.sofa-calculator-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
max-width: 800px;
margin: 0 auto;
padding: 20px;
border: 1px solid #e0e0e0;
border-radius: 8px;
background-color: #f9f9f9;
}
.calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 25px;
}
@media (max-width: 768px) {
.calc-grid { grid-template-columns: 1fr; }
}
.calc-section h3 {
margin-top: 0;
color: #333;
border-bottom: 2px solid #0073aa;
padding-bottom: 10px;
}
.input-group {
margin-bottom: 15px;
}
.input-group label {
display: block;
margin-bottom: 5px;
font-weight: 600;
color: #555;
}
.input-group input {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box; /* Crucial for padding not affecting width */
}
.calc-button {
width: 100%;
padding: 15px;
background-color: #0073aa;
color: white;
border: none;
border-radius: 4px;
font-size: 18px;
font-weight: bold;
cursor: pointer;
transition: background-color 0.3s;
}
.calc-button:hover {
background-color: #005a87;
}
#sofaResult {
margin-top: 25px;
padding: 20px;
border-radius: 6px;
display: none; /* Hidden by default */
}
.result-success { background-color: #d4edda; border: 1px solid #c3e6cb; color: #155724; }
.result-warning { background-color: #fff3cd; border: 1px solid #ffeeba; color: #856404; }
.result-failure { background-color: #f8d7da; border: 1px solid #f5c6cb; color: #721c24; }
.result-header { font-size: 24px; font-weight: bold; margin-bottom: 10px; }
.metric-box { background: rgba(255,255,255,0.5); padding: 10px; margin-top: 10px; border-radius: 4px; }
function calculateSofaFit() {
var sL = parseFloat(document.getElementById('sofaLength').value);
var sD = parseFloat(document.getElementById('sofaDepth').value);
var sH = parseFloat(document.getElementById('sofaHeight').value);
var dW = parseFloat(document.getElementById('doorWidth').value);
var dH = parseFloat(document.getElementById('doorHeight').value);
var hW = parseFloat(document.getElementById('hallWidth').value);
var resultDiv = document.getElementById('sofaResult');
resultDiv.style.display = 'block';
if (isNaN(sL) || isNaN(sD) || isNaN(sH) || isNaN(dW) || isNaN(dH)) {
resultDiv.className = 'result-failure';
resultDiv.innerHTML = '
1. Sofa Dimensions (Inches)
The longest measurement from arm to arm.
From front of seat to back of frame.
Floor to highest point (try removing legs/cushions first!).
2. Space Dimensions (Inches)
The narrowest point inside the door frame.
Crucial if there is a turn immediately after the door.
Please enter all required dimensions.
';
return;
}
// Treat empty hallway width as infinite (no constraint)
if (isNaN(hW) || hW === 0) {
hW = 9999;
}
// Calculations
var sofaMinDim = Math.min(sD, sH);
// Diagonal height determines if it can stand up under the door frame
var diagonalHeight = Math.sqrt((sD * sD) + (sH * sH));
var fitStatus = "";
var message = "";
var details = "";
// GATEKEEPER: The absolute smallest dimension of the sofa MUST be smaller than the door width.
if (sofaMinDim >= dW) {
fitStatus = "failure";
message = "NO. It will not fit.";
details = "The sofa's smallest dimension (" + sofaMinDim.toFixed(1) + "\") is wider than the door opening (" + dW + "\"). Even tilted, it won't pass the threshold.";
} else {
// It passes the basic width check. Now we check orientation and corners.
var straightFit = false;
var standUpFit = false;
var cornerIssue = false;
// Check 1: Straight horizontal carry (easiest)
if (sD < dW && sH < dH) { straightFit = true; }
// Check 2: Tilted on side carry
else if (sH < dW && sD < dH) { straightFit = true; }
// Check 3: Stand-up carry (vertical "elevator" style)
// Requires depth < door width AND length < door height
if (sD < dW && sL < dH) { standUpFit = true; }
// Check 4: The Hallway Turn Constraint
// If the hallway is narrower than the sofa length, we have a turning issue.
