Comforter sizing is about the drop — how far the fabric hangs past the mattress — not just the mattress label. Here's how to land it first time.
Start with your mattress
| Mattress | Standard size |
|---|---|
| Twin | 38" × 75" |
| Twin XL | 38" × 80" |
| Full | 54" × 75" |
| Queen | 60" × 80" |
| King | 76" × 80" |
| California King | 72" × 84" |
These are standard US mattress dimensions. Measure your mattress depth too — anything over 14" counts as deep.
Then pick your fit
- Standard fit — matches your mattress label. A normal drop on all sides.
- Size up one — choose this if your mattress is deeper than 14", if you have a topper, or if you simply like more fabric hanging down. Two people who pull covers also benefit.
- Square Cut — cut to hang evenly on all four sides rather than longer at the foot. Best on beds seen from both sides, or where the bed sits away from a wall.
- California King (oversized) — extra length for taller bed frames and deep mattresses, so the drop doesn't stop short.
Quick answers
Between two sizes? Go up. A comforter that's slightly generous looks intentional; one that's slightly short never does.
Adjustable bed? Size up — the comforter needs slack to move with the frame.
Shams come in Standard/Queen and King. Match the sham to your pillow, not to the comforter.
Still unsure? Ask us — tell us your mattress and depth and we'll tell you the size.