Quick answer: A headboard is usually as wide as the mattress or a few inches wider. That makes a queen headboard about 62 inches wide, a king about 80 inches, and a California king about 74 inches. A headboard that comes as part of a bed frame is as wide as the frame, so check the bed's overall width, not the mattress size. There is no standard headboard height: guides quote totals anywhere from about 40 to 58 inches. A better approach is to work out your height from the mattress up. If you sit up in bed, the headboard should at least reach the point where your shoulders rest.
Headboard size sounds like a single number, but it is really two decisions. The width is mostly settled by your mattress. The height is up to you, and it matters more than people expect. Here are the widths for every bed size, why the headboard is nearly always wider than the mattress, and a practical way to choose a height that suits the way you use your bed.
Headboard Sizes at a Glance
| Bed size | Standard mattress (W × L) | Typical headboard width |
|---|---|---|
| Twin | 38 × 75 in | About 41 in |
| Full | 54 × 75 in | About 56 in |
| Queen | 60 × 80 in | About 62 in |
| King | 76 × 80 in | About 80 in |
| California king | 72 × 84 in | About 74 in |
These headboard widths are typical figures for headboards sold on their own, which are made to cover the mattress with a little overhang. Most published charts agree on them to within an inch or two. You will occasionally see a queen headboard listed at 64 inches. Treat any chart as a starting point and check the actual product dimensions.
The headboard's height is not in the table on purpose: no single number would be honest.
Why a Headboard Is Wider Than the Mattress
A headboard that matched the mattress exactly would look undersized, and it would leave the mattress corners exposed to the wall. So headboards run a little wider: stand-alone headboards typically add a couple of inches on each side, as the table shows.
A headboard built into a bed frame works differently: it is usually as wide as the frame itself, and the frame is wider than the mattress. The rails and posts take up room on each side. Our own beds show the range clearly. They all hold a standard US queen (60 × 80 in) or king (76 × 80 in) mattress, but their overall widths vary:
- Queen frames run from 63.5 inches wide (the Haven) to 66.5 inches (the Estate).
- King frames run from 79.5 inches (Haven) to 83.2 inches at the widest point of the Helios headboard.
That is a spread of three to four inches for the same mattress size. In a tight bedroom, it can decide whether a nightstand still fits beside the bed. So when you plan the wall, use the bed's overall width, not the mattress size or a generic headboard chart. Our bedroom furniture size & layout guide covers the clearances around the bed and nightstands.
One size trap is worth knowing about. A California king is not a bigger king. It is 4 inches narrower and 4 inches longer, so a king headboard on a California king bed will overhang awkwardly on both sides. Buy the headboard for the mattress you actually have.
How Tall Should a Headboard Be?
If you look for a standard headboard height, you will find a confusing spread. Published guides give totals from about 40 to 58 inches from the floor. They also disagree about how far a headboard should rise above the mattress, with estimates from about 14 to 30 inches. Those numbers cannot all be standard. The reason they vary is that the headboard's job depends on your bed, and especially on how high your mattress sits.
So work out the height from the mattress up, not from the floor:
- Start at the top of the mattress. A tall mattress on a box spring sits much higher than a mattress on a low platform bed, and the same headboard will look and feel completely different on each.
- Decide what the headboard is for. If it is mainly visual, it only needs to rise clearly above the pillows. If you read, work, or watch TV sitting up, it has to support your back.
- If you sit up in bed, test it. Sit against a wall with your pillows the way you would in bed. Have someone mark where your shoulders rest, and measure from the mattress top to the mark. The headboard should reach at least that high, or you will end up leaning on the wall above it.
- Then check the wall. A tall headboard has to clear windowsills, light switches, outlets, and any art you plan to hang above the bed.
The angle matters as much as the height. A slightly reclined headboard is noticeably more comfortable to lean on than a vertical one. We cover that in the benefits of a slanted headboard.
Low Platform Beds Need Less Headboard
On a platform bed the mattress sits directly on the frame's slats, with no box spring. This puts the mattress top lower, so a lower headboard can rise just as far above it. That is why platform-bed headboards often look short on a spec sheet but work well in a room. Our seven bed frames range from 36.2 inches tall to 47.2 inches, measured from the floor:
- The lowest: the Estate's headboard tops out at 36.2 inches. The Helios stands at 37.8 inches.
- Adjustable: the Haven's headboard sets at 37.0, 38.2, or 39.4 inches, so you can match it to your mattress thickness. The Heritage has two heights, 37.0 and 41.3 inches.
- The tallest: the Savannah and the Pebble rise to 43.3 inches at the top of the headboard. On the Pebble that height includes its upholstered headboard cushions. The Kurumi, with its tufted dark green leather headboard, reaches 47.2 inches.
If you have a thick mattress and like to sit up, look to the taller end of that range or an adjustable headboard. With a thinner mattress, or a bed you mostly sleep in, a lower headboard keeps the room feeling open.
Check the Wall Behind the Bed
A headboard lives against a wall, and that wall has a baseboard. Some beds are designed so the headboard can still sit flush against it. The Haven's headboard extends backward to clear the baseboard, and the Estate's legs are set in under the frame for the same reason. Others are not. The Helios, for example, has no baseboard clearance, so it will stand slightly off a wall with a baseboard. Check this if you want the headboard tight to the wall.
Look at the top edge as well. A headboard with a flat top or a ledge gives you a place for a phone or a book. The Haven has a 2-inch ledge, and the Helios has a flat top edge. That is useful if your nightstands are small. Every bed we make is in our walnut bed frames collection.
Sources & Further Reading
- Headboard Sizes Chart and Dimensions Guide (Amerisleep) and Headboard Sizes Chart (Nectar). These are the sources for typical headboard widths: about 41, 56, 62, 80 and 74 in for twin, full, queen, king and California king.
- Mattress Sizes Chart and Dimensions Guide (Amerisleep). It gives the standard US mattress sizes: twin 38 × 75, full 54 × 75, queen 60 × 80, king 76 × 80 and California king 72 × 84 in.
- Published headboard height guides. They give totals from about 40 to 58 in, and anywhere from about 14 to 30 in above the mattress. They disagree, and that disagreement is why this guide works from the mattress up.
- Bedroom Furniture Size & Layout Guide. It covers bed frame dimensions and the clearances around the bed.
