by Amerisleep Mattress Dimensions 2026: Sizes + Heights for All AS Models
Every Amerisleep mattress size from Twin to Split King — exact width, length, and height by model. Room requirements, weight per size, and a full sizing guide so you order the right bed the first time.
TL;DR — Amerisleep Dimensions at a Glance
Amerisleep ships all standard US mattress sizes. Queen (60"×80") is the most popular — fits most master bedrooms without issues. Heights range from 10" (AS1) to 15" (AS5 Hybrid Plus). The AS3 all-foam Queen is the best-selling size/model combination and weighs 75 lbs. No specialty sizes needed: Amerisleep fits standard frames, bases, and sheets. Split King = two 38"×80" Twin XL units, ideal for adjustable bases. Full size chart and room requirements below.
What this guide covers
Amerisleep Mattress Dimensions: Full Size Chart
Amerisleep produces all seven standard US mattress sizes. Every size uses identical internal layer construction — the only variable is the cut dimensions of the foam or hybrid layers, which stay consistent with ISPA (International Sleep Products Association) standards.
| Size | Width | Length | Best for |
|---|---|---|---|
| Twin | 38" | 75" | Kids, single adults in tight rooms |
| Twin XL | 38" | 80" | Tall singles, college dorms, half of Split King |
| Full | 54" | 75" | Single adult who wants more width |
| Queen | 60" | 80" | Couples, master bedrooms — best-seller |
| King | 76" | 80" | Couples who need max width, large rooms |
| California King | 72" | 84" | Tall sleepers 6'2"+, long narrow rooms |
| Split King | 2 × 38" | 80" each | Couples with adjustable bases, different firmness |
One practical note on Twin vs Full: the Full adds 16 inches of width over a Twin but the same 75-inch length. For a single adult taller than 6 feet, the Twin XL (80 inches) is the better choice over a standard Twin — the extra 5 inches of length matters more than the width difference when sleeping solo. For a deeper look at how these models perform, the Amerisleep mattress reviews cover each AS model from AS1 to AS5.
Heights by Model: AS1 Through AS5
Height (also called profile or thickness) varies by Amerisleep model, not by size. Ordering a Queen AS3 and a King AS3 gets you the same height — only the footprint changes. The table below shows the profile for every current and recent Amerisleep model.
| Model | Height | Type | Notes |
|---|---|---|---|
| AS1 | 10" | All-foam | Firmest feel, lowest profile |
| AS2 | 12" | All-foam | Medium-firm, standard height |
| AS3 (all-foam) | 12" | All-foam | Best-seller; 5-zone support |
| AS3 (Hybrid) | 13" | Hybrid | 1" taller than all-foam due to coil base |
| AS4 | 12" | All-foam | Discontinued; replaced by AS3 Hybrid |
| AS5 Hybrid | 14" | Hybrid | Softest model, high-profile build |
| AS5 Hybrid Plus | 15" | Hybrid | Tallest Amerisleep mattress; topper-like feel |
The AS4 is listed above for reference but is no longer sold by Amerisleep. Buyers searching for a medium-plush all-foam option are directed to the AS3 Hybrid, which occupies the same position in the lineup. For an in-depth look at the full range, the AS3 review covers the all-foam and hybrid variants side by side. The AS5 review goes deep on the Hybrid Plus model for buyers considering the 15-inch profile.
Shop Amerisleep AS3 — 12" all-foam or 13" hybrid, Queen from $1,449 (frequent sales 20-30% off).
Room Requirements by Mattress Size
A mattress fits in any room larger than its footprint, but comfortable bedroom function requires clearance for walking, furniture, and door swing. The figures below represent practical minimums, not absolute minimums. A mattress that technically fits in a 9-foot room is not the same as a mattress that fits livably.
| Size | Minimum room size | Ideal room size | Notes |
|---|---|---|---|
| Twin | 7′ × 10′ | 9′ × 10′ | Leaves 2′+ clearance on all sides |
| Twin XL | 7′ × 10′ | 9′ × 11′ | Same width, 5" longer than Twin |
| Full | 9′ × 10′ | 10′ × 12′ | Minimum tight; ideal leaves room for dresser |
| Queen | 10′ × 11′ | 12′ × 12′ | Most master bedrooms qualify; 12′×12′ is comfortable |
| King | 12′ × 14′ | 13′ × 15′ | Requires larger room; check dresser clearance |
| California King | 12′ × 14′ | 13′ × 15′ | 4" narrower than King, 4" longer; fits long narrow rooms |
California King vs King is frequently misunderstood. Both need roughly the same room footprint, but Cal King trades 4 inches of width (72" vs 76") for 4 inches of extra length (84" vs 80"). In rooms that are wider than they are long, King is the better fit. In rooms that are longer than they are wide — or for sleepers over 6′2" — Cal King uses the space more efficiently. See how Amerisleep's sizing compares to another major brand in the Saatva mattress sizes guide.
