You only notice how important turkey size is when you get it wrong. Too small, and everyone is eyeing the last slice. Too big, and you are still finding ways to use it up four days later. If you are asking what size turkey should I buy, the right answer comes down to three things: how many people you are feeding, whether you want leftovers, and whether you are buying a whole bird or a crown.
A good rule from any proper butcher is simple. For a whole turkey, allow around 500g to 700g per person. That usually gives everyone a decent portion, with a bit left over for sandwiches, pies or a curry the next day. If you know your table includes big appetites, or you are planning for Boxing Day leftovers as well, lean towards the higher end.
What size turkey should I buy for my guests?
For most family meals, working by headcount is the easiest place to start. A small gathering of 4 to 6 people will usually be well served by a bird around 3kg to 4kg. If you are cooking for 8 to 10, you are more likely to need something in the 5kg to 7kg range. For 12 or more, you are often looking at 7kg and up.
That said, there is a bit of common sense involved. Not every guest eats the same amount, and not every meal has the same spread. If the turkey is the star of the table with just a few trimmings, go slightly larger. If you are serving plenty of pigs in blankets, stuffing, roast potatoes, vegetables and maybe a gammon joint as well, you can be a touch more conservative.
Children also make a difference. If half the table is little ones, you do not need to count them the same way you would hungry adults. Two young children often work out roughly as one adult portion when you are sizing a turkey.
Whole turkey or turkey crown?
This is where plenty of people come unstuck. A whole turkey includes bone, so the overall weight does not all translate into meat. A turkey crown is easier to carve and gives you more usable breast meat for its size, but you lose the leg and wing meat that some people prefer.
If you are buying a crown, you can usually allow a little less weight per person than you would for a whole bird. Roughly 400g to 500g per person is often enough, depending on how generous you want to be. Crowns suit households that want simple roasting, easy carving and plenty of white meat. A whole turkey suits larger groups, more traditional roasts and anyone who wants the full range of meat and proper stock from the carcass afterwards.
There is no right or wrong choice here. It depends on how you cook, how confident you feel handling a larger bird, and what your family actually likes to eat.
A quick turkey size guide
If you want a straightforward guide, these sizes are a sensible starting point for a whole turkey:
- 3kg to 4kg for 4 to 6 people
- 4kg to 5kg for 6 to 8 people
- 5kg to 6kg for 8 to 10 people
- 6kg to 7kg for 10 to 12 people
- 7kg to 8kg for 12 to 14 people
- 8kg+ for 14 or more people
- 2kg to 3kg for 4 to 6 people
- 3kg to 4kg for 6 to 8 people
- 4kg to 5kg for 8 to 10 people
- 5kg+ for 10 or more people
Should you buy extra for leftovers?
In most households, yes. Leftover turkey is half the point. A proper sandwich with a bit of stuffing and cranberry sauce is hard to beat, and cooked turkey is useful for easy meals over the next couple of days.
If leftovers matter to you, add an extra 1kg to 2kg to your estimate for a whole bird, depending on the size of your group. For a crown, adding 500g to 1kg is often enough. It is a simple adjustment, but it saves you from wishing you had gone a touch bigger.
Of course, there is a trade-off. A larger turkey takes longer to cook, takes up more fridge space and can be harder to handle. If oven space is already tight because you are juggling roasties, parsnips and trays of stuffing, buying the biggest bird available is not always the best plan.
Think about your oven, not just your guest list
One of the most sensible questions is not what size turkey should I buy, but what size turkey can I actually cook comfortably? There is no value in buying a huge bird if it barely fits in the roasting tin or sits too close to the top of the oven.
Before ordering, check the internal dimensions of your oven and roasting tray. Remember the turkey needs air around it, not a tight squeeze. Also think about fridge space if you are collecting it a day or two before cooking. During Christmas week especially, the fridge is already doing a lot of work.
For smaller kitchens, a crown can be the easier option. It roasts more evenly, cooks faster and frees up room for the rest of the meal. For bigger family gatherings, some people even prefer two smaller turkeys or a turkey plus another roasting joint rather than one very large bird.
Fresh or frozen changes your planning
If you are buying fresh turkey, you need to time things properly and make sure you have space to store it safely. The upside is convenience on cooking day and, for many people, a better overall eating experience.
Frozen turkey can be perfectly good, but it needs plenty of time to thaw fully. That is where mistakes happen. A bird that is still partly frozen in the middle can throw your whole cooking schedule off. So when choosing size, remember that bigger frozen birds need several days in the fridge to defrost safely.
A family butcher will usually help you think this through before you buy, which is one of the real benefits of shopping with someone who handles these birds every season rather than treating them as just another shelf item.
What if you are between sizes?
Go up, not down.
That is the honest answer in most cases. A turkey that is slightly too large is usually easier to deal with than one that is too small. Leftovers are useful. Running out at the table is not. If you are torn between, say, a 5kg bird and a 6kg bird for a group of eight, the larger one is often the safer choice, especially if a few guests are known for healthy appetites.
The exception is when oven space is tight or you are already serving plenty of other meat. In that case, stay sensible. If turkey is sharing the table with gammon, beef or a big spread of buffet bits, you can size down a little without anyone going hungry.
When a butcher’s advice matters most
There is a reason so many families still ask their butcher what they recommend. Turkey buying is not just about weight. It is also about shape, breed, preparation and how the bird has been trimmed. Two birds of the same weight can roast a little differently depending on their build.
That is where a proper local butcher can make life easier. If you are feeding a mixed-age group, want enough for leftovers, or are unsure whether a crown would suit you better, it helps to speak to someone who prepares these orders every day. At Reed’s Family Butchers in Corringham, that sort of practical advice is exactly what customers want at Christmas and through the roasting season - clear guidance, honest sizing and no guesswork.
The simplest answer to what size turkey should I buy
If you want one straightforward rule to remember, buy around 500g to 700g of whole turkey per person, or around 400g to 500g of turkey crown per person. Then adjust based on leftovers, appetite and oven space.
That keeps things practical. It gives you enough room to feed everyone properly without going overboard, and it suits the way most families actually cook and eat.
When in doubt, buy for the meal you want, not just the number on the guest list. A relaxed roast with enough to go round always beats a perfect calculation on paper.
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