How to Calculate Food Cost Percentage
The formula, a worked example, ideal ranges by restaurant type, and five concrete ways to lower yours without cutting quality.
What is food cost percentage?
Food cost percentage is the share of your food sales spent on the ingredients that go into the dishes you sell, expressed as a percentage.
Food Cost % = (Cost of Goods Sold ÷ Food Sales) × 100It is the single most-watched margin metric in restaurants because food is usually your largest variable cost and the one you can most directly control day-to-day. A move of just two or three percentage points compounds fast — a café doing $40,000 a month in food sales loses or gains $800 to $1,200 a month for every 2 percentage points of food cost drift.
Operators usually calculate it weekly or monthly. Weekly is better because it catches portioning drift, theft, and supplier price creep early. Monthly is the minimum and is what most accountants will reconcile against your stock count and purchases.
How do you calculate food cost percentage?
Take your cost of goods sold (COGS) for the period, divide it by the food sales for the same period, and multiply by 100.
COGS isn't just your purchases — it's what you actually consumed. The honest formula is: opening stock + purchases − closing stock. Here is a worked example for a small café over one week.
| Line | Amount (USD) |
|---|---|
| Opening food stock (Monday) | $1,420 |
| Food purchases during the week | $1,180 |
| Closing food stock (Sunday) | $1,390 |
| Cost of goods sold | $1,210 |
| Food sales for the week | $4,280 |
| Food cost percentage | 28.3% |
If you skip the stock count and just divide purchases by sales, you will misread any week where you stocked up for a holiday or ran down inventory before a closure. The discipline of an opening and closing stock count is what makes the number trustworthy.
What is a good food cost percentage for a restaurant?
Most full-service restaurants target 28% to 35%; cafés can run lower because beverage margins subsidise food; fine dining usually runs higher because premium ingredients shrink the margin.
| Segment | Healthy food cost range |
|---|---|
| Café / coffee shop | 22% – 30% |
| Casual dining | 28% – 35% |
| Fine dining | 35% – 45% |
| Quick service / fast casual | 25% – 32% |
Your target depends as much on your menu mix as on your segment. A pizza-heavy menu can sit at 24% comfortably; a steakhouse running below 35% is probably under-portioning. Pick a target you can defend with a recipe-by-recipe build-up, not an industry average.
What's the difference between theoretical and actual food cost?
Theoretical food cost is what your recipes say each dish should cost; actual food cost is what your stock movement shows you really consumed. The gap between them is where money quietly leaves the kitchen.
Theoretical food cost multiplies each dish's recipe cost by the quantity sold on the POS. Actual food cost is the COGS formula above (opening + purchases − closing). When the two diverge, the gap is over-portioning, waste that wasn't logged, comped items, theft, or recipe drift.
A 1–2 percentage-point gap is normal noise. A persistent 4+ point gap is a real leak that compounds into thousands of dollars a year for a mid-sized restaurant.
BasilBook computes both side-by-side: theoretical from your versioned recipes and POS sales, actual from purchases and your latest stock count. The variance shows up on the dashboard so you do not have to chase it down with spreadsheets.
How do you lower your food cost percentage?
Move five levers, in this order: recipe accuracy first, then waste, then portioning, then supplier pricing, then menu mix.
- Fix your recipes first — If the recipe is wrong, every other number is wrong. Build each recipe with real measured weights and current ingredient prices, and re-cost monthly.
- Log waste with reason codes — Spoilage, overcooked, dropped, staff meal — each is a different problem. Without reason codes you cannot tell which to fix.
- Tighten portioning — Use scoops, scales, and ladles, not 'a handful.' Standard portions are the single biggest lever between theoretical and actual cost.
- Re-bid your top 10 ingredients quarterly — Most of your spend sits in 10–20 SKUs. Get two competing quotes per quarter on those and ignore the long tail.
- Engineer the menu — Push high-margin, fast-moving dishes to the top of the menu. Cut chronic underperformers with high cost and low velocity.
Done in that order, most restaurants see a 2–4 percentage-point improvement within one quarter — without raising prices or dropping ingredient quality.