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May 4, 2026
It’s the end of a busy week. Sales looked strong, the kitchen stayed busy, and orders kept moving. Then you check your numbers, and the margins don’t add up. This is where food cost tells the real story.
Most restaurants aim to keep food costs between 28% and 35% of total sales. When your numbers go beyond that range, your profit starts slipping without obvious signs during service. A small gap in your food cost percentage can quickly turn a profitable week into a disappointing one.
In this guide, you’ll learn how to calculate food cost step by step, see a real example, and find practical ways to protect your margins.
Food cost percentage shows how much of your total sales goes toward the ingredients used to prepare your menu items. It tells you how much you spend to generate every dollar in revenue.
For example, if your food cost is 30%, you spend $0.30 on ingredients for every $1 you earn in food sales. The remaining amount goes toward labor, rent, and profit.
This number directly affects how much you actually keep at the end of the week. If your food costs rise, your profit shrinks. Even a small increase can make a noticeable difference in your margins.
Here’s how it impacts your restaurant:
That’s why the food cost percentage is one of the most important numbers to track. It shows where your money is going and highlights where changes are needed to protect your margins.
To calculate your food cost percentage, you need to track what you spend on ingredients and what you earn from food sales during a set period.
Food Cost % = (Beginning Inventory + Purchases – Ending Inventory) ÷ Food Sales × 100
This formula shows how much of your revenue is spent on ingredients.
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Before you calculate, make sure you’re working with accurate numbers. Each part of the formula plays a specific role:
If any of these numbers are off, your final percentage will not reflect your actual costs.
Let’s walk through an example weekly scenario. You start the week with $6,200 worth of inventory. During the week, you purchase $3,400 in ingredients. By the end of Sunday, your remaining inventory is $2,100. Your total food sales for the week come to $18,000.
Here’s how the calculation works:
Food cost = ($6,200 + $3,400 – $2,100) = $7,500
Food cost % = ($7,500 ÷ $18,000) × 100 = 41.6%
This is above the ideal 28–35% range, indicating your margins are tighter than expected.
Now compare this with a more controlled food cost.
If your food cost was 30% instead of 41.6%, the difference would directly impact what you keep from the same $18,000 in sales.
That’s a difference of $2,100 in one week.
Here’s what that gap affects:
This is why calculating food cost is important, as it shows you exactly where your profit is being lost and where you need to take action.
Recommended: Effective Strategies to Control Food Costs in Restaurants.
Most restaurants aim to keep their food cost between 28% and 35% of total sales. This range allows you to cover expenses while keeping a healthy margin. However, the right number for your restaurant depends on your concept, pricing, and menu structure. A single benchmark does not apply to every setup.
Here’s how it typically varies:
What matters most is not hitting a perfect number, but staying within a range that supports your margins. If your food cost goes beyond your ideal range, it signals that something in your pricing, portioning, or purchasing needs attention.
Food cost doesn’t spike overnight. It builds through small gaps during service, purchasing, and reporting. These are easy to miss when your team is focused on getting orders out.
Here’s where it usually slips and how to stay in control:
Staying on top of these areas helps you catch small issues early, before they turn into larger losses.
Keeping food costs under control gets harder when your orders and data are spread across different systems. Phone orders, third-party apps, and manual entries make it difficult to match what you sold with what you actually used.
This is where having everything in one place makes a real difference. With a system like iOrders, your orders flow through a single platform. Whether it’s pickup, delivery, or dine-in, every order is recorded in one place and connected to your POS.
Here’s how that helps you stay accurate:
Once your numbers are accurate, you can take it a step further. With built-in tools like loyalty programs and targeted campaigns, you can use your data to bring customers back and increase repeat orders. This gives you more control over both your revenue and your margins.
If you want better visibility into your numbers and more control over your margins, book a demo to take a closer look at how we can support your setup.
Food cost reflects how your kitchen runs, how your team portions, and how accurately your sales are tracked. When your numbers are clear, you can catch issues early and protect your margins before they start slipping.
The real challenge is keeping your sales and order data accurate across every channel.
With iOrders, all your orders flow through one system and connect directly to your POS. This gives you a clear view of your sales, reduces manual errors, and helps you track food cost with confidence.
Let’s connect and help you get accurate food cost numbers for your restaurant.
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1. How often should I calculate food cost for my restaurant?
You should calculate food cost at least once a week. Weekly tracking helps you catch issues early, especially after busy weekends or supplier deliveries. Monthly tracking alone can hide problems that build over time.
2. Should I calculate food cost for each menu item or overall?
Both matter, but they serve different purposes.
Review item-level costs regularly to adjust pricing or portions where needed.
3. Does food cost include labor and overhead expenses?
No, food cost only includes the cost of ingredients used to prepare menu items. Labor, rent, utilities, and other expenses are tracked separately when calculating your overall profit margins.
4. How do I handle food cost for delivery and takeout orders?
You calculate food cost the same way, but delivery orders can affect your margins differently due to packaging and third-party fees. It’s important to track these separately to see their full impact on your profitability.
5. What should I do if my food cost is consistently above 35%?
Start by reviewing:
Even small adjustments in these areas can help bring your food costs back within a healthy range.
