Oversized Bed Sheet Size Chart: Finally, a Simple Guide to Sheets That Actually Fit
Buying an oversized bed feels exciting… until it’s time to shop for sheets.
You finally upgrade to a beautiful Alaskan King, Texas King, or Family XL bed, only to realize that regular store-bought sheets barely fit — or worse, do not fit at all. Corners keep slipping off, fitted sheets feel too tight, and finding the right size suddenly becomes way more complicated than it should be.
If that sounds familiar, you are not alone.
Most bedding brands only focus on standard mattress sizes, which leaves oversized bed owners struggling to find sheets that truly fit comfortably. That is exactly why we created this guide — to make oversized bed sheet sizing simple, clear, and stress-free.
Whether you own an Alaskan King, Wyoming King, Family Bed, or another oversized mattress, this size chart will help you find the right sheets without the guesswork.
Oversized Bed Sheet Size Chart
| Oversized Mattress Size | Mattress Dimensions | Recommended Sheet Size |
|---|---|---|
| Alaskan King Size | 108" x 108" | Alaskan King Sheets |
| Short Alaskan / Florida King | 108" x 84" | Florida King Sheets |
| Texas King Size | 80" x 98" | Texas King Sheets |
| Wyoming / Emperor King | 84" x 84" | Wyoming King Sheets |
| Vermont / Alberta King | 96" x 96" | Oversized King Sheets |
| Family King Size | 144" x 80" | Family Bed Sheets |
| Family XL Size | 144" x 84" | Family XL Sheets |
Why Oversized Beds Need Custom Sheets
Oversized mattresses are amazing for comfort, but they come with one big challenge: standard sheets are not made for them.
And if you have ever tried forcing regular king sheets onto an oversized mattress, you already know how frustrating it can be.
You might notice:
- Corners popping off overnight
- Loose fabric bunching up
- Sheets sliding around constantly
- Tight fitted sheets that barely stretch
- Incorrect pocket depth
The truth is, even a few extra inches can completely change how a fitted sheet performs.
That is why oversized mattresses usually need custom-made sheets designed specifically for their dimensions and depth.
Alaskan King Bed Sheets
The Alaskan King is one of the largest mattress sizes available, measuring 108 inches by 108 inches.
It is huge — and honestly, that is what people love about it.
Families can comfortably co-sleep, couples get tons of personal space, and tall sleepers no longer feel cramped.
But finding sheets for an Alaskan King is not easy because very few stores carry this size.
Custom Alaskan King sheets are usually the best option because they are made to fit the exact width, length, and pocket depth of your mattress.
Short Alaskan / Florida King Sheets
The Short Alaskan, also called the Florida King, measures 108" x 84".
This mattress gives you the extra width of an oversized bed without taking up as much space lengthwise.
It is a great choice for:
- Families
- Wide room layouts
- Couples who love extra sleeping space
Because this size is uncommon, custom sheets usually provide the best fit and stay securely in place much better than oversized standard king sheets.
Texas King Bed Sheets
Texas King mattresses measure 80" x 98", making them longer than a standard king bed.
If you are tall, this size can make a huge difference in sleep comfort.
No more feet hanging off the edge.
Texas King beds are especially popular among:
- Tall sleepers
- Athletes
- Couples who want extra legroom
The key here is getting fitted sheets with the correct dimensions and deep enough pockets so the corners stay secure all night.
Wyoming / Emperor King Sheets
Wyoming King, sometimes called Emperor King, measures 84" x 84".
It sits right between a standard king and larger oversized mattresses, giving couples extra personal space without needing an enormous bedroom.
Many people choose this size because it feels more luxurious and spacious while still fitting comfortably in most homes.
Since it is not commonly sold in retail stores, custom Wyoming King sheets are usually the easiest way to get a proper fit.
Vermont / Alberta King Size Sheets
The Vermont or Alberta King measures 96" x 96".
This size is perfect for people who want something larger than a standard king but not quite as massive as an Alaskan King.
It creates a roomy, luxury feel that many homeowners love for master bedrooms.
Because these dimensions are uncommon, custom bed sheets are often the only way to get a clean, secure fit.
Shop custom oversized king sheets designed specifically for Vermont and Alberta King mattress sizes.
Family King and Family XL Bed Sheets
Family beds are becoming more popular than ever, especially for parents who co-sleep with children.
These beds are designed to give everyone enough space to sleep comfortably together.
Family King Size
- 144" x 80"
Family XL Size
- 144" x 84"
That is a lot of mattress to cover — which is exactly why standard bedding does not work well here.
Custom Family Bed sheets help prevent:
- Sheets slipping off
- Fabric bunching in the middle
- Uneven fitting
- Loose corners
And honestly, when multiple people are sharing a bed, having properly fitted sheets matters even more.
How to Measure Your Oversized Mattress Properly
Before ordering sheets, always measure your mattress yourself — even if you already know the mattress name.
Some oversized beds vary slightly depending on the manufacturer.
Measure:
- Width
- Length
- Mattress thickness
- Pillow-top height
- Mattress topper thickness
This helps ensure your fitted sheet fits smoothly without feeling too loose or too tight.
Do You Need Deep Pocket Sheets?
In many cases, yes.
Oversized mattresses are often thicker than standard mattresses, especially when toppers are added.
Here is a quick guide:
| Mattress Height | Recommended Pocket Depth |
|---|---|
| 8–12 inches | Standard Pocket |
| 13–16 inches | Deep Pocket |
| 17–22 inches | Extra Deep Pocket |
If your fitted sheet constantly slips off, pocket depth is usually the reason.
Why Custom Bed Sheets Make Such a Difference
The biggest difference between regular sheets and custom sheets is simple: fit.
When sheets are made specifically for your mattress size, everything feels better.
You get:
- Smooth corners
- Better hold
- Less bunching
- Cleaner appearance
- More comfortable sleep
At SGI Bedding, we create custom sheets for:
- Oversized mattresses
- Split mattresses
- RV beds
- Adjustable beds
- Round mattresses
- Custom-shaped beds
So no matter how unique your mattress is, you can finally get sheets that fit the way they are supposed to.
Final Thoughts
Oversized beds are meant to feel comfortable, luxurious, and relaxing — but poorly fitting sheets can quickly ruin that experience.
The good news is that once you know your mattress dimensions and choose properly fitted sheets, everything becomes much easier.
Whether you own an Alaskan King, Texas King, Wyoming King, or a Family XL bed, the right custom sheets can completely change the way your bed looks and feels.
Because at the end of the day, you should not have to struggle just to find sheets that fit your bed properly.