Weight Per Size: Amerisleep Mattresses
Mattress weight affects delivery logistics, setup, and how often you can rotate or reposition the bed. Amerisleep delivers all mattresses compressed and rolled in a box. The figures below are based on the AS3 all-foam model (Queen baseline = 75 lbs) and extrapolated across sizes. Hybrid models run approximately 15–20% heavier than the all-foam equivalent due to the steel coil layer.
| Size | AS3 All-foam weight (approx.) | Notes |
|---|---|---|
| Twin | ~35 lbs | Manageable solo; easy to move |
| Twin XL | ~45 lbs | Slightly heavier than Twin |
| Full | ~55 lbs | One person can manage with care |
| Queen | ~75 lbs | Recommended: two people to position |
| King | ~110 lbs | Two people required; heavy to rotate |
| California King | ~105 lbs | Similar to King; two people required |
Which Size for Which Sleeper
The right Amerisleep size depends on three variables: how many people are sleeping, how tall those people are, and how much room the bedroom provides. The grid below maps common sleeper profiles to the correct size.
Solo sleeper, standard height
Best size: Full or Queen
A Full (54"×75") gives a single adult plenty of width without using Queen-level room space. If the bedroom comfortably holds a Queen, that is the better long-term choice if a partner is possible.
Solo sleeper, 6′+ tall
Best size: Twin XL or Queen
At 80" length, Twin XL and Queen give a 6′2" sleeper (74") a 6-inch buffer from the foot. A standard Twin or Full at 75" would put tall sleepers at the edge.
Couple, average height
Best size: Queen
At 60" wide, a Queen gives each partner 30 inches of sleeping space — functional for couples who do not need maximum separation. Works in most master bedrooms (10′×11′ minimum).
Couple, one or both tall or large
Best size: King
King at 76" wide gives each partner 38 inches — the equivalent of a Twin each. Requires a 12′×14′ room minimum. For tall couples, King at 80" length covers most heights.
Couple, one or both over 6′2"
Best size: California King
Cal King's 84-inch length covers sleepers up to 6′8" with margin. Trade-off: 4 inches narrower than King (72" vs 76"). Best when at least one partner genuinely needs the extra length.
Couple with adjustable base
Best size: Split King
Split King = two Twin XLs (38"×80" each) on a dual-zone adjustable base. Each partner controls head and foot elevation independently. Requires a Split King-compatible base.
Child or teenager
Best size: Twin or Twin XL
Twin (38"×75") works for children through early teen years. If the child is likely to grow past 6 feet, move directly to Twin XL. Both fit in a 7′×10′ minimum room.
Guest room
Best size: Queen or Full
Queen handles any guest configuration — solo, couple, parent with child. Full works if room size is the constraint. Both are readily available in Amerisleep's current lineup.
Split King: What It Is and Who Needs It
Amerisleep's Split King is not a single mattress — it is two Twin XL mattresses (each 38"×80") sold as a pair and designed to sit side by side on a dual-zone adjustable base. Total footprint is 76"×80", identical to a standard King.
The reason couples choose Split King over King: each side of the bed operates independently on an adjustable base. One partner can elevate the head of their mattress while the other sleeps flat. Split King also means each partner can choose a different Amerisleep model — AS3 on one side, AS5 on the other — with no compromise needed on firmness.
Split King requires King-size bedding, not Twin XL. Use a King flat sheet and comforter to cover both sides; the top bedding spans the full 76-inch width. Some couples also add a split King-specific mattress topper connector strap to reduce the center gap between the two halves.
Bedding Compatibility
One of Amerisleep's practical advantages: all sizes fit standard US bedding without any specialty sizing. No brand-specific sheets, specialty depth fitted sheets, or custom comforters are required unless you choose the high-profile AS5 Hybrid Plus (15 inches) on a tall adjustable base, which may push total mattress height high enough to require deep-pocket sheets.
| Amerisleep size | Sheet size needed | Deep-pocket needed? |
|---|---|---|
| Twin | Twin sheets | Not typically |
| Twin XL | Twin XL sheets | Not typically |
| Full | Full sheets | Not typically |
| Queen | Queen sheets | Not for AS1–AS3; check for AS5 |
| King | King sheets | Recommended for AS5 Hybrid Plus (15") |
| California King | Cal King sheets | Recommended for AS5 Hybrid Plus (15") |
| Split King | King flat + 2×Twin XL fitted | Check for AS5 models |
Standard fitted sheets fit mattresses up to about 14 inches deep. The AS5 Hybrid Plus at 15 inches sits at the edge of that range. Deep-pocket fitted sheets (18–21" pocket depth) ensure a secure fit without the sheet pulling off at corners. All other Amerisleep models (10–14") work fine with standard sheets.
Frequently Asked Questions
What are the dimensions of an Amerisleep Queen mattress?
