The difference between food cost percentage and GP% in hospitality — and why it matters

Walk into most hospitality businesses and you will find both metrics in use. The chef talks about food cost. The finance team talks about GP margin. They are often discussing the same dish, the same week, the same operation — and they are both right. The problem is that when operators use these terms interchangeably, or conflate one with the other in the wrong context, the decisions that follow tend to be poorly grounded.

This article explains both metrics clearly, explains what each one is good for, and explains where operators go wrong when they reach for the wrong one.

Food cost percentage: what it is and how to calculate it

Food cost percentage is the cost of your food ingredients as a proportion of your food revenue.

Food cost % = (Cost of Food Sold ÷ Food Revenue) × 100

So if a dish sells for £12 and the ingredients cost £3.60, the food cost percentage on that dish is 30%.

At a business level, if your kitchen generated £20,000 in food revenue in a week and your cost of goods for food was £6,400, your food cost percentage is 32%.

Industry benchmarks for food cost percentage sit between 28% and 35% for most full-service operations. Below 28% and you may be under-portioning or your pricing is unusually aggressive. Above 35% and the kitchen is likely costing the business margin somewhere: over-ordering, waste, portion drift, or a pricing structure that has not kept pace with supplier costs.

GP%: what it is and how it relates to food cost

Gross profit margin (GP%) is the percentage of revenue you retain after the cost of goods sold.

GP% = (Revenue − Cost of Goods Sold) ÷ Revenue × 100

You will immediately notice that this is the arithmetic inverse of food cost percentage. If your food cost is 30%, your food GP is 70%. If your food cost is 35%, your food GP is 65%.

They are measuring the same underlying reality: how much of each pound of revenue is left after you pay for what you sold. Food cost percentage looks at what you spent. GP% looks at what you kept. Same number, different direction.

So why does it matter which one you use? Because the framing changes how useful the metric is in a given context.

When food cost percentage is the right metric

Food cost percentage is the metric of the kitchen. It is the language chefs understand, because it connects directly to individual dishes and purchasing decisions.

When you tell a head chef that the kitchen needs to run below 32% food cost, they can translate that target straight onto the menu. They can look at a dish costed at 38% and know it is a problem. They can weigh a portion change, a supplier swap, or a price adjustment and see immediately whether it moves the number in the right direction.

The granularity of food cost percentage at dish level is genuinely useful. Recipe costing, menu engineering, and supplier negotiations all work in this language. It is operational: specific, actionable, and tied directly to what goes out of the kitchen.

It is less useful, however, when the conversation moves upward. Telling a board or a finance director that food cost is 31% requires them to mentally translate that into GP before they can situate it on a P&L. It is also a limited basis for comparison across sites or operation types, because food cost percentage is a pure food metric.

When GP% is the right metric

GP% is the metric of the P&L. It is how accountants, finance teams, and multi-site operators think about margin, because it sits naturally alongside other line items and lends itself to comparison.

Benchmarking a 68% GP restaurant against a 72% GP bar is a meaningful comparison: both figures live on the same scale and tell you something about how efficiently each site converts revenue into contribution. Comparing food cost percentages across those two venues tells you far less, because the cost structures of a kitchen and a bar are fundamentally different.

GP% is also the metric that multi-site operators need when they are looking across the estate. Site A is running 69% blended GP. Site B is at 63%. That comparison is immediately legible. You do not need to convert anything to understand which site has a margin problem.

For P&L conversations, board reporting, and any context where margin needs to be read alongside rent, labour, and other costs, GP% is the cleaner and more useful number. If you are not yet sure what gross profit margin means in hospitality more broadly, that article covers the fundamentals.

The blended complication

Most hospitality operations sell both food and drink. When you track a single metric across the combined F&B line, the number becomes harder to interpret.

The cost structures of food and drink are quite different. Food costs typically run at 28–35%. Drink costs tend to be lower: a well-run bar can achieve drink costs in the 20–25% range, because drinks carry less waste, less per-unit labour, and more pricing headroom. When you blend the two into a single food cost percentage, you get a figure that reflects neither category accurately.

Blended GP%, by contrast, is a meaningful indicator even across mixed operations. Most full-service venues should be running 60–70% blended GP. If you are consistently below 60%, the business is under structural margin pressure regardless of how full the room is. That benchmark holds across different operation types and service models.

The practical implication: track food cost percentage separately for food, drink cost separately for drink, and use blended GP% as your top-line margin indicator. Collapsing everything into a single food cost percentage obscures where the problem actually is.

Actual versus theoretical: the distinction that applies to both

Whether you are working with food cost percentage or GP%, there is a further distinction that matters: the difference between your theoretical figures and your actual figures.

Theoretical food cost (or theoretical GP) is what your recipes and standard portion sizes say you should achieve. It is the number you calculate on paper using your agreed recipe costs and your sales mix.

Actual food cost (or actual GP) is what you measure when you count real stock: opening stock, plus purchases in, minus closing stock, divided by revenue.

The gap between theoretical and actual is where the business leaks. Waste that is not accounted for in recipes. Deliveries that were short but not credited. Portion sizes that have drifted over months of service. A dish whose recipe was costed when one ingredient was cheaper and has not been updated since.

An operation might have a theoretical food cost of 29% and an actual food cost of 34%. Both numbers are correct. The 5-point gap is the conversation that needs to happen: what is causing it, where it is coming from, and how to close it.

This distinction applies equally to GP%. A business that only ever looks at theoretical GP is, in effect, measuring what it wants to believe rather than what is happening. For more on how to track these figures without a full recipe database, see the guide to tracking food costs without recipes.

The short version

Food cost percentage and GP% are measuring the same thing from opposite directions. Neither is more correct than the other. The question is which framing is most useful for the decision you are making.

Use food cost percentage when you are talking to the kitchen, costing dishes, or managing purchasing targets. Use GP% when you are reviewing the P&L, comparing sites, or having financial conversations with partners or investors.

Track them separately for food and drink. Use blended GP% as your top-line indicator. And always know the difference between your theoretical and actual figures: because that gap, wherever it sits, is the margin your operation is either protecting or losing every week.

If you want to see what it looks like when both metrics are visible in the same platform, connected to real stock takes and real sales data, take a look at how Hops works.