While many restaurant owners fear food cost calculations, thinking they need accounting expertise, the reality is refreshingly different. You can master your cost pricing with basic math and a kitchen scale. Skip the courses and diplomas—you'll know exactly what each dish costs in just 10 minutes.
The basics: one simple formula
Food cost represents the percentage of your selling price consumed by ingredients. Here's your only formula:
Food cost % = (Ingredient costs / Selling price excl. VAT) × 100
That's it. No complex accounting principles, no certification required. Just this single calculation.
💡 Example:
You sell a pasta carbonara for €18.50 (incl. 9% VAT):
- Selling price excl. VAT: €18.50 / 1.09 = €16.97
- Ingredient costs: €5.10
Food cost: (€5.10 / €16.97) × 100 = 30.1%
Step 1: Gather your ingredient prices
Skip the accounting textbooks—your supplier invoices contain everything you need. Pull last week's delivery receipts and jot down your main ingredient costs.
Target your 5 top-selling dishes first. Tackling everything simultaneously creates unnecessary stress.
⚠️ Note:
Always calculate excl. VAT. The price on your menu is incl. VAT, but for food cost you calculate excl. VAT.
Step 2: Add everything up per portion
Head to your kitchen with a scale. Weigh actual portions—don't guess. After managing kitchen operations for nearly a decade, I've seen how those "small" ingredients dramatically impact margins:
- Main ingredient (meat, fish, pasta)
- Garnish (vegetables, sauce)
- Oil, butter, salt, pepper
- Bread, decoration
Every component touching that plate affects your bottom line.
💡 Example steak:
- Steak 250g: €7.50
- Fries 200g: €0.80
- Salad + tomato: €0.60
- Sauce: €0.40
- Butter, oil: €0.20
Total per portion: €9.50
Step 3: Check if it adds up
You've got your per-portion cost price. Divide by your selling price (excl. VAT), multiply by 100. Boom—your food cost percentage.
Restaurant industry standard sits between 28% and 35%. Exceeding that range? You're likely bleeding money on those dishes.
Why this works without accounting knowledge
You're simply working with real prices you actually pay. No depreciation schedules, no complex formulas. Just: ingredient cost, menu price, profit margin.
Most restaurant owners master this mental math after a few practice rounds.
💡 Example check:
Steak with €9.50 in ingredients for €32.00 incl. VAT:
- €32.00 / 1.09 = €29.36 excl. VAT
- (€9.50 / €29.36) × 100 = 32.4%
That's good - under 35%
How to make this easier
Manual calculations work fine, but they're time-consuming. Many operators use tools like KitchenNmbrs for automatic calculations. Input your ingredients and prices—the software handles everything else.
You'll see food costs per dish instantly, without manual number-crunching. And supplier price increases? Update once, and every dish recalculates automatically.
How do you calculate food cost in 3 steps?
Gather ingredient prices from your invoices
Get your invoices from last week and write down the prices of ingredients for your 5 best-selling dishes. Focus on main ingredients first, details come later.
Weigh out one portion and calculate the costs
Go to your kitchen and weigh out exactly what goes into one portion. Add up all costs: main ingredient, garnish, sauce, oil, everything that goes on the plate.
Divide by selling price and multiply by 100
Use the formula: (Ingredient costs / Selling price excl. VAT) × 100. Under 35%? Then you're making enough on that dish.
✨ Pro tip
Calculate your top 3 revenue-generating dishes every 2 weeks using actual kitchen scales. This 15-minute routine keeps your most profitable items under that crucial 35% threshold.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Should I include VAT in my food cost calculation?
No, always calculate with the price excl. VAT. For restaurants that's your menu price divided by 1.09. Otherwise your food cost looks lower than it actually is.
What if I don't know my ingredient prices exactly?
Check your latest supplier invoices. They show the exact prices per kilo or per piece. Estimating is too inaccurate for proper cost price calculation.
How much food cost is normal for a restaurant?
Standard is between 28% and 35%. Fine dining can be slightly higher (up to 38%), fast casual often lower (25-30%). Above 35% it becomes difficult to make a profit.
Do I need to do this for every dish?
Start with your 5 best-selling dishes. They represent 80% of your revenue. If those are good, you've solved the biggest part of your problem.
How often should I check my food cost?
At least once a month, or when your supplier raises prices. Ingredient prices change regularly, so your food cost does too.
What about waste and spoilage in my calculations?
Factor in 3-5% for normal kitchen waste when calculating ingredient costs. Track your actual waste weekly and adjust your portions accordingly to maintain accurate food cost percentages.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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