.freight-calc-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
max-width: 800px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e1e1e1;
border-radius: 8px;
background-color: #f9f9f9;
color: #333;
}
.freight-calc-container h2 {
margin-top: 0;
color: #004a99;
text-align: center;
}
.calc-row {
display: flex;
flex-wrap: wrap;
gap: 15px;
margin-bottom: 15px;
}
.calc-group {
flex: 1;
min-width: 150px;
}
.calc-group label {
display: block;
font-weight: bold;
margin-bottom: 5px;
font-size: 14px;
}
.calc-group input {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
.calc-btn {
width: 100%;
padding: 15px;
background-color: #004a99;
color: white;
border: none;
border-radius: 4px;
font-size: 16px;
font-weight: bold;
cursor: pointer;
transition: background-color 0.3s;
}
.calc-btn:hover {
background-color: #003366;
}
.freight-result {
margin-top: 25px;
padding: 20px;
background-color: #fff;
border-left: 5px solid #004a99;
border-radius: 4px;
display: none;
}
.freight-result h3 {
margin-top: 0;
color: #004a99;
}
.result-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 10px;
}
.result-item {
font-size: 15px;
}
.result-value {
font-weight: bold;
color: #d9534f;
}
.freight-article {
margin-top: 40px;
line-height: 1.6;
}
.freight-article h2 {
color: #004a99;
border-bottom: 2px solid #004a99;
padding-bottom: 10px;
}
.freight-table {
width: 100%;
border-collapse: collapse;
margin: 20px 0;
}
.freight-table th, .freight-table td {
border: 1px solid #ddd;
padding: 12px;
text-align: left;
}
.freight-table th {
background-color: #004a99;
color: white;
}
.freight-table tr:nth-child(even) {
background-color: #f2f2f2;
}
LTL Freight Class & Density Calculator
Calculate shipping density and estimate your NMFC freight class.
Weight (lbs)
Quantity (Pallets/Units)
Length (inches)
Width (inches)
Height (inches)
CALCULATE FREIGHT CLASS
Calculation Results
Total Weight: 0 lbs
Total Volume: 0 ft³
Density: 0 lb/ft³
Estimated Class: 0
*Note: This is an estimate. Actual NMFC classes also depend on stowability, handling, and liability.
Understanding Freight Class and Density
In the world of Less-Than-Truckload (LTL) shipping, the Freight Class is a standardized method used to categorize commodities for pricing. It is defined by the National Motor Freight Traffic Association (NMFTA) and published via the National Motor Freight Classification (NMFC).
How Density Affects Your Shipping Costs
Density is the primary factor used to determine freight class for most commodities. It is calculated by dividing the total weight of the shipment by the total cubic feet. Higher density items (like steel bolts) usually have a lower freight class, while low-density, bulky items (like ping-pong balls) have a higher freight class.
Standard Freight Class Density Table
Density (lbs per cubic foot)
Freight Class
Over 50
50
35 – 50
55
30 – 35
60
22.5 – 30
65
15 – 22.5
70
10.5 – 12
92.5
8 – 9
110
Less than 1
500
Example Calculation
Suppose you are shipping a standard pallet that weighs 400 lbs with dimensions of 48″L x 40″W x 48″H.
Step 1: Calculate Cubic Inches (48 x 40 x 48) = 92,160 cubic inches.Step 2: Convert to Cubic Feet (92,160 / 1,728) = 53.33 cubic feet.Step 3: Calculate Density (400 lbs / 53.33 ft³) = 7.50 lbs per cubic foot.Result: According to the NMFC scale, a density of 7.50 falls into Class 125 .
The Four Factors of Freight Class
While density is critical, carriers also consider three other factors:
Stowability: Can the item be stacked or is it oddly shaped?Handling: Does the item require special equipment or care?Liability: Is the item fragile, hazardous, or prone to theft?
function calculateFreightClass() {
var weight = parseFloat(document.getElementById("f_weight").value);
var qty = parseFloat(document.getElementById("f_qty").value);
var length = parseFloat(document.getElementById("f_length").value);
var width = parseFloat(document.getElementById("f_width").value);
var height = parseFloat(document.getElementById("f_height").value);
if (isNaN(weight) || isNaN(qty) || isNaN(length) || isNaN(width) || isNaN(height) || weight = 50) { freightClass = "50"; }
else if (density >= 35) { freightClass = "55"; }
else if (density >= 30) { freightClass = "60"; }
else if (density >= 22.5) { freightClass = "65"; }
else if (density >= 15) { freightClass = "70"; }
else if (density >= 13.5) { freightClass = "77.5"; }
else if (density >= 12) { freightClass = "85"; }
else if (density >= 10.5) { freightClass = "92.5"; }
else if (density >= 9) { freightClass = "100"; }
else if (density >= 8) { freightClass = "110"; }
else if (density >= 7) { freightClass = "125"; }
else if (density >= 6) { freightClass = "150"; }
else if (density >= 5) { freightClass = "175"; }
else if (density >= 4) { freightClass = "200"; }
else if (density >= 3) { freightClass = "250"; }
else if (density >= 2) { freightClass = "300"; }
else if (density >= 1) { freightClass = "400"; }
else { freightClass = "500"; }
document.getElementById("res_weight").innerText = totalWeight.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("res_volume").innerText = totalVolumeFeet.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("res_density").innerText = density.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("res_class").innerText = freightClass;
document.getElementById("freightResult").style.display = "block";
}