Cost per portion turns a full batch or recipe cost into the ingredient cost of one serving. It is one of the most useful numbers for menu pricing because it connects recipe costing with food cost percentage and gross profit.
Use actual finished portions when possible. A recipe that is planned for 24 portions but only produces 20 saleable portions has a different cost per portion than the written recipe suggests.
Cost per portion formula
The basic formula is simple, but the input quality matters. Total recipe cost should include all ingredients used in the batch, and portion count should reflect actual saleable portions.
| Formula | Meaning | Example |
|---|---|---|
| Cost Per Portion = Total Recipe Cost / Number of Portions | Ingredient cost for one finished serving | $36 / 12 = $3.00 |
How to calculate ingredient cost per serving
Convert the purchase unit into the same unit used by the serving before multiplying. For ingredients priced by the pound, divide the pound price by 16 to find the cost per ounce.
These quick examples calculate one ingredient only. Add the remaining ingredients, sauces, sides, garnish, and packaging to find the complete portion cost.
| Purchase information | Serving amount | Calculation | Ingredient cost |
|---|---|---|---|
| $6.00 per lb ground beef | 6 oz | $6.00 / 16 oz x 6 oz | $2.25 |
| $1.60 per lb potatoes | 8 oz | $1.60 / 16 oz x 8 oz | $0.80 |
| $2.40 per lb tomatoes | 8 oz | $2.40 / 16 oz x 8 oz | $1.20 |
| $18.00 for a 5 lb package | 6 oz | $18.00 / 80 oz x 6 oz | $1.35 |
How to calculate cost per portion
- Add the ingredient costs for the full recipe or batch.
- Confirm the number of finished saleable portions.
- Divide total recipe cost by finished portions.
- Compare the result with selling price, target food cost percentage, and gross profit.
- Update the calculation when supplier prices, yields, portion sizes, or batch waste change.
How cost per portion supports menu pricing
Once you know cost per portion, you can calculate food cost percentage by dividing portion cost by selling price. You can also estimate a suggested menu price by dividing portion cost by your target food cost percentage.
| Known number | Next calculation | Use |
|---|---|---|
| Cost per portion | Cost / selling price x 100 | Food cost percentage |
| Cost per portion | Cost / target food cost % | Suggested menu price |
| Selling price and cost | Selling price - cost per portion | Gross profit per item |
Use actual finished portions when possible
Batch yield often changes after trimming, cooking, holding, or portioning. If a batch is supposed to make 24 servings but only produces 22 clean portions, the cost per portion should use 22.
Cost per portion examples for different food businesses
The formula stays the same, but the finished unit changes. Define the saleable unit before dividing so the result matches the way the item is priced.
| Operation | Batch cost and yield | Cost per portion | Next pricing check |
|---|---|---|---|
| Restaurant soup | $36 / 12 bowls | $3.00 per bowl | Compare with menu price and food cost target |
| Bakery | $48 / 24 saleable pastries | $2.00 per pastry | Add labor, packaging, and display waste |
| Food truck | $82.50 / 30 complete orders | $2.75 per order | Include disposable packaging and event fees |
| Catering tray | $72 / 20 planned servings | $3.60 per serving | Add buffer, labor, delivery, and minimums |
Cost per portion example
A soup recipe costs $36.00 in ingredients and produces 12 finished portions. The cost per portion is $3.00.
| Input | Calculation | Result |
|---|---|---|
| Total recipe cost | Ingredient total | $36.00 |
| Finished portions | Saleable servings | 12 |
| Cost per portion | $36.00 / 12 | $3.00 |
| Suggested price at 30% | $3.00 / 0.30 | $10.00 |
Watchouts
Common mistakes
Dividing by planned portions instead of actual finished portions.
Leaving out garnish, sauce, included sides, bread, packaging, or batch waste.
Using a portion cost from a different portion size than the selling price.
Forgetting supplier price changes after the recipe was first costed.
Keep reading
Related guides
Portion Cost Formula
Learn the portion cost formula with restaurant, catering, ingredient package, and cost-per-serving examples plus practical pricing checks.
Read guideHow to Calculate Recipe Cost
A practical method for adding ingredient costs, yield, and portion cost before pricing a recipe.
Read guideHow to Calculate Food Cost Percentage
Calculate food cost percentage with the formula, worked restaurant examples, target ranges, and practical pricing checks for one item or recipe.
Read guideHow to Calculate Ingredient Cost
Learn how to calculate ingredient cost from package price, package size, usable yield, unit conversion, and the amount used in a recipe.
Read guideFrequently asked questions
How do you calculate cost per portion?
Divide the total recipe cost by the number of finished saleable portions.
What is a portion cost formula?
Cost Per Portion = Total Recipe Cost / Number of Portions.
Should labor be included in cost per portion?
Ingredient cost per portion usually excludes labor. Labor should be reviewed separately when setting final menu or catering prices.
Can cost per portion be used for catering?
Yes. Catering teams can multiply cost per portion by guest count, then add labor, packaging, delivery, rentals, buffer, and profit.