if (hW = dH) {
cornerIssue = true;
details = "It fits through the door frame straight on, BUT the hallway is too tight to turn without standing the sofa up. Unfortunately, the sofa's diagonal height ("+diagonalHeight.toFixed(1)+"\") is too tall to stand up under the door frame ("+dH+"\"). It will likely get stuck in the turn.";
}
// Also, the depth must be less than the hallway width to complete the turn.
else if (sD >= hW) {
cornerIssue = true;
details = "It passes the door, but the hallway is too narrow ("+hW+"\") for the sofa depth ("+sD+"\") to make the turn.";
}
}
// Determine final result based on checks
if (cornerIssue) {
fitStatus = "warning";
message = "PROBABLY NOT. The corner is the problem.";
// details already set above
} else if (straightFit) {
fitStatus = "success";
message = "YES. It should fit easily.";
details = "You should be able to carry it straight through horizontally, either upright or tilted on its side, provided there are no tight corners immediately.";
} else if (standUpFit) {
fitStatus = "success";
message = "YES, but requires maneuvering.";
details = "It will not fit horizontally. You will need to stand the sofa vertically on its end to pass it through the doorway.";
} else {
// It passed the gatekeeper (minDim < dW) but failed specific orientation checks (e.g. sofa is very long AND very tall)
fitStatus = "failure";
message = "NO. It is too large.";
details = "While the smallest dimension fits the width, the combination of length and height makes it impossible to pass through the door height in any orientation.";
}
}
resultDiv.className = 'result-' + fitStatus;
resultDiv.innerHTML = '' + message + '
' +
" + details + " +
'Critical Metrics:' +
'Sofa Diagonal Height: ' + diagonalHeight.toFixed(1) + '"' +
'Sofa Smallest Dimension: ' + sofaMinDim.toFixed(1) + '"
';
}
The Ultimate Guide to Measuring: Will My Sofa Fit?
Buying a new sofa is exciting, but the dread of the delivery truck arriving only to find the furniture won't fit through the door is real. This calculator uses the physical dimensions of your sofa and your entryway to determine the likelihood of a successful delivery. It considers not just straight-through passage, but also the dreaded "pivot" required around tight hallway corners.
How to Measure Your Sofa Correctly
Accuracy is paramount. Don't rely on the manufacturer's rounded numbers; measure the actual piece if possible. If buying online, hunt down the detailed spec sheet.
- Length (L): The longest measurement of the sofa from the furthest point on the left arm to the furthest point on the right arm.
- Depth (D): The measurement from the very front edge of the seat or arms to the furthest point on the back frame. *Pro Tip: If the legs are removable, measure the depth without them if they protrude.*
- Height (H): The measurement from the floor to the highest point on the back of the sofa. *Crucial: If the back cushions are squishy or removable, measure to the top of the solid frame. Always measure height with removable legs taken OFF.*
How to Measure Your Space
Your entryway has three critical dimensions that dictate what can pass through it.
- Door Width (DW): Open the door fully. Measure the narrowest opening between the doorstops (the molding inside the frame that the door closes against). Do not just measure the door itself.
- Door Height (DH): Measure from the floor threshold to the bottom of the top doorstop frame.
- Hallway Width (HW): If there is a wall immediately opposite the door, or if you must turn 90 degrees into a hallway right after entering, measure the width of that hallway. This is the most common reason sofas get stuck—they fit through the door but cannot make the turn.
Understanding the Results and the "Pivot"
The most common point of failure isn't the door width, it's the combination of a narrow door, a low ceiling, and a tight hallway turn. This is known as the "moving sofa problem."
If your sofa is longer than your hallway is wide, you cannot just carry it in horizontally and turn. Movers must stand the sofa vertically on its end (like a tall cabinet), push it through the door, and pivot it around the corner while it is standing up.
For this maneuver to work, two things must happen:
- The sofa's depth must be narrower than the door width.
- The sofa's "Diagonal Height" (the distance from the bottom-front leg to the top-back of the frame) must be shorter than the door opening height, or you won't be able to stand it up once it's partly through the frame.
This calculator runs these geometric checks to give you a realistic assessment of whether that new sectional is making it into your living room.