Bedding Size Guide: Find the Perfect Fit for Your Bed

Choosing the right bedding size is the first step to a perfectly made bed. Use this guide to match your sheets, duvet covers, comforters, and pillowcases to your mattress — with exact dimensions for every standard US size.

Keep in mind that dimensions can vary slightly between manufacturers. Always check the specific product dimensions before purchasing, especially if you have a thick mattress or use a mattress topper. For mattresses over 14" deep, look for deep pocket sheets (15"+ pocket depth).

US Bedding Size Chart

Twin

  • Mattress: 38 x 75 inches
  • Fitted Sheet: 39 x 75 inches (99 x 190 cm)
  • Flat Sheet: 66 x 96 inches (168 x 244 cm)
  • Comforter / Duvet: 68 x 86 inches (173 x 218 cm)
  • Pillowcase: 20 x 30 inches (51 x 76 cm)
  • Best for: Children’s beds, bunk beds, single sleepers

Twin XL

  • Mattress: 38 x 80 inches
  • Fitted Sheet: 39 x 80 inches (99 x 203 cm)
  • Flat Sheet: 66 x 102 inches (168 x 259 cm)
  • Comforter / Duvet: 68 x 92 inches (173 x 234 cm)
  • Pillowcase: 20 x 30 inches (51 x 76 cm)
  • Best for: College dorms, taller sleepers

Full / Double

  • Mattress: 54 x 75 inches
  • Fitted Sheet: 54 x 75 inches (137 x 190 cm)
  • Flat Sheet: 81 x 96 inches (206 x 244 cm)
  • Comforter / Duvet: 81 x 86 inches (206 x 218 cm)
  • Pillowcase: 20 x 30 inches (51 x 76 cm)
  • Best for: Single adults, smaller guest rooms

Queen

  • Mattress: 60 x 80 inches
  • Fitted Sheet: 60 x 80 inches (152 x 203 cm)
  • Flat Sheet: 90 x 102 inches (229 x 259 cm)
  • Comforter / Duvet: 90 x 94 inches (229 x 239 cm)
  • Pillowcase: 20 x 30 inches (51 x 76 cm)
  • Best for: Couples, master bedrooms — the most popular size

King

  • Mattress: 76 x 80 inches
  • Fitted Sheet: 76 x 80 inches (193 x 203 cm)
  • Flat Sheet: 108 x 102 inches (274 x 259 cm)
  • Comforter / Duvet: 108 x 94 inches (274 x 239 cm)
  • Pillowcase (King): 20 x 36 inches (51 x 91 cm)
  • Best for: Couples who want maximum space, large master bedrooms

California King

  • Mattress: 72 x 84 inches
  • Fitted Sheet: 72 x 84 inches (183 x 213 cm)
  • Flat Sheet: 108 x 102 inches (274 x 259 cm)
  • Comforter / Duvet: 104 x 98 inches (264 x 249 cm)
  • Pillowcase (King): 20 x 36 inches (51 x 91 cm)
  • Best for: Taller sleepers, long narrow bedrooms

Pillow Size Reference

  • Standard pillowcase: 20 x 26 inches — fits standard and queen pillows
  • Queen pillowcase: 20 x 30 inches — slightly longer for a neater look on queen beds
  • King pillowcase: 20 x 36 inches — for king and California king beds
  • Euro sham: 26 x 26 inches — decorative square pillow, common in duvet cover sets

Tips for Choosing the Right Size

  • Measure your mattress before buying — especially the depth. Modern mattresses often range from 10–20+ inches thick.
  • Deep pocket sheets are needed for mattresses over 14" deep. Look for 15–22" pocket depth depending on your mattress height.
  • Duvet covers should match your duvet insert size exactly. If you prefer a fuller, more generous drape, size up one level (e.g., use a King cover on a Queen insert).
  • California King and King are not interchangeable — Cal King is narrower and longer. Always check dimensions before purchasing.

Frequently Asked Questions

Q: Can I use Queen sheets on a Full mattress?
A: Yes — queen flat sheets work fine on a full bed with a slightly more generous drape. Queen fitted sheets may be too loose on a full mattress and could slip off. For the best fit, use full-size fitted sheets.

Q: What’s the difference between King and California King bedding?
A: King is wider (76" vs. 72") and California King is longer (84" vs. 80"). Their bedding is not interchangeable — always check which size your mattress is before purchasing sheets or a duvet cover.

Q: Do I need deep pocket sheets?
A: If your mattress (including any topper) is more than 14" deep, yes. Measure from the top surface straight down to the bottom edge of the mattress. Most modern memory foam and hybrid mattresses benefit from deep pocket sheets.

Shop Bedding by Size at Anna’s Linens

Ready to find the perfect fit? Browse our full Bedding & Home Decor Collections — featuring sheets, duvet cover sets, comforters, and pillowcases in all standard US sizes, curated for quality and comfort.