An Amerisleep Queen mattress measures 60 inches wide by 80 inches long. Height varies by model: the AS3 all-foam is 12 inches tall, the AS3 Hybrid is 13 inches, and the AS5 Hybrid Plus is 15 inches. The Queen footprint is standard across all Amerisleep models and fits any Queen bed frame without modification.
How tall is the Amerisleep AS3?
The Amerisleep AS3 comes in two variants with different heights. The AS3 all-foam is 12 inches tall. The AS3 Hybrid is 13 inches tall, one inch taller due to the pocketed coil support layer replacing the base foam. Both are available in all standard sizes from Twin to California King.
What is the difference between a King and California King at Amerisleep?
King (76"×80") is 4 inches wider but 4 inches shorter than California King (72"×84"). Both need roughly the same room footprint (12′×14′ minimum). Choose King if maximum width matters for couples. Choose California King if one or both sleepers are over 6 feet 2 inches and need the extra 4 inches of length. Bedding is not interchangeable — King and Cal King require different sheets.
Does Amerisleep make a Split King?
Yes. Amerisleep's Split King is two Twin XL mattresses (38"×80" each) placed side by side on a dual-zone adjustable base. Total footprint equals a standard King (76"×80"). Couples can choose different Amerisleep models for each half — different firmness levels on each side. A Split King-compatible adjustable base is required; a standard King base will not work with this configuration.
How does Amerisleep AS5 height compare to other models?
The AS5 Hybrid is 14 inches tall and the AS5 Hybrid Plus is 15 inches, making them the tallest mattresses in the Amerisleep lineup. By comparison, the AS1 is 10 inches, AS2 and AS3 all-foam are 12 inches, and AS3 Hybrid is 13 inches. The 5-inch height difference between AS1 and AS5 Hybrid Plus is meaningful for bed height, sheet depth requirements, and the overall feel of getting in and out of bed.
What room size do I need for a Queen Amerisleep mattress?
A Queen Amerisleep mattress (60"×80") requires a minimum room size of approximately 10 feet by 11 feet for basic clearance on all sides. An ideal room size is 12 feet by 12 feet, which provides comfortable walking space around the bed and room for nightstands without the room feeling crowded. Always account for the bed frame dimensions, which add 2–4 inches to the mattress footprint.
How much does an Amerisleep Queen mattress weigh?
An Amerisleep AS3 all-foam Queen weighs approximately 75 pounds. The AS3 Hybrid Queen weighs roughly 90 pounds due to the steel coil support layer. A King AS5 Hybrid Plus approaches 130 pounds. For any size at Queen or above, two people are recommended for unboxing and positioning. Amerisleep delivers all mattresses compressed in a roll-pack box; setup requires expanding the mattress in the room where it will be used.
Do Amerisleep mattresses fit standard bed frames and sheets?
Yes. All Amerisleep mattress sizes conform to ISPA standard US dimensions, so they fit any standard bed frame, platform base, or adjustable base in the corresponding size. Standard fitted sheets work for AS1 through AS5 Hybrid (10–14 inches). The AS5 Hybrid Plus at 15 inches may benefit from deep-pocket fitted sheets (18–21 inch pocket depth) to avoid corner pull-off.
Is a Twin XL long enough for a tall person?
A Twin XL is 38 inches wide and 80 inches long. A sleeper who is 6 feet 2 inches tall (74 inches) has 6 inches of clearance from their feet to the end of the mattress on a Twin XL. That is sufficient for most sleepers in the 6 feet to 6 feet 4 inch range. Sleepers over 6 feet 5 inches should consider a California King (84 inches) for comfortable clearance.
Verdict
Amerisleep covers every standard US size without any specialty sizing requirements.
For the majority of buyers, the Queen AS3 covers the use case: it fits any standard master bedroom with 10′×11′ or more of space, works with standard sheets, and ships in a roll-pack box that fits through any standard doorway. The 12-inch height is tall enough to feel premium without creating fitted sheet or bed height issues.
Taller sleepers should move to Twin XL, Queen, King, or California King — never a standard Twin or Full, which max out at 75 inches. The California King's 84-inch length covers essentially all sleepers; the trade-off is 4 fewer inches of width, which only matters for couples who both need that space.
The AS5 Hybrid Plus at 15 inches is the one configuration where you should verify sheet depth, base compatibility, and total bed height before ordering. At 15 inches on a 6-inch adjustable base, the sleeping surface sits roughly 21 inches from the floor — comfortable for most adults but worth confirming against your specific frame and room setup.
If you are still deciding on the model alongside the size, the AS3 review and AS5 review compare the all-foam and hybrid builds in detail. The full Amerisleep model review covers all AS models with firmness, support, and durability data.
Amerisleep — All Sizes, All Models, Free Shipping
Twin through Split King • 100-night trial • 20-year warranty • Ships compressed in a box