A fitted sheet that doesn't fit is one of the most common frustrations with buying bedding online. The fix is simple: measure before you buy, not after.
What You'll Need
- A tape measure
- Your mattress (with the topper on, if you use one)
- 5 minutes
Step 1: Measure the Length and Width
Measure your mattress from edge to edge, in both directions, at its widest points. Note these two numbers down in inches or centimeters, whichever your preferred store uses.
Step 2: Measure the Depth (Most Skipped Step)
This is where most people go wrong. Measure straight down from the top of the mattress to the floor of the bed frame, or simply the height of the mattress itself if it sits on a solid base.
Important: If you use a mattress topper, mattress protector, or pillow-top mattress, add that extra height to your measurement. This total number is what determines your pocket depth need, not just the base mattress height.
Step 3: Match to Pocket Depth Categories
Fitted sheets are generally sold in these depth ranges:
| Mattress Depth | Sheet Type Needed |
|---|---|
| Up to 9 inches | Standard pocket |
| 9-14 inches | Deep pocket |
| 14+ inches | Extra-deep pocket |
Step 4: Check the Size Label Against Exact Dimensions
Don't rely on the label alone (Single, Double, Queen, King). These labels can vary slightly between brands and regions. Always cross-check the exact length and width listed in the product description against your own measurements.
Step 5: Account for Shrinkage
Cotton sheets typically shrink 3-5% after their first wash. If your mattress measurement falls right at the edge of two sizes, it's usually safer to size up slightly rather than buy an exact match.
Quick Checklist Before You Order
- ✅ Length and width measured at the widest point
- ✅ Depth measured including any topper or protector
- ✅ Pocket depth category identified
- ✅ Exact dimensions checked against the label, not just the size name
- ✅ Return policy confirmed in case the fit is still off
Even careful measuring can occasionally miss, so check the return and exchange policy on any bedsheet before you buy, just in case.
For everything else you need to know about buying bedsheets online, from fabric to weave, read the complete guide to buying bedsheets online.
Once you have your measurements ready, shop Aplito's bedsheet collection and check the dimensions of a specific product, such as the Slub Bedsheet in Beige, against your mattress. If you're unsure which size to choose, contact us before ordering.
For other home linen, visit the Aplito homepage.
