Food Cost Percentage: The Restaurant Menu Pricing Formula, Worked
Short answer: food cost percentage is what an item costs you to make, shown as a share of what you charge for it. The formula that turns a cost into a price is Price = Item Cost ÷ Target Food Cost %. A dish that costs you £4.00 to plate, priced against a 30% target, sells for £13.33. That's the whole calculation — no spreadsheet macro required, just division most people forgot they could do in their head.
Most small operators price by feel. A dish "seems about right" at £12, a competitor charges £14 so you charge £13.50, or a price just hasn't moved since the menu was first printed. None of that tells you whether the dish is actually making money once ingredients, not just intuition, are in the equation. This walks through the formula properly — per dish and across the whole menu — with a real worked example, the number the industry treats as healthy, and the mistakes that quietly wreck an otherwise sound price.
How do you calculate food cost percentage?
Divide what an item costs to make by what you sell it for, then multiply by 100:
Food cost % = (Cost of ingredients ÷ Selling price) × 100
Say a chicken tikka wrap costs you £3.20 in ingredients — chicken, wrap, sauce, garnish, portioned packaging — and you sell it for £9.99. Divide 3.20 by 9.99, multiply by 100, and you land at roughly 32%. That single number tells you, at a glance, whether the wrap is pulling its weight or quietly draining margin every time it sells.
The formula only works if the cost side is honest. Weigh or measure the actual portion that goes on the plate, not the pack size you bought it in. A kilo bag of rice that costs £1.80 isn't £1.80 per portion — it's £1.80 divided by however many portions that bag actually yields, and that number is worth knowing to the penny, not roughly.
The formula for pricing a single dish
Flip the equation around and you get the pricing formula, which is the one that actually matters day to day:
Price = Item Cost ÷ Target Food Cost %
Here's the worked example in full. Say a pasta dish costs £4.00 in ingredients, and you're targeting a 30% food cost:
£4.00 ÷ 0.30 = £13.33
That's the price the dish needs to sell at to hit your 30% target. Tighten the target to 28% and the same £4.00 dish needs to sell at £14.29. Loosen it to 35% and it drops to £11.43. Same ingredients, same plate, three different prices — the target percentage you pick is what moves the number, not the dish itself.
Our food cost calculator does this maths for you — plug in your dish cost and target percentage and it spits out the price instantly, no mental arithmetic mid-shift. Worth bookmarking if you're pricing a whole menu in one sitting rather than one dish at a time.
Check your maths against total COGS, not just one dish
Pricing dish by dish gets you most of the way there, but it's worth sanity-checking against your overall cost of goods sold (COGS) at the end of the month, because per-dish estimates drift. Ingredient prices creep, portions get generous when a new hire's on the line, and a "30% target" menu can quietly run at 34% in practice.
The overall formula:
Overall food cost % = Total food purchases ÷ Total food sales
Say you spent £9,000 on food purchases last month and rang up £28,000 in food sales. That's 9,000 ÷ 28,000 = 32.1% — close enough to a 30% target that it's probably just normal variance, not a red flag. If that number had come back at 41%, something's off: portions running large, waste in the kitchen, or a menu priced against costs that have since gone up.
Ask most small operators what their food cost percentage is and you'll get a shrug, or a number that turns out to be a guess from two years ago. It's usually not laziness — it's that nobody ever sat down and actually ran the numbers, because the maths always felt like it belonged to accountants, not to someone running a kitchen. Run it once, properly, on a slow afternoon. It rarely takes more than twenty minutes, and it's the twenty minutes that tells you which items on your menu are actually paying the bills.
What's a "good" food cost percentage?
According to WebstaurantStore's restaurant menu pricing guide — one of the foodservice industry's most widely cited operator resources — most profitable restaurants aim to keep food cost somewhere in the 28-35% range. Exactly where in that range a given restaurant sits shifts by concept — ingredient quality, portion size, volume, and how much of the price customers are paying for the experience rather than the plate all pull it around, in ways that go beyond a single generic rule of thumb.
There's no single correct number here, and chasing an unrealistically tight food cost can backfire — thinner margins mean less room to absorb a bad week, a supplier price hike, or a batch of wasted stock. The target is a planning tool, not a law. Pick a number that suits your positioning, price against it consistently, and revisit it when your costs actually move.
The table below shows what the pricing formula does to the same £4.00 dish as the target percentage moves — useful for seeing, at a glance, how much room a tighter or looser target actually buys you.
| Target food cost % | Price for a £4.00 dish | Gap vs. 30% target |
|---|---|---|
| 25% | £16.00 | +£2.67 |
| 28% | £14.29 | +£0.96 |
| 30% | £13.33 | — |
| 32% | £12.50 | −£0.83 |
| 35% | £11.43 | −£1.90 |
Small moves in the target percentage swing the price more than most people expect — which is exactly why guessing a price instead of running the formula so often leaves money on the table.
Common mistakes that wreck a food-cost-based price
- Pricing off gut feel. "That sounds about right for a burger" isn't a formula — it's a guess that happens to sometimes land near the right number, and sometimes doesn't. Cost the dish first, then price it.
- Ignoring labour and packaging. Food cost percentage covers ingredients only. A dish with cheap ingredients but a fiddly ten-minute prep, or one that needs an expensive clamshell box for delivery, can still lose money at a "healthy" 30% food cost if labour and packaging aren't priced in somewhere else.
- Not re-pricing when supplier costs rise. Cooking oil, chicken, cheese — prices move, sometimes sharply, and a menu priced against last year's costs quietly drifts to a much higher real food cost than anyone's tracking. Re-run the maths every time a key ingredient's cost shifts by more than a few percent.
- Copying a competitor's price without knowing your own cost. Their £13.99 burger might sit at a comfortable 28% for them and a brutal 45% for you, depending on what you're paying for beef, buns, and cheese. A competitor's price tells you what the market will bear — it tells you nothing about whether that price actually works for your kitchen.
Where the priced menu actually goes
Once a dish is priced properly, the number still has to reach the customer clearly, and that's a separate job from the maths. A digital or QR-code menu is the easiest place to get pricing right the first time — no reprinting a laminated page every time a supplier cost forces a change, just an edit that goes live in minutes.
And pricing correctly is only half the battle for average order value. Menu engineering tactics — layout, photos, item naming, where a dish sits on the page — sit on top of a sound food-cost price and can lift what a healthy-margin dish actually sells, without touching the number itself.
Food cost, delivery commission, and why the maths gets harsher
Food cost percentage matters even more once a delivery-app commission gets stacked on top of it. A dish priced at a comfortable 30% food cost on a direct WhatsApp or QR order can slide into losing money the moment a delivery platform takes its cut off the same sale — commission rates that run well into double digits, as we break down with the actual per-platform numbers in real commission maths. That post walks through exactly how the stacking works and why a food cost that looks fine on paper can still leave nothing behind once a third party's fee comes out of the same order.
The bottom line
Food cost percentage is (cost ÷ price) × 100, and the pricing formula that actually sets your menu is price = cost ÷ target %. A £4.00 dish against a 30% target prices at £13.33 — full stop, no guesswork needed. Most profitable restaurants land somewhere in the 28-35% range, with exactly where you sit in it depending on your own concept rather than a fixed rule. Cost each dish honestly, check your overall COGS monthly to catch drift, and re-run the maths whenever a supplier price moves. If the manual version of this feels like more arithmetic than you want mid-shift, our food cost calculator does the division for you — cost in, target in, price out.