Can a king mattress fit through a 30-inch door?

Yes, if you stand it on its side. A king mattress on its side is 76" tall × 80" long × 10–14" thick. The 10–14" thickness easily clears a 30" door. The 76" height clears the 80" header. See the detailed 30-inch door analysis .

What if my king mattress is too thick?

Foam mattresses can be compressed by 2–3 inches with ratchet straps. For rigid innerspring models, remove the door (adds 1.5–2") and remove door casing trim if needed (adds another 0.75–1.5").

Is it easier to move a king through a door or a window?

A door is almost always easier. Stand the mattress on its side and slide it through. Windows require lifting height, removal of screens/sashes, and risk of damage. Only use a window if the doorway path has an impassable turn.

ItemFits

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Home / Doorway & Entry Clearance

Will a King Mattress Fit Through a Door?

Enter your doorway measurements to see if a king mattress will clear the frame — and what to do if it won't.

Trusted across thousands of fit checks · updated daily

Scan items/space

Language: Português

Voice input

400 questions answered

Room Preview·Visual Results·Simulations

Whether it fits depends on measurements most people get wrong.

Key Measurement

Mattress thickness (10–14") vs. door clear width (30–32")

Standard Dimensions

Item: King mattress: 76" W × 80" L × 10–14" 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

10,000+ fit checks run·Last check: a few minutes ago

“Checked my mattress before ordering. Tight fit, but it worked with the door removed.” — Online shopper

Measure smart

What to measure.

Four numbers decide nearly every fit check. Get these right and the rest follows.

01Mattress thickness — innerspring kings are 10–14" thick, which becomes the critical dimension when the mattress is bent or angled through the door
02Doorway clear opening — measure between the inside edges of the frame, not the door slab size
03Mattress flexibility — all-foam mattresses bend significantly, while innerspring and hybrid models are nearly rigid
04Hallway width beyond the door — you need room to angle the mattress out once the leading edge is through

Don't make these

Common mistakes.

Most “it didn't fit” stories trace back to one of these oversights.

⚠Assuming a king mattress (76" wide) can't fit through a 32" door — when stood on its side, the 10–14" thickness is the limiting dimension, not the 76" width
⚠Trying to bend an innerspring king mattress — innerspring and hybrid models are rigid and can be permanently damaged by bending
⚠Not removing the door first — the door and hinges consume 1.5–2" of the clear opening
⚠Forgetting to check the 80" height constraint — a king mattress on its side is 76" tall, which fits under a standard 80" door header with only 4" to spare

Frequently asked

Questions we keep getting.

Can a king mattress fit through a 30-inch door?
Yes, if you stand it on its side. A king mattress on its side is 76" tall × 80" long × 10–14" thick. The 10–14" thickness easily clears a 30" door. The 76" height clears the 80" header. See the detailed 30-inch door analysis.
01
What if my king mattress is too thick?
Foam mattresses can be compressed by 2–3 inches with ratchet straps. For rigid innerspring models, remove the door (adds 1.5–2") and remove door casing trim if needed (adds another 0.75–1.5").
02
Is it easier to move a king through a door or a window?
A door is almost always easier. Stand the mattress on its side and slide it through. Windows require lifting height, removal of screens/sashes, and risk of damage. Only use a window if the doorway path has an impassable turn.
03

Related fit checks.

Will a Washer Fit Through the Hallway?Check if your washing machine will fit through a hallway. Account for dolly height, hallway width, and corner turns before appliance delivery.

Unlock stair simulation, AR visualization, and more.

Will it fit? Know before you buy.

Open the calculator and check any item against any space.

Open the fit calculator

ItemFits

About•FAQ•Features•Pricing

Home / Doorway & Entry Clearance

Will a King Mattress Fit Through a Door?

Enter your doorway measurements to see if a king mattress will clear the frame — and what to do if it won't.

Trusted across thousands of fit checks · updated daily

Scan items/space

Language: Português

Voice input

400 questions answered

Room Preview·Visual Results·Simulations

Whether it fits depends on measurements most people get wrong.

Key Measurement

Mattress thickness (10–14") vs. door clear width (30–32")

Standard Dimensions

Item: King mattress: 76" W × 80" L × 10–14" 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

10,000+ fit checks run·Last check: a few minutes ago

“Checked my mattress before ordering. Tight fit, but it worked with the door removed.” — Online shopper

Measure smart

What to measure.

Four numbers decide nearly every fit check. Get these right and the rest follows.

01Mattress thickness — innerspring kings are 10–14" thick, which becomes the critical dimension when the mattress is bent or angled through the door
02Doorway clear opening — measure between the inside edges of the frame, not the door slab size
03Mattress flexibility — all-foam mattresses bend significantly, while innerspring and hybrid models are nearly rigid
04Hallway width beyond the door — you need room to angle the mattress out once the leading edge is through

Don't make these

Common mistakes.

Most “it didn't fit” stories trace back to one of these oversights.

⚠Assuming a king mattress (76" wide) can't fit through a 32" door — when stood on its side, the 10–14" thickness is the limiting dimension, not the 76" width
⚠Trying to bend an innerspring king mattress — innerspring and hybrid models are rigid and can be permanently damaged by bending
⚠Not removing the door first — the door and hinges consume 1.5–2" of the clear opening
⚠Forgetting to check the 80" height constraint — a king mattress on its side is 76" tall, which fits under a standard 80" door header with only 4" to spare

Frequently asked

Questions we keep getting.

Can a king mattress fit through a 30-inch door?
Yes, if you stand it on its side. A king mattress on its side is 76" tall × 80" long × 10–14" thick. The 10–14" thickness easily clears a 30" door. The 76" height clears the 80" header. See the detailed 30-inch door analysis.
01
What if my king mattress is too thick?
Foam mattresses can be compressed by 2–3 inches with ratchet straps. For rigid innerspring models, remove the door (adds 1.5–2") and remove door casing trim if needed (adds another 0.75–1.5").
02
Is it easier to move a king through a door or a window?
A door is almost always easier. Stand the mattress on its side and slide it through. Windows require lifting height, removal of screens/sashes, and risk of damage. Only use a window if the doorway path has an impassable turn.
03

Related fit checks.

Will a Washer Fit Through the Hallway?Check if your washing machine will fit through a hallway. Account for dolly height, hallway width, and corner turns before appliance delivery.

Unlock stair simulation, AR visualization, and more.

Will it fit? Know before you buy.

Open the calculator and check any item against any space.

Open the fit calculator