Quilt Width and Length Sizing
On this page
Quick answer: Measure your shoulder girth (around your shoulders at the widest point), then pick a quilt whose width is roughly your girth plus 8–12 inches. That puts most average back sleepers in a ~52 in "standard" quilt and side sleepers, broad builds and restless sleepers in a ~55–60 in "wide." Choose a length rated for your height plus a few inches, and in a hammock you can usually go a size narrower than on the ground.
Quilt width and length sizing matter more for quilts than for sleeping bags. A bag zips closed no matter how you move; a quilt only works if its edges reach the pad and stay there. Too narrow and you get drafts every time you roll over. Too wide and you carry extra fabric and down you don't need. This guide shows how to measure, how to read maker width charts, and how sizing changes between ground and hammock use.
Why width is the most important quilt measurement
When you lie under a quilt on a pad, the quilt has to cover the top of your body and drape down both sides to meet the pad. The width remaining after it goes over your shoulders is what seals the edges. A side sleeper's shoulders are taller off the pad than a back sleeper's, so they use up more width just going over the top.
Most "why am I cold" complaints in otherwise appropriate quilts trace back to drafts at the sides, which is usually a width problem. See why am I cold in my quilt for other causes.
How to measure shoulder girth
- Wear the layers you'd sleep in (a base layer, maybe a light fleece).
- Stand relaxed with arms at your sides.
- Wrap a soft tape measure around your shoulders and upper arms at the widest point, usually just below the shoulder joints.
- Keep the tape snug but not tight. Record the number in inches.
- If you sleep in a puffy jacket on cold nights, measure again wearing it and use the larger number for winter quilts.
Typical adult shoulder girths range from about 40 in for smaller builds to 55 in or more for larger or muscular builds. Also measure hip girth if your hips are wider than your shoulders.
Width sizing table
Here is a starting-point table for ground sleepers. Quilt width is measured flat at the shoulder (the widest point). Makers name their sizes differently, so compare the actual inches.
| Shoulder girth | Back sleeper | Side sleeper | Restless / stomach sleeper |
|---|---|---|---|
| Under 42 in | ~50 in (narrow/slim) | ~52 in | ~54 in |
| 42–46 in | ~52 in (standard) | ~54–55 in | ~55–58 in |
| 46–50 in | ~54–55 in | ~56–58 in (wide) | ~58–60 in |
| 50–54 in | ~56–58 in | ~60 in | ~60–64 in |
| Over 54 in | ~60 in | ~62–64 in (extra wide) | ~64 in+ |
These are guidelines drawn from common maker recommendations, not hard rules. Many cottage makers offer at least three widths (for example roughly 50, 55 and 60 in), sometimes more. Our quilt size calculator runs the numbers for you, and our best wide quilts roundup covers models that size up well.
Worked example
Sam has a 47 in shoulder girth and sleeps mostly on their side. Width needed ≈ 47 + 10 = 57 in. The nearest options from a typical maker are 55 in and 58 in. Sam rotates between sides during the night, so the 58 in "wide" is the safer pick. The extra width costs about 1.5–2 oz on a 20°F quilt, much less than the warmth lost to repeated side drafts.
Width at the hips and footbox
Quilts taper from shoulders to feet. Many standard quilts measure roughly 46–50 in at the hips and 38–42 in at the footbox. If your hips are broad or you sleep with knees drawn up, check those secondary measurements. A generous taper is especially important for side sleepers; see best quilts for side sleepers and the quilt footbox guide.
Choosing length
Quilt length is listed as the flat length or as a maximum user height. Because quilts have no hood, most people want the quilt to reach at least to their chin, and on cold nights to tuck around their head and neck.
| Your height | Typical length name | Approx. quilt length |
|---|---|---|
| Up to ~5'6" | Short | ~66–72 in |
| Up to ~6'0" | Regular | ~72–78 in |
| Up to ~6'6" | Long | ~78–84 in |
| Over 6'6" | Extra long / custom | ~84 in+ |
Size up in length if you:
- Like to pull the quilt over your head on cold nights.
- Wear a down hood or puffy jacket with a hood inside the quilt.
- Have a footbox that compresses against your toes when you stretch out.
- Sleep diagonally in a hammock, which uses more length.
