Food Cost Calculator: How to Work Out Your True Food Cost
A dish that looks profitable on the menu can quietly lose you money if the food cost behind it was never properly worked out. Food cost is the percentage of what you charge that goes straight back into ingredients, and it's one of the few numbers that tells you instantly whether a menu actually makes sense. In this article we show how to calculate it per dish, and what to do once you know the number.
The basic formula
Food cost percentage is simply what a dish costs you in ingredients, divided by what you charge for it, multiplied by a hundred. A dish that costs £4 in ingredients and sells for £16 has a food cost of 25%. Most catering businesses aim for somewhere between 25% and 35% depending on the type of event, with weddings and formal dinners often sitting lower and casual buffet-style food sitting a bit higher.
Costing a dish properly
Work out the exact cost of every ingredient at the quantity actually used, not the pack size you bought it in, then add them up per portion. It's tempting to round this, but the small ingredients, herbs, garnish, a splash of oil, add up across a whole menu and are exactly what gets missed in a rough estimate. Build this once per dish and reuse it, rather than re-estimating from memory every time you quote.
What a food cost calculation misses if you stop there
Ingredient cost alone isn't your real cost. Wastage, trim, spoiled stock, and portions that don't sell all eat into the margin a clean food cost percentage suggests you have. A dish with a great 22% food cost on paper can behave more like 30% in practice if a fifth of what you prep doesn't make it to a plate. Track actual usage against what you bought for a few events and you'll usually find the gap.
Using the number to actually improve margin
Once you know food cost per dish, the fixes are usually simple: swap one expensive, low-visibility ingredient for a similar one that costs less, adjust portion size slightly on dishes that are consistently over-served, or restructure a menu so cheaper dishes anchor it and one or two higher-cost items sell the experience. Small, consistent changes across a menu move overall margin more than chasing one expensive ingredient.
Frequently asked questions
What's a good food cost percentage for a catering business?
Most caterers aim for 25% to 35%, though it varies by event type. Formal, plated events often run lower, while casual buffet-style catering tends to sit a bit higher.
Should I include wastage in my food cost calculation?
Ideally yes, or at least track it separately. A clean per-dish food cost can look healthy on paper while actual margin is being eaten by trim, spoilage and over-preparation.
How often should I recalculate food cost?
Whenever ingredient prices shift meaningfully, or at least once a season, since supplier prices move more than most caterers track day to day.
Is a lower food cost percentage always better?
Not necessarily. Push it too low and the dish can feel thin or the portion mean, which costs you repeat bookings. The goal is a sustainable margin, not the lowest possible number.
Want food cost calculated automatically per dish instead of in a separate spreadsheet? Try Catermonkey and see your margin update as you build a menu.
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