What Size Roaster Oven Do I Need?
Eighteen quarts covers most tables. Here is the table, and the guest-count math that tells you which bird you are buying in the first place.
By Mike M. · Published · Last updated
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Match the roaster to the bird:
| Roaster capacity | Maximum turkey | Feeds roughly | Room for sides? |
|---|---|---|---|
| 16 qt | Up to about 18 lb | 14 people | No |
| 18 qt | Up to about 22 lb | 17 people | Tight |
| 22 qt | Up to about 26 lb | 21 people | Yes |
| 28 qt | Up to about 28 lb | 22 people | Comfortably |
For most households, 18 quarts is enough and 22 is the comfortable choice if you have the storage space.
Quick picks
| # | Product | Best for | Score | Price |
|---|---|---|---|---|
| 1 |  Nesco 18-Quart Roaster OvenEnough for about 17 guests, in the smallest footprint. | 18 qt — up to 22 lb | 8.9 | |
| 2 |  Oster 22-Quart Roaster Oven with Self-Basting LidThe size that fits a bird plus vegetables underneath. | 22 qt — up to 26 lb | 9.1 | |
| 3 | Hamilton Beach 32215 22-Quart Roaster Oven28 lb capacity and it holds at 125F once the bird is out. | 22 qt with the widest range | 9.1 |
Scores are our own editorial rubric, explained on how we pick. They are not customer ratings and we do not publish star ratings for products we have not handled.
Start with the guest list, not the appliance
The planning figure is about 1.25 pounds of whole, bone-in turkey per person for a full plate with a little left over, or 1.5 pounds if leftovers are the point.
| Guests | Turkey weight | Roaster size |
|---|---|---|
| 6-8 | 8-10 lb | 16 qt is plenty |
| 10-12 | 13-15 lb | 18 qt |
| 14-16 | 18-20 lb | 18 qt, or 22 for room |
| 18-20 | 23-25 lb | 22 qt, or two birds |
| 20+ | 25 lb+ | Cook two smaller birds |
The thing that actually decides 18 versus 22
It is not the bird. It is whether you want to roast vegetables underneath it.
Put the turkey on a rack and fill the bottom of the well with potatoes, carrots and onions. They cook in the drippings for three hours and come out better than anything you would have made in the oven — and they cost you no extra oven space or attention. It is one of the genuinely nice things a roaster does.
Eighteen quarts fits a bird. Twenty-two fits a bird and that bed of vegetables. If the second sounds appealing, that is your answer.
Why bigger is not automatically better
A 28-quart roaster with a 12-pound bird in it is a large mostly empty chamber. It heats more air than it needs to, takes longer to come up to temperature, and gives you a slightly less consistent cook.
It is also a substantially larger object to store for eleven months of the year — which is the reason people quietly stop using appliances. Buy for the bird you cook most years, not the largest one you can imagine.
Above about 22 pounds, cook two
The same logic as fryer sizing applies here. Two 13-pound birds beat one 26-pound bird: they cook faster and more evenly, they fit an 18-quart roaster comfortably, they are far easier to lift, and you can cook one in the roaster and one in the oven.
Our guide to feeding twenty works the whole plan through.
Measure before you commit
Stated capacity is the volume of the cookwell, not a guarantee that your specific bird fits inside with the lid on. Turkeys vary in shape as much as in weight.
Before the day, put the bird in the well and check the lid closes with an inch of clearance above it. If it touches, the lid will not seal, condensation will escape, and you lose the temperature stability that made you buy the roaster.
The products, in detail
#1 · 18 qt — up to 22 lb
Nesco 18-Quart Roaster Oven
Heat wraps the cookwell rather than sitting under it, which is why it browns more evenly than the price suggests. Eighteen quarts still swallows a 22-pound turkey.
- Capacity
- 18 qt
- Max bird
- Up to 22 lb
- Element
- Wrap-around, 1,450 W
- Cookwell
- Removable
What’s good
- Fits tight kitchens
- Even heat
- Still a big bird
What’s not
- Tight with sides
- No self-basting lid on base models
Capacity
8.6
Ease of use
8.8
Evenness
9.2
Value
9.0
#2 · 22 qt — up to 26 lb
Oster 22-Quart Roaster Oven with Self-Basting Lid
The default answer for most first-time hosts. Twenty-two quarts takes a 26-pound bird, and the dimpled self-basting lid drips condensation back down so you are not opening it every 30 minutes.
- Capacity
- 22 qt
- Max bird
- Up to 26 lb
- Lid
- Self-basting
- Insert
- Removable enamel pan
What’s good
- 26 lb bird
- Self-basting lid
- Room for sides
What’s not
- Larger to store
- Overkill under about 15 lb
Capacity
9.4
Ease of use
9.2
Evenness
8.6
Value
9.0
#3 · 22 qt with the widest range
Hamilton Beach 32215 22-Quart Roaster Oven
Buy this one if you want the widest temperature range — it dials from 125F right up to 450F, so it doubles as a warming cabinet after the bird comes out.
- Capacity
- 22 qt
- Max bird
- Up to 28 lb
- Temp range
- 125F to 450F
- Bonus
- Holds food warm all afternoon
What’s good
- Biggest stated capacity
- 125F to 450F
- Doubles as a warmer
What’s not
- Large
- Single knob
Capacity
9.6
Ease of use
8.8
Versatility
9.4
Value
8.8
Frequently asked questions
Yes — 18 quarts is rated to about 22 pounds. It will be snug, and there will not be much room for vegetables underneath. Check the lid closes with clearance before the day.
About 28 pounds in a 28-quart model. Above roughly 22 pounds, though, two smaller birds is nearly always the better plan.
Not unusable, but less efficient. A large mostly-empty chamber takes longer to heat and cooks slightly less consistently. For a 12-pound bird, 16 or 18 quarts is the better match.
In a 22-quart, comfortably — bird on a rack, vegetables below cooking in the drippings. In 18 quarts it is tight with anything over about 18 pounds.
Sources
Related reading
- The Best Electric Roaster Ovens of 2026Five roaster ovens ranked, plus the two accessories that make the difference. No oil, no flame, and your oven stays free.
- How to Use a Roaster OvenThe whole method from preheat to holding the sides warm afterward, with times by weight.
- Thanksgiving Dinner for 20 PeopleQuantities for twenty, the two-bird argument, and the equipment that makes the scale work.
- What Size Turkey Fryer Do I Need?Pot size to bird weight, in one table — plus the guest-count math that tells you which bird to buy in the first place.
- Oster vs Nesco Roaster OvenCapacity and self-basting against even heat and a smaller footprint, compared attribute by attribute.