How to Calculate Food Cost Percentage (With Formula)

Food cost percentage is the single most important number a restaurant or cafe operator should know. It tells you how much of every dollar you earn goes to ingredients. Get it wrong, and you could be serving beautiful dishes at a loss.

What Is Food Cost Percentage?

Food cost percentage is the ratio of ingredient costs to food revenue. For every dollar of food you sell, how many cents went to buying the ingredients?

A food cost percentage of 30% means you spend 30 cents on ingredients for every dollar of food revenue. The remaining 70 cents covers labor, rent, utilities, and profit.

The Formula

Food Cost Percentage = (Cost of Goods Sold / Food Revenue) x 100

If your restaurant did $50,000 in food sales last month and COGS was $15,000:

($15,000 / $50,000) x 100 = 30% food cost

The tricky part is calculating COGS accurately.

How to Calculate Cost of Goods Sold (COGS)

COGS is not just what you purchased. It accounts for what you actually used, based on inventory changes:

COGS = Beginning Inventory + Purchases - Ending Inventory

Example:

• Beginning inventory: $8,000
• Purchases: $18,000
• Ending inventory: $11,000

COGS = $8,000 + $18,000 - $11,000 = $15,000

Without accurate beginning and ending inventory numbers, your COGS is a guess.

Industry Benchmarks

What counts as a good food cost percentage depends on your concept:

• Fine dining: 28-35%
• Casual dining: 28-32%
• Fast casual / QSR: 25-30%
• Cafes and coffee shops: 25-35%
• Bars: 20-25% (for food; pour cost is separate)

The commonly cited ideal is 28-32% for full-service restaurants. But context matters. A pizza shop might run 25% food cost with high labor, while a sushi restaurant runs 35% with lower labor. What matters is that total prime cost (food + labor) stays under 60-65% of revenue.

Per-Item vs. Overall Food Cost

Your overall food cost is the aggregate number above. Each dish also has its own food cost, called the plate cost percentage:

Plate Cost Percentage = (Ingredient Cost per Plate / Menu Price) x 100

A sandwich costing $3.50 in ingredients, sold for $12:

($3.50 / $12) x 100 = 29.2% plate cost

You want both numbers. Overall tells you how the business is performing. Per-item plate costs tell you which dishes are profitable and which are dragging you down.

Common Mistakes That Inflate Food Cost

Most restaurants struggling with food cost are not buying expensive ingredients. They are losing money in less obvious ways:

1. Not counting inventory regularly. Monthly or quarterly counts let thousands of dollars walk out the door before you notice. Weekly counts are the standard for a reason.

2. Ignoring waste. Trim waste, spoilage, and over-portioning increase actual food cost above what recipes predict. If theoretical is 28% but actual is 34%, that 6% gap is waste, theft, or over-portioning.

3. Using outdated ingredient costs. Plate costs based on prices from six months ago are wrong. Prices change constantly, especially proteins and produce.

4. Not accounting for comps and staff meals. At $200/day, that is $6,000/month in real costs that need tracking.

5. Confusing purchases with COGS. Your credit card statement shows what you bought, not what you used. You need inventory counts for actual COGS.

How to Lower Your Food Cost

• Count inventory weekly to catch problems early
• Track waste with a waste log
• Portion consistently using scales, scoops, and standardized recipes
• Update ingredient costs when vendor prices change
• Engineer your menu to push high-margin items
• Negotiate with vendors or compare prices across suppliers
• Cross-utilize ingredients so trim from one prep becomes a component in another dish

Making It Easier

Most operators do not track food cost rigorously because the process is painful. Counting takes hours. Spreadsheets take more hours. Manual COGS calculations are error-prone. By the time you have the number, it is weeks old.

Stockcount removes the friction. Count inventory by voice while walking your storage. COGS, food cost percentage, and plate costs calculate automatically. No clipboards, no spreadsheets, no formulas.

Your food cost percentage updates in real time as you count and log purchases, so you always know where you stand.

Try Stockcount free for 14 days and see what real-time food cost visibility looks like.