Size down if you're right at the bottom of a size range and never pull the quilt up past your neck. Short quilts are popular with ultralight hikers who pair them with a hooded puffy; the jacket covers the shoulders and the quilt stops at the chest. That approach saves several ounces but works best above freezing. See quilt layering system.
Hammock vs ground sizing
In a hammock, the fabric cradles you, so the top quilt drapes down the sides naturally and your underquilt seals the bottom. Width is less critical, and many hammock campers use a quilt 2–4 in narrower than they would on the ground.
| Factor | Ground | Hammock |
|---|---|---|
| Width priority | High (edges must reach the pad) | Moderate (hammock walls help) |
| Typical width for average build | 52–55 in | 50–52 in |
| Length priority | Moderate | Higher on a diagonal lay |
| Pad straps | Very useful | Not needed |
| Footbox preference | Sewn or snapped | Open or zippered common |
If you use the same quilt for both, size for the ground. A slightly wide quilt in a hammock just tucks in; a narrow quilt on the ground leaves you cold. More on hammock-specific fit in the hammock top quilt guide.
How pad width changes the quilt width you need
The quilt has to drape over you and down the sides of the pad. A wider or thicker pad uses up more of the quilt's width before the edges touch anything. A rough way to estimate it:
Width needed ≈ (your body's arc over the pad) + (2 × pad thickness) + a few inches of overlap on each side
| Pad | Typical width / thickness | Effect on quilt width |
|---|---|---|
| Closed-cell foam | ~20 in / ~0.75 in | Smallest; standard quilts usually fine |
| Regular inflatable | ~20 in / ~3 in | Adds roughly 4–5 in of drape compared with foam |
| Wide inflatable | ~25 in / ~3–4 in | Consider the next width up |
Worked example: a back sleeper on a 20 in foam pad is comfortable in a 52 in quilt. Switching to a 25 in wide, 3.5 in thick inflatable adds about 5 in of pad width plus around 7 in of extra side depth to cover. The same 52 in quilt now barely reaches the pad edges, and drafts appear. Many sleepers in this situation either move to a ~58 in quilt or rely on pad straps to pull the edges down onto the pad sides. Our best sleeping pads for quilts lists pad dimensions.
Sizing for two people
Couples can use a double quilt (often roughly 70–80 in wide) over two pads coupled together. Width needs depend on whether both partners are side sleepers; most makers suggest each person's width needs add up with some overlap. See best double quilts.
Weight cost of sizing up
| Change (20°F, 850 FP) | Approx. extra weight |
|---|---|
| Standard → wide width | ~1.5–2.5 oz |
| Regular → long length | ~1.5–2.5 oz |
| Regular/standard → long/wide | ~3–4.5 oz |
Approximate, and varies by maker and rating (colder quilts add more because more down is required per square inch). For whole-kit context, see the quilt weight guide.
Before ordering, lay a blanket or tarp on your pad at home, measure out the width you're considering, and lie under it on your side. If the edges lift off the pad when you roll, go wider. It takes five minutes and prevents the most common quilt-buying mistake.
Common sizing mistakes
- Choosing narrow to save weight as a side sleeper, then fighting drafts all night.
- Measuring chest instead of shoulders; shoulder girth including arms is usually larger.
- Ignoring pad width: a 25 in wide pad needs more quilt to wrap around than a 20 in pad.
- Not accounting for winter layers, which can add several inches of girth.
Once you've nailed size, pair it with the right temperature rating and a way to keep the edges sealed using pad attachment straps. Then use how to choose a top quilt to finalize your build.
Frequently asked questions
How wide should my backpacking quilt be?
A common rule is shoulder girth plus 8 to 12 inches of usable width so the edges reach the pad. Many average-build back sleepers fit a 52 in quilt; side sleepers, broad-shouldered or restless sleepers often prefer 55 to 60 in.
What length quilt do I need for my height?
Pick a length rated for your height plus a few inches; most makers list a maximum user height. If you wear a hood inside or pull the quilt over your head, go one size longer.
Do I need a wider quilt for a hammock?
Usually not. In a hammock the fabric wraps around you and the underquilt seals the sides, so many people use standard widths. Very large or restless hammock sleepers may still want wide.
Is a wide quilt much heavier?
Typically 1 to 3 oz heavier depending on rating, because makers add down to keep loft the same across the larger area. For many side sleepers, that's a better trade than a draftier narrow quilt.