Last updated: March 2026
Enter your doorway measurements to verify a twin mattress will clear the frame.
Whether it fits depends on measurements most people get wrong.
Mattress thickness (8–12") vs. door clear width (24–36")
Item: Twin mattress: 38" W × 75" L × 8–12" thick
Space: Standard interior door: 80" H × 30–32" W clear opening
Actual clear openings are usually 1–2″ smaller than the labeled size.
Your exact dimensions probably aren't "standard." Small measurement errors cause big problems — 1 inch can be the difference between fitting and getting stuck.
Verdicts are calculated by comparing all 6 item orientations against the space dimensions using verified building code standards. See our methodology
Takes 10 seconds · No signup needed
1 inch can be the difference between fitting and getting stuck.
“Checked my mattress before ordering. Tight fit, but it worked with the door removed.” — Online shopper
Measurements verified by the ItemFits engineering team · Based on IRC R311.2, IBC Chapter 10, ADA 404 · Our methodology
Standard sizes say it works — but your measurements are what matter.
Virtually yes. A twin on its side is only 8–12" thick and 38" tall — this clears any standard door (24–36" wide, 80" tall). The only challenge is the 75" length in tight hallways.
A twin is 38" × 75". A twin XL is 38" × 80" (5 inches longer). Both fit through standard doors equally well, but the XL may be slightly harder on tight staircase landings.
Foam twin mattresses can be folded in half or rolled without damage. Innerspring twins should not be folded but are light enough (40–50 lbs) to carry on their side through any doorway.