calculator shows how your food cost percentage affects the revenue you need to reach profitability.