A standard sideboard is 48–64" wide, 18–20" deep, and 34–38" tall, and it needs 36–42" of clear floor in front so you can serve and still pass a pulled-out chair. Buffets skew wider and a touch taller; credenzas sit lower and longer. The number that trips people up isn’t the width of the piece — it’s the walking room you forgot to leave behind the chairs.
Front view
width
34–38"
height
Side view
18–20" depth
36–42"
serving clearance
Measure to the top surface for height; clearance is measured from the front face to the wall or chair backs.
Sideboard sizes at a glance: small to credenza
Names get used loosely — sideboard, buffet, and credenza all describe a low dining-room cabinet — but the sizing splits along a few predictable bands. Here’s every common variant in one table so you can match a piece to your wall and your table run.
| Type | Width | Depth | Height | Serving clearance in front |
|---|---|---|---|---|
| Small sideboard | 40–48" | 16–18" | 32–36" | 36" |
| Standard sideboard | 48–64" | 18–20" | 34–38" | 36–42" |
| Large buffet | 64–80" | 18–22" | 36–40" | 42" |
| Credenza (low, long) | 60–72" | 16–20" | 28–32" | 36" |
What to Look For When Buying a Sideboard
Fit the wall; these decide storage and durability.
- Height — 34 to 38 in serves as a buffet without stooping
- Storage mix — drawers for flatware, cabinets for platters
- Depth — 18 to 20 in holds dishes without eating the walkway
- Length — leave clearance so doors and drawers open fully
- Material — solid wood and dovetailed drawers last for decades
| Option | Typical US price | Best for |
|---|---|---|
| Small | $200–600 | Compact rooms |
| Standard | $400–1,500 | Most dining rooms |
| Solid wood | $1,000–3,000 | Heirloom |
Prices are typical US ranges and vary by brand, size, and materials — ballparks, not quotes.
Notice the credenza row: it’s the longest and the lowest, which is why it reads as sleeker and works under a big piece of art. A buffet is the tall, storage-heavy end of the family and usually the one people actually plate food on. If you’re torn between two, picture the moment you set a heavy roasting pan down — the taller, deeper piece wins that test every time.
How wide should a sideboard be for your wall?
Keep the sideboard shorter than the wall and, ideally, no wider than your dining table. A good rule: the cabinet should span roughly two-thirds of the open wall, leaving 6–12" of breathing room on each side so it doesn’t look wedged in. On a 96" wall, that lands you around a 60–64" piece — a standard sideboard.
The mistake I see constantly is buying to fill the whole wall. An 80" buffet on a 90" wall crowds the corners and blocks the light switch or outlet you actually need. Measure the clear wall between obstructions, not the full room dimension. If you’re still deciding how much floor the table itself eats up, size that first with our guide to dining table size by room, then park the sideboard on the leftover wall.
Prefer to skip the arithmetic? Here’s the two-thirds rule worked out for the wall runs I measure most. Take the clear span between obstructions, then read across.
| Clear wall length | Target sideboard width | Best-fit type |
|---|---|---|
| 72" | 44–48" | Small sideboard |
| 84" | 52–56" | Standard sideboard |
| 96" | 60–64" | Standard sideboard |
| 120" | 72–80" | Large buffet |
When a single wall won’t give you the run, two narrow cabinets flanking a doorway or window can stand in for one long sideboard — size each to two-thirds of its own wall segment and keep the tops at a matching height so they read as a set.
What actually fits inside: sizing depth to your dishware
Depth barely moves across the whole family — 16–22" covers almost everything — but it quietly decides what the cabinet can swallow. A 16" slim profile takes dinner plates and flat platters, then fights you on anything tall or a stacked set of chargers. Step up to 18–20" and stemware stands upright, a full stack of plates leaves room to grab them, and most serving bowls drop straight in.
Reach for 20–22" only if you’re storing a punch bowl, a slow cooker, or oversized platters — and only when the floor can spare it, because every extra inch of depth comes straight off your walking lane. Watch the baseboard, too: a chunky trim can hold the back of the cabinet 1–2" off the wall, which pushes the whole piece forward and nibbles your clearance. A notched back panel or a thin scribe strip closes that gap.
