Will it fit up the stairs?
Enter your item and staircase details. Get a clear answer before you start lifting.
Your Item
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Corner Diagonal
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The critical measurement for turning the corner
Clearance
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Gap at the tightest point
People Needed
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Based on weight and floors
Tilt Angle
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Recommended angle for the turn
Corner Geometry
Weight Distribution Guide
Enter weight and number of floors to see positioning tips.
Measurements That Will Be Tight
- Enter item and staircase dimensions to see potential problem areas.
Getting Your Measurements Right
Measure the item at its widest points
Include any protruding legs, arms, or handles. Measure the longest dimension, the deepest, and the tallest. If the item can be disassembled (legs removed, doors taken off), measure it both assembled and disassembled. The disassembled dimensions are what you should plan around.
Find the narrowest point in your stairwell
This is usually where the handrail sticks out on the turn. Measure wall to wall at that point. Then subtract the handrail protrusion. If your building has thick baseboards, subtract those too. The usable width is what matters, not the architectural width.
Check the landing size
The landing is where you make the turn. If it is too small, you cannot rotate the item enough to clear the next flight. Measure both dimensions of the landing. A 36 by 36 inch landing is tight for anything over 72 inches long.
Do a hallway check first
Before you worry about stairs, make sure the item fits through your front door and any hallways leading to the stairwell. A standard interior door is 30 to 36 inches wide. If the item is wider than 30 inches, you will need to tilt it on its side just to get through the door.
Mistakes That Get People Stuck
Forgetting the handrail protrusion
Most people measure wall to wall and forget that the handrail eats into that space. A standard handrail protrudes 4 inches from the wall. On a 36-inch stair, that gives you only 32 inches of usable width. Always subtract the handrail.
Measuring the wrong dimension as length
The longest dimension of your item is not always the obvious one. A sofa with overhanging arms might be widest at the arms, not the seat. A bookshelf with a crown molding top might be tallest at the very edge. Measure every edge and use the largest number for each axis.
Ignoring the diagonal
An 80-inch item does not need 80 inches of width. When you tilt and rotate, the critical measurement is the diagonal across the item's cross section. A box that is 80 by 30 inches has a diagonal of about 85 inches. That diagonal must fit within the landing dimensions.
Not accounting for padding and wrap
Moving blankets, bubble wrap, and protective tape all add thickness. A moving blanket can add 0.5 inches per side. If your clearance is only 2 inches, wrapping the item might make it too big to fit. Plan for the wrapped dimensions, not the bare ones.
Assuming all turns are 90 degrees
Some buildings have 45-degree turns, U-turns, or even three-flight zigzags. The standard calculator assumes a single 90-degree turn per floor. If your building has a different layout, measure each turn separately and use the worst-case turn for your planning.
Trying to do it alone
Anything over 70 pounds should have at least two people. Over 150 pounds needs three or more. Going up stairs multiplies the effective weight because you are fighting gravity. Going down stairs requires control, which also needs extra hands. The planner tells you the minimum number of people. Add one more if anyone in the group is not comfortable with heavy lifting.
Special Situations
Spiral Staircases
Large furniture almost never fits on a spiral staircase. The turns are too tight and the treads are wedge-shaped. If your building has a spiral secondary staircase, check whether there is a wider main staircase or a freight elevator. If the spiral is your only option, the item needs to be fully disassembled and carried in pieces.
Split-Level Landings
Some buildings have a small landing halfway up each flight, with a half-turn. These are harder to plan for because you have two tight turns per floor instead of one. Use the custom landing fields to model the smaller landing. If the half-landing is under 30 inches in both dimensions, most large furniture will not make it.
Freight Elevators
If your building has a freight elevator, measure its interior dimensions and door opening. Freight elevators are often wider than the stairwell and can save you an entire afternoon of struggle. The same diagonal logic applies to the elevator door opening.
Removing the Door from Its Hinges
If the item is close to fitting through a door frame, removing the door from its hinges can buy you an extra 1.5 to 2 inches of clearance. This is often the difference between a fit and a no-fit. Keep a screwdriver and a friend to hold the item while you remove the door.
Questions People Ask
- What if the planner says it fits but it is really tight?
- Clearance under 2 inches means it technically fits but leaves almost no room for error. Add padding or wrap, which takes up space. When clearance is under 3 inches, seriously consider disassembling the item or hiring movers with experience in tight spaces.
- Can I use this for moving things down stairs?
- Yes. The geometry is the same in both directions. Moving down is harder to control because gravity pulls the item forward. The planner recommends an extra helper for downward moves over 3 floors.
- What about door frames and hallways before the stairs?
- Door frames are a separate check. A standard interior door is 30 to 36 inches wide. If your item is wider than 30 inches, it will not fit through without tilting. Hallway turns work like stair corners. Measure the hallway width and use the same diagonal logic.
- How accurate is this planner?
- The math is accurate for standard 90-degree turns with flat landings. Real-world results depend on your actual measurements, the skill of your helpers, and whether the item has any flexible parts. Always add a safety margin of at least 2 inches beyond what the calculator says.
- Should I hire movers instead?
- If the planner gives a no-go, hire professionals. If it gives a go but clearance is under 3 inches, or if the item is over 150 pounds, or if you have more than 4 floors, professional movers with experience in walkup buildings will save you time, injury risk, and damaged walls.