A whole chicken costs less per kilo than parts, but it only works out cheaper if you use nearly everything it comes with and the butchering time does not eat the saving. The way to know is simple: break down one bird, weigh each part, multiply each weight by what that part would cost bought separately, and compare that total with what you paid for the bird plus your time. If the parts are worth more, whole birds pay. If not, buy parts.
Why the cheaper kilo can cost more
When you buy a whole bird you pay the same per kilo for breast as for back and neck. Bought on their own, breasts cost a lot more and carcasses a lot less. The whole-bird price is an average of all of that.
If your kitchen uses every part, that average works in your favour. If you only use the breast for your grilled chicken wraps, you are paying for parts you do not use.
There is a second cost: butchering. Breaking down a chicken takes minutes, and those minutes are yours or someone you pay. The guide to costing your own labour explains how to put a price on that time.
The method: value of the parts
- Break down one bird the way you always do and weigh each part: breasts, legs, wings, carcass with back and neck, and what you throw away (excess fat, skin, giblets if you do not use them).
- Price each part at what it costs bought separately from your usual supplier.
- Add up the value of the parts you use. Only those.
- Add up what you paid for the bird plus the cost of your time.
- Compare. If the parts are worth more, the whole bird wins.
Repeat the weighing with three birds from different deliveries. Size varies, and so does the share of each part.
Worked example: a small lunch kitchen
You run a lunch kitchen with chicken wraps, roast chicken legs and a soup of the day. These are example numbers; yours will come from your scale and your supplier.
The bird. A 2.00 kg chicken at $5.00 per kg: 2.00 × 5.00 = $10.00.
The breakdown. You cut it up and weigh each part:
| Part | Weight | Price bought separately | Value |
|---|---|---|---|
| Breasts, boneless | 0.60 kg | $11.00 per kg | $6.60 |
| Whole legs | 0.70 kg | $6.00 per kg | $4.20 |
| Wings | 0.20 kg | $7.00 per kg | $1.40 |
| Carcass, back, neck | 0.40 kg | $2.00 per kg | $0.80 |
| Fat and skin you discard | 0.10 kg | no value | $0.00 |
| Total | 2.00 kg | $13.00 |
Your time. Breaking down a bird takes you 8 minutes. If you value your hour at $18.00, that is 18.00 × 8 ÷ 60 = $2.40 per bird.
Case 1: you use everything. The parts bought separately would cost $13.00. The whole bird cost you 10.00 + 2.40 = $12.40. You save 13.00 − 12.40 = $0.60 per bird. At 30 birds a week, that is $18.00 a week, about $78 a month.
Case 2: you only use breasts and legs. The parts you use are worth 6.60 + 4.20 = $10.80. You paid $12.40. You lose $1.60 per bird. Buying parts is clearly better here.
Case 3: it takes you 15 minutes per bird. Time is now 18.00 × 15 ÷ 60 = $4.50, so the bird costs $14.50 against $13.00 of parts. Even using everything, you lose $1.50 per bird.
Same chicken, three answers. That is why "whole is always cheaper" does not hold.
The cost per kilo of each part
If you do break down birds, you also need to know what each part costs you, so you can cost each dish. Use a factor:
factor = (what you paid + your time) ÷ value of the parts you use
In case 1: 12.40 ÷ 13.00 = 0.954. Each part costs you its market price times that factor:
- Breast: 11.00 × 0.954 = $10.49 per kg
- Legs: 6.00 × 0.954 = $5.72 per kg
That is the price you put in your wrap recipe, not the $5.00 per kg of the whole bird. Costing the breast at $5.00 would make it look far cheaper than it is, and the wings and carcass would look free.
Thigh instead of breast
Sometimes the question is not whole or parts but which part. In a wrap, a curry or a stir-fry, boneless thigh can stand in for breast. Before you switch, compare per kilo of trimmed meat: thighs often need more fat trimmed off. If boneless thigh costs $8.00 per kg and you keep 880 g of every kilo after trimming, the trimmed kilo costs 8.00 ÷ 0.88 = $9.09. Measure the breast the same way and compare. The guide to ingredient substitutions explains how to test a swap without losing quality or money.
If you portion the chicken cooked, as in pulled chicken, also measure what it loses in cooking, exactly as with beef. That is covered in the guide to meat yield.
When to redo the numbers
- When the price of whole birds or parts changes.
- When you change the menu and stop using one of the parts.
- When someone else does the butchering and is faster or slower than you.
Keep a small sheet with the weight of each part, your time and your supplier's prices. With that, the calculation takes two minutes whenever something changes.
Do it with the calculator
The yield calculator gives you the cost per usable kg of a part after trimming. Then enter each part at its real cost in the food cost calculator to see what each dish on your menu costs you.
Frequently asked questions
Is a whole chicken always cheaper?
Per kilo bought, usually. Per kilo used, not always. If you do not use the wings, back and carcass, or if breaking down birds takes you a long time, buying only the parts you need can work out cheaper.
How much time should I count for breaking down a chicken?
Your own. Time yourself on ten birds in a row and take the average. That time multiplied by what your hour is worth, or what you pay the person doing it, goes into the cost.
What about the carcass and neck?
If they go into stock, soup or a gravy, they have value and count in favour of the whole bird. If they go in the bin, they are worth nothing in the calculation, even though you paid for them.
Can I use thighs instead of breast?
In many dishes, yes, and boneless thigh is often cheaper per kilo. Compare both per kilo of trimmed meat, and per kilo cooked if you portion cooked, since they lose different amounts on the grill.