Sideboard height: why 34–38" is the sweet spot
Height matters more than people expect because you serve off the top. At 34–38" a sideboard lines up close to standard counter height, so lifting a hot dish onto it feels natural and you’re not stooping. Go lower — a 30" credenza — and it becomes a display piece more than a serving surface; that’s fine if plating isn’t the point.
One overlooked check: if you’re hanging a mirror or art above it, leave 6–10" between the top of the cabinet and the bottom of the frame. Any tighter and the two elements fight. The same top-surface logic drives our numbers for kitchen counter height and depth, so if the sideboard sits near a kitchen pass-through, match them loosely for a cleaner sightline.
Width by type (inches)
bar length = relative width • label = actual size
Small
40–48" W • 32–36" H
Standard
48–64" W • 34–38" H
Buffet
64–80" W • 36–40" H
Credenza
60–72" W • 28–32" H
Depth stays close across all four: 16–22". Add 36–42" of clearance in front of any of them.
The clearance number people skip
Leave 36" minimum in front of the sideboard, and 42" if that’s the side people walk down while chairs are pulled out. This is the single most common regret: the cabinet fits the wall perfectly, then a diner pushes back their chair and there’s no room to squeeze past with a serving platter.
Remember a dining chair eats roughly 20" when pulled out. So the real math is: wall to table edge, minus chair pull-out, minus the sideboard depth, and you want 30"+ of actual walking lane left. It’s the same clearance discipline behind our kitchen island size and clearance numbers — a low cabinet with people circulating around it lives or dies on that walkway. If the room is tight to begin with, confirm it works for a full table using dining room size for 6–8 seats before you commit to a wide buffet.
Measure your dining room before you buy: a 4-step check
The tape measure settles every delivery-day argument. Run these four checks before you order, and run them in this order:
- Clear the wall. Measure the open span between outlets, trim, radiators, and door swings — not the raw room width. That number caps your width.
- Take two-thirds. Multiply the clear wall by 0.66 for a maximum width, then leave 6–12" of breathing room on each side.
- Map the walking lane. Add the sideboard depth to a 20" chair pull-out and confirm you still have 30"+ of lane from the table edge to the cabinet face.
- Check the serving height. Make sure the top lands at 34–38" so a hot dish sets down near counter height without a stoop.
Styling the sideboard so it reads "right"
- Rug overlap: if a rug runs under the table, stop it short of the sideboard — the cabinet sits on bare floor, not half-on-half-off. Our rug size under a dining table guide gives the exact setback.
- Lamp height: table lamps on a 34–38" sideboard should top out around 58–64" from the floor so the shade sits at eye level for a standing guest.
- Balance with the room: a long, low credenza pairs better with a leggy table; a chunky buffet suits a heavier trestle. If you’re coordinating the sideboard with seating in an open-plan space, our note on sofa size for the living room helps keep the two zones in proportion.
Planning several rooms at once? Roomly’s room and furniture size guides cover the whole house, and if the dining room shares a wall with a bedroom or hallway, the bed and mattress size guide keeps your circulation paths consistent from room to room.
Before you buy, check the piece against your space with the free room fit & clearance calculator — enter the room and the furniture to see the walkway it leaves.
Frequently Asked Questions
They overlap heavily. A buffet is the taller, storage-heavy version at 36–40" and is built for plating food. A credenza is lower and longer, 28–32" tall, and reads sleeker. "Sideboard" is the catch-all term and usually lands right in the middle at 34–38".
Yes, and it usually is. A dining table runs about 30", while a sideboard sits at 34–38". That height gap is intentional — it puts the serving surface near counter height so you’re not bending to plate food.
Most are 18–20" deep, with slim models at 16" and heavy buffets up to 22". In a tight room, a 16" depth buys you back precious walking space without giving up much storage.
Plan for 36" between the pulled-out chairs and the front of the sideboard, or 42" on the main walking side. A pulled-out chair takes about 20", so measure from the chair back — not the table edge — when you check the fit.